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December 9, 2019 8:20 AM

Curious on Friday Squid Blogging: Squidfall Safety:

For sake of clarity, the linked article re. that self driving car pedestrian death above was dated 7. nov, so a month old article. I unfortunately overlooked the date for the article when following the link to the article on twitter earlier. :| (Those darn pinned tweets.)

December 9, 2019 7:12 AM

Petre Peter on Andy Ellis on Risk Assessment:

Every time I get sweaty palms, my amygdala's inerupts take priority over the neocortex.

December 9, 2019 4:48 AM

Wael on Friday Squid Blogging: Squidfall Safety:

@Tatütata,

BTW, I didn't get the helicopter reference at once,

It's the one that most resembles the hieroglyphic symbol at Abydos. In my opinion.

December 9, 2019 4:47 AM

Curious on Friday Squid Blogging: Squidfall Safety:

I think I read about something called ultra wideband wireless signals the other day. I wonder if this reference to Irish tech below might be the same type of thing. Re. Brian Kreb's recent article on Apple's short range ultra wideband tech (which apparently has a privacy violation issue involved with it).

https://www.irishtimes.com/news/science/2019-parsons-medal-awarded-to-michael-mclaughlin-1.4107021 (not really a tech sentric article)...

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December 9, 2019 3:51 AM

Tatütata on Friday Squid Blogging: Squidfall Safety:

1) How many bits per symbol?

I was quite conversant 25 years ago in the original Eureka 147 DAB standard (but never had a receiver!).

ETSI EN 300 401 defined several transmission modes, including mode II that survived in DAB+.

In that mode, symbols are spaced 312µs apart, of which 250µs must be acquired before demodulation can be performed with a FFT. These durations are much longer than the multipath spread in the expected environment, and are also determined in transmitter placement and synchronisation scenarios in Single Frequency Networks....

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December 9, 2019 3:23 AM

likhitha on Liars and Outliers Galleys:

Good to become visiting your weblog again, it has been months for me. Nicely this article that i've been waited for so long. I will need this post to total my assignment in the college, and it has exact same topic together with your write-up. Thanks, good share.
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December 9, 2019 1:23 AM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Tatütata,

Clive, I'm sorry to break this to you, but GSM has already been completely retired in quite a few countries including Germany, Australia, Canada. 3G/UMTS is on its way out too.

Firstly I was quite specific about 2G technology and said why it applied in certain places (infrastructure usage) and that service providers wanted shot of it.

Secondly is the issue of nomenclature, saying "GSM has been retired" rather depends on what you mean by "GSM" which neither you nor the article you link to are very clear on.

GSM is the...

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December 9, 2019 12:11 AM

Name on Cameras that Automatically Detect Mobile Phone Use:

The argument,"won't somebody think of the children", (or road deaths), keeps us in a state of constant anxiety, while we lose all privacy and/or control over our lives.

We seem to forget that the global population is OVER 7 Billion now.
According to the chart below, this explosion has happened only in the last 2000 years.

https://ourworldindata.org/grapher/exports/world-population-since-10000-bce-ourworldindata-series.svg

Along with the...

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December 8, 2019 9:50 PM

Wael on Friday Squid Blogging: Squidfall Safety:

@ Tatütata, et all,

For the difference between bps and baud, consider an OFDM symbol ...

1) How many bits per symbol?
2) If you have two symbols representing 0, 1 then the Bit Rate = The symbol rate = baud

Do you disagree with the second point?

December 8, 2019 9:05 PM

Tatütata on Friday Squid Blogging: Squidfall Safety:

2G is still going to be around for some time

Clive, I'm sorry to break this to you, but GSM has already been completely retired in quite a few countries including Germany, Australia, Canada. 3G/UMTS is on its way out too.

For the difference between bps and baud, consider an OFDM symbol such as used DVB-T or DAB, with a duration in the hundreds of µs, but with bitrates in MBPS.

December 8, 2019 8:35 PM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Anders,

How many baud have new ITU V.44 modem standard

You may want to think about what you are asking, your link comes up as being about vodka...

That said,

V.44 is an ITU-T standard for modem data compression. Not for the modem (V.92). In theory V.44 provides for upto a 6:1 compression ratio.

V.92 is a Digital not analogue line modem that is an augmentation of V.90. It uses digital PCM in both directions on a "two pair" "4-Wire" electrical interface.

V.90 is an ITU-T standard for 56 Kbps combined digital and analog...

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December 8, 2019 7:30 PM

MarkH on RSA-240 Factored:

@SpaceLifeForm:

Well, there's a long history of seeking out formulas for primes. Both Fermat and Mersenne numbers were suspected (or hoped) to be always prime. In both cases the first few in the sequence really are prime, and after that the bigger numbers were very difficult to test in the days before computing machinery.

The proof attributed to (or at least written up by} Euclid of an infinitude of primes is constructive (it shows how to make a new bigger prime than those you already know), and is in fact a formula for primes which always works....

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December 8, 2019 6:47 PM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ SpaceLifeForm, Anders,

Until any TLA proves their worth, none can be trusted.

Just one caveat, the opposit applies,

    You are not a murderer untill you kill someone, thus potentially everyone is a murderer.

In otherwords "trust" is highly ephemeral, and past behavior good or bad is no real indicator of future behaviour good or bad...

The CIA motto is "In God We Trust" actually meaning "Every other bugger we check continuously".

But as a friend once put it,

    Humans generaly over trust, thus get hurt by friends. But...

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December 8, 2019 6:26 PM

Sherman Jay on Friday Squid Blogging: Squidfall Safety:

@SpaceLifeForm from December 8, 2019 2:09 PM

that car caught in the twisty maze of passages has two passengers: Woods and Crowther LOL

@Another Mouse • December 8, 2019 4:06 PM
referencing:
@clive

the computer clinics I hold are in a building that has a 'cable' ISP delivering wifi. They offer two access points one labelled with the name of the building, the other is labelled with the name of the building appended with '5G'.

However, there is a lot of (intentional!?) confusion by the term '5G'.

Some are using it to mean Fifth...

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December 8, 2019 6:20 PM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Wael,

If there are only two symbols in the system (typically 0 and 1), then baud and bits per second (bps) are equivalent.

You realy need to kick that harsh mistress into touch...

A "symbol" is in effect a container or object of "state" whilst there can be many states available the symbol can only ever be in one state at a time.

So if your states are simply "0 and 1" your symbol is the equivalent of a single bit.

If your meaningfull states are -1,0,+1 then your symbol is the equivalent of a trit. Likewise if they are 0,1,2....

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December 8, 2019 5:58 PM

SpaceLifeForm on Friday Squid Blogging: Squidfall Safety:

@ Clive

"Oh that's easy, just write your own "byte code threded interpreter" like a striped down Forth or Java in BASIC and shove the
"dictionary" in DIM or DATA arrays."

LOL. Where is WebAssembly?

You are really slacking dude. ;-)

December 8, 2019 5:50 PM

Anders on Friday Squid Blogging: Squidfall Safety:

@Clive

Yes, that's one option.

Another one i'm thinking is to build a keyboard
emulator that "plays back" keypresses at high speed.
Raspberry PI or Arduino, BASIC programs reside on
flash SD card. Similar like this.

null-byte.wonderhowto.com/how-to/load-use-keystroke-injection-payloads-usb-rubber-ducky-0176829/

December 8, 2019 5:44 PM

SpaceLifeForm on Friday Squid Blogging: Squidfall Safety:

@ Anders

The problem is simple. They may have been giving me a clue. It may have been a comm.

We just don't know yet.


The Nutshell is this:

Until any TLA proves their worth, none can be trusted.


December 8, 2019 5:39 PM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Anders,

But i'm still searching some trivial genius way :)

Oh that's easy, just write your own "byte code threded interpreter" like a striped down Forth or Java in BASIC and shove the "dictionary" in DIM or DATA arrays.

Almost too trivial to mention ;-)

December 8, 2019 5:32 PM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Another Mouse,

Why is all the world setting 5g equal to small cells?

To get the 5G millimetric bands to have a very high user bandwidth per geographic area (though how they will do the physical "back haul" to suppprt it is anybodies guess currently).

5G as advertised is a mish mash, it has both 4G and LTE as the fall back (which is mostly the default operation currently). but this limits user bandwidth in it's larger geographic area and due to other reasons has significantly greater latency than the "proposed" 5G millimetric bands.

The...

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December 8, 2019 5:19 PM

Anders on Friday Squid Blogging: Squidfall Safety:

@SpaceLifeForm

"I've never met her either."

But you still have your chance :)

www.toopics.com/bri_healthy_mons/followers?lang=ja

December 8, 2019 4:52 PM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Anders,

How can i add a new line to the program from *INSIDE* the running program? So that i RUN a program and after that the LIST shows there a new line in the program? Basically a self-modifying code.

With old BASIC interpreters with little memory, the real problem was a way to make sufficient space to store the program you are loading. In some you could use REM statments in others DIM statments. But you still had the "line number" issues. You still see this with many of the "BASIC written in C" programs you can download. Either they have their own...

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December 8, 2019 4:52 PM

SpaceLifeForm on Friday Squid Blogging: Squidfall Safety:

@ Anders

'Same problem that once there was with early computers - you have a computer, you had to get a program into the memory. This was quite a task so they didn't turn off the early computers for months"

Maybe. I have booted computers with Hollerith cards, or switches.

Of course, I am old.

December 8, 2019 4:38 PM

Anders on Friday Squid Blogging: Squidfall Safety:

@Clive

Baud is nothing more and nothing less than amount of signalling units per second.
Each signalling unit may be one bit, may be more than one bit
or may be less than one bit. But if they are equal then bitrate=baud.

If we have 75 baud (= 75 signalling units per second) and our protocol
consist of 1 start bit, 5 data bits and 1.5 stop bits, then we transfer
75/7.5=10 characters per second. See my table above.

December 8, 2019 4:17 PM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ MarkA,

As you may guess, the point is to be able to use a computer old enough to _probably_ lack backdoors, over a COTS mobile

It probably can not be made to work. The reason is still the same as the one I pointed out why the "JackPair" system could probably never be made to work the way they wanted. It's the use of hidden effectively inband control data and CELP codecs which originated from work by the NSA. The CELP codecs actually do not send the audio signal but a poor reconstruction facsimile of one, that relys on the fact the human brain is...

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December 8, 2019 4:06 PM

Another Mouse on Friday Squid Blogging: Squidfall Safety:

@clive

Why is all the world setting 5g equal to small cells?

5g is just a little face lift of lte. You can run it over any frequency band thats available for 4g plus a few more.

In my country one operator is rolling out 5g on previous 3g frequencies, its also as slow as 3g was i heeard :-P

If you are their customer you profit of worse connection with a 4g mobile not bought from this operator. As they won't let me do volte so im now falling back to the downgraded 3g network...

So even if you boycott 5g it catches you...

December 8, 2019 4:01 PM

Anders on Friday Squid Blogging: Squidfall Safety:

@Clive

Don't confuse here those WPM's.
Those are evil.

Read this.

books.google.ee/books?id=Ww4SBQAAQBAJ&pg=PA107&lpg=PA107

December 8, 2019 3:37 PM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Wael,

Splitting hairs on me! Assuming two symbols, ma man.

Not realy, whilst RS232 serial signaling is still around where the information rate[1] and channal baud rate are both bi-level, this is very much less the case these days. I regularly have to work with QAM-64 and QAM-256 and knowing their strength and weaknesses is important as is the difference between the information rate into the modulator and baud rate on the line. As well as of course knowing what the information companding rate out of a compander that goes into the modulator is....

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December 8, 2019 2:55 PM

David on Election Machine Insecurity Story:

Ok touch screens have glitches, the calibration can be off. Touching one area can be interpreted as coming from another, but the that alone can not cause a discrepancy betwixt the e-record and the paper one. Could it be hardware only? Does not seem likely with printed circuits but with poor design maybe. Firmware does seem likely. But would be there for all machines with the same firmware.. What seems likely to me is an unwieldy setup method. Too much user input required that should have not even been an option or a poorly conceived option that lead to unwanted (or wanted but that is...

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December 8, 2019 2:40 PM

Anders on Friday Squid Blogging: Squidfall Safety:

@Wael

No problem, i hardly even noticed it ;)

But we need to bring alone also Bell 101, because
from this EVERYTHING started, including social media ;)

en.wikipedia.org/wiki/Community_Memory

December 8, 2019 2:13 PM

Wael on Friday Squid Blogging: Squidfall Safety:

@Anders

Excuse the inadvertent letter transposition. The eyes are cloudy, the skull is heavy, and the mood is goofy.

@Clive Robinson,

The harsh dame is working extra hard! Can you invite her over and give me a break?

December 8, 2019 2:09 PM

SpaceLifeForm on Friday Squid Blogging: Squidfall Safety:

@ Clive

"True but he did not say which one to take, left or right, or which way to go at the second or more forks..."

Which is the point. Routing traffic.

Eventually, hopefully the car (encrypted payload), will find a petrol station.

And another. And another.

Think NNTP.

Another car (same payload), is in another twisty maze of passages, all different.


December 8, 2019 2:05 PM

Wael on Data and Goliath Is Finished:

@Clive Robinson,

Oh! Same code on every book! I thought @Bruce just made it up on the fly.

Thanks for the hint!

December 8, 2019 1:49 PM

Clive Robinson on Data and Goliath Is Finished:

@ Wael,

Think of an idyllic day by the water looking across to an acient building, as a boat pair rows past columns of gracefull splendor. Contemplate the thought if you could not crack this code would you enjoy the next book?

December 8, 2019 1:49 PM

SpaceLifeForm on Friday Squid Blogging: Squidfall Safety:

@ Anders

I'm guessing your BASIC Interpreter does not support APPEND

If it does, I would write a stub, with huge line numbers, that after loading, does a GOTO 10 (or another line number).

May need to RENUM.

APPEND is a misnomer.

It should be called OVERLAY.

But, it will depend on the interpreter semantics.

December 8, 2019 1:44 PM

Wael on Friday Squid Blogging: Squidfall Safety:

@Andres,

Regarding Bell 103

I feel like stirring some trouble:

Q: When is 1/2 more trouble than 1?

A: Bell 103 vs. Bell 206.
Now let's start a discussion about Bell 103 != 1/2 Bell 206 ;)

I have a feeling someone is sweating bullets trying to dispute this 'myth'. Want to talk analog? I'm your huckleberry;)

December 8, 2019 12:55 PM

MikeA on Friday Squid Blogging: Squidfall Safety:

@Clive -- Thank you for taking on the baud == bit-per-second myth.

_Maybe_ with your august personage weighing in, that misconception will lessen. Or, maybe once all of us who have ever dealt with the messy analog nature of "digital" communication will die out and the world will just keep ticking along with whatever became popular just before the nerdpocalypse (albeit with various revisions to the "speeds up to" claims of wireless carriers, with no change in delivered speed).

In any case, on a note somewhat related to this blog, I have from time to time messed around with...

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December 8, 2019 12:54 PM

Jeffrey Deutsch on The NSA Warns of TLS Inspection:

How secure do you consider Gmail's TLS? And what would you be willing to email over that?

Does it make a difference whether it's on a laptop/desktop using Windows or a smartphone or tablet using Android?

(I'm talking about ordinary personal Gmail, not G Suite.)

PS: Thanks, RealFakeNews and TRX!

December 8, 2019 12:43 PM

SpaceLifeForm on RSA-240 Factored:

@ MarkH

Well, there you go. My Quick and Dirty tests with old software were flawed.

Basic on PDP-11. Floating point fail.

Modern software obviously works better.

But, I do not trust GMP. Have seen issues.

December 8, 2019 12:42 PM

Anders on Friday Squid Blogging: Squidfall Safety:

@Who?

"Sorry, I am start feeling I do not really understand the problem you are trying to solve"

Problem is very easy - imagine (early) computer with no other communication
means that serial port (RS-232). No disk or any other recording media.
This computer has BASIC interpreter. Your task is to get there
10000 line BASIC program without typing it in.

Same problem that once there was with early computers - you have a computer, you had to get a program into the memory. This was quite a task so they didn't turn off the early computers for months.

December 8, 2019 12:19 PM

Who? on Friday Squid Blogging: Squidfall Safety:

@ Wael

Not to say Anders will need to fix the GOTO and GOSUB jumps once the new code is inserted. I do not see how inserting code will make it easier hiding the downloader.

Ok, a last approach. You can run something like:

 10 REM program starts here
 20 LET D=1: REM D=1 (executes downloader), D=0 (does not)
 30 IF (D=0) THEN GOTO 100
 40 REM downloader starts here
 50 [...]
100 REM now the code itself
110 POKE D_address, 0: REM D_address is address of variable D
120 [...]

Sorry, I am start feeling I do not really understand the problem you are trying to solve.

December 8, 2019 12:02 PM

Wael on Friday Squid Blogging: Squidfall Safety:

@Anders,

But i'm still searching some trivial genius way :)

Adding a line in the middle of your program means you'll need to relocate the remainder of your original code by that much offset. Somehow I get the feeling you already know the answer or at least you partially know it.

Now tell me the full story ;)

December 8, 2019 11:52 AM

Anders on Friday Squid Blogging: Squidfall Safety:

@Who?, Wael,

That means i must convert all programs into tokenized
format as they are in form of bytes in memory.

More easy would be wrote all programs again in pure machine
code, poke them into memory at appropriate segment:offset and
run.

But i'm still searching some trivial genius way :)

December 8, 2019 11:44 AM

Wael on Friday Squid Blogging: Squidfall Safety:

@Who?, @Anders,

coding the downloaded program into DATAs...

I was thinking along these lines. High level: peek from memory and poke into the new program.

December 8, 2019 11:38 AM

Who? on Friday Squid Blogging: Squidfall Safety:

@ Anders

Perhaps the easier way is coding the downloaded program into DATAs, at the end of the downloader itself, read it from the DATA structures (using a FOR loop and a PEEK instruction) and overwrite the downloader (POKE) from the beginning.

December 8, 2019 11:33 AM

Anders on Friday Squid Blogging: Squidfall Safety:

@Wael

Reason is easy - IBM PC Cassette BASIC (without actually having cassette interface)

So no ANY means to save program anywhere, whatsoever, nor load it from somewhere in normal means (disk etc).

And i'm lazy, i don't want to spend a half a day to enter manually new program.
So i want to write SMALL downloader, load new program over COM port and then replace the loader with downloaded program.

But no easy solution yet...

December 8, 2019 11:21 AM

Who? on Friday Squid Blogging: Squidfall Safety:

@ Wael, Anders

I think using PEEK and POKE is the easier way:

https://www.atarimagazines.com/compute/issue20/197_1_Self-Modifying_Programs_In_BASIC.php

I would have suggested using an Spectrum or MSX and write the equivalent in Zilog Z80-A assembler, and calling the code from the BASIC program using "RANDOMIZE USR" instead. In few words, PEEK and POKE are your friends.

You may have some luck writing the to-be-added code in a REM line and try to convert...

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December 8, 2019 11:19 AM

Wael on Friday Squid Blogging: Squidfall Safety:

@Anders,

I want to download a new program over the COM port (trivial) and then overwrite the current downloader.

I'm not sure I understand. You want to modify the downloader after you download a program? What's the relationship between the downloader and the new program, and why modify it 'after', not 'before'?

Then again, why self-modifying, and not 'post processing'? Like with a Perl script or something? Obviously there're some run-time components that you need to change, but it seems you need to post-process something, unless the downloaded...

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December 8, 2019 11:12 AM

Anders on Friday Squid Blogging: Squidfall Safety:

new
Ok 
10 print "Test"
20 print "Test2"
30 delete 20-30
list
10 PRINT "Test"
20 PRINT "Test2"
30 DELETE 20-30
Ok
run
Test
Test2
Ok 
list
10 PRINT "Test"
Ok

December 8, 2019 10:58 AM

Wael on Friday Squid Blogging: Squidfall Safety:

@Anders,

Deleting program lines from *INSIDE* the running program is easy, piece of cake.

Share a slice of the cake and tell us how!

December 8, 2019 10:58 AM

Anders on Friday Squid Blogging: Squidfall Safety:

@Wael

Thanks, no luck yet, because there's still some limits.
It's IBM PC Cassette BASIC, so no possibility to LOAD or SAVE
or MERGE.
I want to download a new program over the COM port (trivial)
and then overwrite the current downloader.

Sigh, no luck yet. I want to avoid altering the memory,
in tokenized format etc.

December 8, 2019 10:40 AM

Wael on Friday Squid Blogging: Squidfall Safety:

@Anders,

How can i add a new line to the program from *INSIDE* the running program?

Many moons ago, on a Commodore 128 (or 64, Vic 20/16,) games were entered using BASIC and 'opcodes' using hexadecimal in conjunction with peek and poke commands. This Stack Exchange article may give some ideas.. They mention the command 'Alter', which I don't recall ever using.

December 8, 2019 10:13 AM

Electron 007 on Andy Ellis on Risk Assessment:

psychology of risk

The entire field of psychology is all about arbitrarily labeling individuals as "risks" to themselves, others, and society, imposing "mental health care" on them on an involuntary basis, and placing them on FBI, ATF, NICS and various other national and international ban lists and blacklists as mental detectives and social undesirables, consigned to the ghettos and gas chambers for life without parole by a fiat justice system of Orwellian notions of "thoughtcrime" and "precrime" ...

December 8, 2019 9:25 AM

Anders on Friday Squid Blogging: Squidfall Safety:

But now i need an old school BASIC language hacker help.

How can i add a new line to the program from *INSIDE* the running program?
So that i RUN a program and after that the LIST shows there a new line in the
program? Basically a self-modifying code.

Deleting program lines from *INSIDE* the running program is easy,
piece of cake. But i need to add a new line. Or a whole new program.

Dialect is MS BASIC (=Altair, IBM PC etc).

December 8, 2019 5:37 AM

Anders on Friday Squid Blogging: Squidfall Safety:

@Clive @Wael

Baud may be a complicated thing at first glance but this is how
it was organized at the Teletype era and this gives better overview
of it.

300 baud = 30 character/sec * 10 characters (1 start 8 data, 1 stop)
110 baud = 10 character/sec * 11 characters (1 start 8 data, 2 stop)
75 baud = 10 character/sec * 7.5 characters (1 start, 5 data , 1.5 stop)
50 baud = 6.6 character/sec * 7.5 characters (1 start, 5 data , 1.5 stop)
45.45 baud = 6 character/sec * 7.5 characters (1 start, 5 data , 1.5 stop)

So although 75 and 110...

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December 8, 2019 5:33 AM

Alyer Babtu on Friday Squid Blogging: Squidfall Safety:

Extending the canon ([1], [2], [3]): Walter Mitty meets “World on a Wire” ?

https://arstechnica.com/gaming/2019/12/a-nebbishy-bank-teller-discovers-hes-trapped-in-a-video-game-in-free-guy/

[1] The Committee excludes the derivative trash “The Matrix”, except for a few scenes in the first film.

[2] The “Tron” films have been provisionally accepted.

[3] The first “Wreck-it Ralph”, only, is gloriously accepted.

December 8, 2019 3:11 AM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Wael,

I heard a while back that it's not healthy to sleep with the feet uncovered. Didn't make sense to me.

It's all to do with chemistry and phase change with temprature.

Basically when you sleep your blood preasure thus flow to the extremities like your hands and feet drops quite a bit over night. Which with the modern habit of using duvets causes problems.

Back in times past people were shorter and slept in beds long enough that the sheets and blankets would remain tucked in at the bottom thus trapping warmth around the feet. However...

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December 8, 2019 2:46 AM

Clive Robinson on Data and Goliath Is Finished:

@ Wael,

Entirely just for fun,

14,24,34,13,23,12,22,31,33,32,11,21,31.

December 8, 2019 2:32 AM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Wael,

Bits Per Second (Bauds:)

How loudly should I shout "Noooo" ;-)

For those who might be puzzled there is a difference between "bits per second" and "bauds".

Firstly "baud" is only used with respect to the "transmission channel" that is "after the modulator" and refers to "the transmition rate" in the number of symbols not "bits".

Secondly "bits" is only used in the digital circuits "before the modulator" and refers to "the information rate" not the transmission rate in "symbols".

As a simple example, lets assume a VDU...

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December 8, 2019 1:45 AM

Wael on Friday Squid Blogging: Squidfall Safety:

@Clive Robinson,

"wear two pairs of wooly/thermal socks in bed at night, instead of bare feet"

What's up with that? I heard a while back that it's not healthy to sleep with the feet uncovered. Didn't make sense to me.

December 8, 2019 12:49 AM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Wael,

You may have the choice now.

True, a bit like my health...

@ ALL,

Thanks for the "get well" wishes.

As I said it was realy quite excruciatingly painful, but this time round not serious.

Mad as it might sound the temporary cure is to "wear two pairs of wooly/thermal socks in bed at night, instead of bare feet", keep taking exercise, and take some mild CNS pain killers if needed... Untill I get to see the cardiac specialist for a change in prescription.

December 8, 2019 12:28 AM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Frankly,

Doesn't this greatly compromise the security against a brute force attack?

Not half... It's decades since I worked it out after seeing a film with a scene of somebody getting back through a security door in panic just pressing key after key till they got the green light.

If I remember correctly it came to 173x3 key entries instead of 999x3 key entries.

After all, it's simple to see that 123456789 matches, 123,234,345,456,567,678,789. So seven guesses for the same number of key presses as three guesses if this "security feature"...

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December 7, 2019 11:42 PM

Clive Robinson on Andy Ellis on Risk Assessment:

@ TRX,

As far as I'm concerned they're thieves, and they owe me for all the stolen bandwidth I had to pay for.

You are not the only one to remember such evil. Worse it did not stop with dial up, it carried on with mobile broadband and still does... But even if you've got no data caps, it's still your life they are stealing.

Yes you cam turn off javascript and see pages load five or ten times faster, but then some website owners have the temerity of accusing you of stealing their content (Condé Nasty being but one).

Others on my "burn...

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December 7, 2019 10:05 PM

Wael on Friday Squid Blogging: Squidfall Safety:

100 times the speed of light.
Been a long night!

Final hint: BPS doesn't stand for Bits Per Second (Bauds:) it stands for: B___ of P___ per Second. The 'B' is a multiplier and the 'P' is a unit of distance.

December 7, 2019 9:34 PM

lurker on Friday Squid Blogging: Squidfall Safety:

Another week, another SW update ...
This time the update was applied by the vendor, SAP, without the instant knowledge of the client (the lawyers will argue the TOS about prior consent). We don't know if an "unreserved apology" is sufficient to assuage exposed citizens in a nation that doesn't have a second amendment.
https://seclists.org/dataloss/2019/q4/163

December 7, 2019 8:17 PM

Frankly on Friday Squid Blogging: Squidfall Safety:

Door security system (new) "don't worry if someone watches you enter the code. Add any extra digits before or after your code and Wyze Lock will still unlock."

Doesn't this greatly compromise the security against a brute force attack?

December 7, 2019 7:58 PM

MarkH on RSA-240 Factored:

12! + 13 = 29 • 2503 • 6599

The relation holds true for the first 5 primes; among the next 100 primes, the expression is composite for all but one: 52! + 53 seems to be prime.

It would be interesting to explore whether it can be proven that the number of primes of this form is finite, or infinite.

December 7, 2019 7:31 PM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ Bruce and the usual suspects,

This on potential 5G threats might be of interest,

https://securelist.com/5g-predictions-2020/95386/

It's important to not that the base of what users will be told is "5G" will actually be "LTE" across "4G" which will give users phones network interoperability across existing networks.

5G it's self is not yet standardized and different countries are allocating non interoprable frequency blocks. Not just non interoperable from country to country but non...

Read More →

December 7, 2019 6:35 PM

Clive Robinson on Friday Squid Blogging: Squidfall Safety:

@ SpaceLifeForm,

We can split the profits ;-)

Ahh for whom the bridge tolls ;-)

With regards,

As an old philosopher noted, when you come to the fork in the road, take it.

True but he did not say which one to take, left or right, or which way to go at the second or more forks...

If you flip and flop you kind of maintain a course, at the other extream of always making thr same decision you just go in circles. In between well, you grt that drunkards walk, which on mass moves generally in the same collective...

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December 7, 2019 5:45 PM

Wael on Friday Squid Blogging: Squidfall Safety:

@Anders,

If aliens visit the Earth, they do it via Bell 103 ;)

Of course! At about 1/3 the speed of light, it's the only thing that makes sense! The other interpretation: Bell 103 = Bell 206/2 is trivial.

Show that Bell 103 goes at 1/3 the speed of light, and get a +300 :) [1]

[1] Hint: 300 BPS :)

December 7, 2019 5:15 PM

SpaceLifeForm on Friday Squid Blogging: Squidfall Safety:

@ Clive

"Encryption is not enough"

Yep, yep, yep.

Must circumvent traffic analysis.

As an old philosopher noted, when you come to the fork in the road, take it.

December 7, 2019 4:52 PM

TRX on Andy Ellis on Risk Assessment:

> Andy Ellis, the CSO of Akamai,

Up until well after the turn of the century our only connection to the net was via dial-up. We paid by the minute, and the lines were so poor we seldom got a connect faster than 2400 baud.

So I'd sit there with a page stalled, watching the clock ticking money away, before advertisements would load. Netscape told you the URLs the page was trying to hit on the bottom status line, something that was pretty handy. Eventually I noticed that it was almost always [something]akamai[something] that was holding things up. And then I found out how...

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December 7, 2019 4:18 PM

vas pup on Commenting Policy for This Blog:

vas pup • December 7, 2019 4:16 PM

@Bruce:
Thank you for the link and very good presentation. [on risk]

I just curiuous do you ask Moderator to pay attention to the answer at the end of presentation (about 1h 4min)?

I love his point!

Best,
VP

Just in case it'll be sanitzed before YOu have a chance to read.

December 7, 2019 4:16 PM

vas pup on Andy Ellis on Risk Assessment:

@Bruce:
Thank you for the link and very good presentation.

I just curiuous do you ask Moderator to pay attention to the answer at the end of presentation (about 1h 4min)?

I love his point!

Best,
VP

@Edward: I'll definitely look in details at the links you've provided lately. Thank you.

December 7, 2019 3:37 PM

SpaceLifeForm on RSA-240 Factored:

@ Clive

Besides my thought of infinite double twin primes, here's a really old one:

(old, as in 5 decades ago)

If P is prime, then (P-1)! + P is prime.

I can not even recall how I came up with that.

But, I never found it to be false.

Sidebar photo of Bruce Schneier by Joe MacInnis.