Entries Tagged "redaction"

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Unredacted U.S. Diplomatic WikiLeaks Cables Published

It looks as if the entire mass of U.S. diplomatic cables that WikiLeaks had is available online somewhere. How this came about is a good illustration of how security can go wrong in ways you don’t expect.

Near as I can tell, this is what happened:

  1. In order to send the Guardian the cables, WikiLeaks encrypted them and put them on its website at a hidden URL.
  2. WikiLeaks sent the Guardian the URL.
  3. WikiLeaks sent the Guardian the encryption key.
  4. The Guardian downloaded and decrypted the file.
  5. WikiLeaks removed the file from their server.
  6. Somehow, the encrypted file ends up on BitTorrent. Perhaps someone found the hidden URL, downloaded the file, and then uploaded it to BitTorrent. Perhaps it is the “insurance file.” I don’t know.
  7. The Guardian published a book about WikiLeaks. Thinking the decryption key had no value, it published the key in the book.
  8. A reader used the key from the book to decrypt the archive from BitTorrent, and published the decrypted version: all the U.S. diplomatic cables in unredacted form.

Memo to the Guardian: Publishing encryption keys is almost always a bad idea. Memo to WikiLeaks: Using the same key for the Guardian and for the insurance file—if that’s what you did—was a bad idea.

EDITED TO ADD (9/1): From pp 138-9 of WikiLeaks:

Assange wrote down on a scrap of paper: ACollectionOfHistorySince_1966_ToThe_PresentDay#. “That’s the password,” he said. “But you have to add one extra word when you type it in. You have to put in the word ‘Diplomatic’ before the word ‘History’. Can you remember that?”

I think we can all agree that that’s a secure encryption key.

EDITED TO ADD (9/1): WikiLeaks says that the Guardian file and the insurance file are not encrypted with the same key. Which brings us back to the question: how did the encrypted Guardian file get loose?

EDITED TO ADD (9/1): Spiegel has the detailed story.

Posted on September 1, 2011 at 12:56 PM • View Comments

Details Removed from Book at Request of U.S. Department of Defense

From the AFP:

A publisher has agreed to remove US intelligence details from a memoir by a former army officer in Afghanistan after the Pentagon raised last-minute objections, officials said Friday.

The book, “Operation Dark Heart,” had been printed and prepared for release in August but St. Martin’s Press will now issue a revised version of the spy memoir after negotiations with the Pentagon, US and company officials said.

In an unusual step, the Defense Department has agreed to reimburse the company for the cost of the first printing, spokesman Colonel Dave Lapan told AFP.

The original manuscript “contained classified information which had not been properly reviewed” by the military and US spy agencies, he said.

St. Martin’s press will destroy copies from the first printing with Pentagon representatives observing “to ensure it’s done in accordance with our standards,” Lapan said.

The second, revised edition would be ready by the end of next week, said the author’s lawyer, Mark Zaid.

EDITED TO ADD (9/30): An analysis of the redacted material—obtained by comparing the two versions—is amusing.

Posted on September 23, 2010 at 7:19 AM • View Comments

AT&T's iPad Security Breach

I didn’t write about the recent security breach that disclosed tens of thousands of e-mail addresses and ICC-IDs of iPad users because, well, there was nothing terribly interesting about it. It was yet another web security breach.

Right after the incident, though, I was being interviewed by a reporter that wanted to know what the ramifications of the breach were. He specifically wanted to know if anything could be done with those ICC-IDs, and if the disclosure of that information was worse than people thought. He didn’t like the answer I gave him, which is that no one knows yet: that it’s too early to know the full effects of that information disclosure, and that both the good guys and the bad guys would be figuring it out in the coming weeks. And, that it’s likely that there were further security implications of the breach.

Seems like there were:

The problem is that ICC-IDs—unique serial numbers that identify each SIM card—can often be converted into IMSIs. While the ICC-ID is nonsecret—it’s often found printed on the boxes of cellphone/SIM bundles—the IMSI is somewhat secret. In theory, knowing an ICC-ID shouldn’t be enough to determine an IMSI. The phone companies do need to know which IMSI corresponds to which ICC-ID, but this should be done by looking up the values in a big database.

In practice, however, many phone companies simply calculate the IMSI from the ICC-ID. This calculation is often very simple indeed, being little more complex than “combine this hard-coded value with the last nine digits of the ICC-ID.” So while the leakage of AT&T’s customers’ ICC-IDs should be harmless, in practice, it could reveal a secret ID.

What can be done with that secret ID? Quite a lot, it turns out. The IMSI is sent by the phone to the network when first signing on to the network; it’s used by the network to figure out which call should be routed where. With someone else’s IMSI, an attacker can determine the person’s name and phone number, and even track his or her position. It also opens the door to active attacks—creating fake cell towers that a victim’s phone will connect to, enabling every call and text message to be eavesdropped.

More to come, I’m sure.

And that’s really the point: we all want to know—right away—the effects of a security vulnerability, but often we don’t and can’t. It takes time before the full effects are known, sometimes a lot of time.

And in related news, the image redaction that went along with some of the breach reporting wasn’t very good.

Posted on June 21, 2010 at 5:27 AM • View Comments

TSA Publishes Standard Operating Procedures

BoingBoing is pretty snarky:

The TSA has published a “redacted” version of their s00per s33kr1t screening procedure guidelines (Want to know whether to frisk a CIA operative at the checkpoint? Now you can!). Unfortunately, the security geniuses at the DHS don’t know that drawing black blocks over the words you want to eliminate from your PDF doesn’t actually make the words go away, and can be defeated by nefarious al Qaeda operatives through a complex technique known as ctrl-a/ctrl-c/ctrl-v. Thankfully, only the most elite terrorists would be capable of matching wits with the technology brilliance on display at the agency charged with defending our nation’s skies by ensuring that imaginary hair-gel bombs are kept off of airplanes.

TSA is launching a “full review” to determine how this could have happened. I’ll save them the effort: someone screwed up.

In a statement Tuesday night, the TSA sought to minimize the impact of the unintentional release—calling the document “outdated,” “unclassified” and unimplemented—while saying that it took the incident “very seriously,” and “took swift action” when it was discovered.

Yeah, right.

The original link to the document is dead, but here’s the unredacted document.

I’ve skimmed it, and haven’t found anything terribly interesting. Here’s what Wired.com noticed:

One of the redacted sections, for example, indicates that an armed law enforcement officer in or out of uniform may pass beyond the checkpoint without screening after providing a U.S. government-issued photo ID and “Notice of LEO Flying Armed Document.”

Some commercial airline pilots receive training by the U.S. Marshals Service and are allowed to carry TSA-issued firearms on planes. They can pass through without screening only after presenting “bonafide credentials and aircraft operator photo ID,” the document says.

Foreign dignitaries equivalent to cabinet rank and above, accompanying a spouse, their children under the age of 12, and a State Department escort are exempt from screening.

There are also references to a CIA program called WOMAP, the Worldwide Operational Meet and Assist Program. As part of WOMAP, foreign dignitaries and their escorts—authorized CIA representatives—are exempt from screening, provided they’re approved in advance by TSA’s Office of Intelligence.

Passengers carrying passports from Cuba, Iran, North Korea, Libya, Syria, Sudan, Afghanistan, Lebanon, Somalia, Iraq, Yemen or Algeria are to be designated for selective screening.

Although only a few portions of the document were redacted, the manual contains other tidbits that weren’t redacted, such as a thorough description of diplomatic pouches that are exempt from screening.

I’m a little bit saddened when we all make a big deal about how dumb people are at redacting digital documents. We’ve had a steady stream of these badly redacted documents, and I don’t want to lose that. I also don’t want agencies deciding not to release documents at all, rather than risk this sort of embarrassment.

EDITED TO ADD (12/10): News:

Five Transportation Security Administration employees have been placed on administrative leave after a sensitive airport security manual was posted on the Internet, the agency announced Wednesday.

EDITED TO ADD (12/12): Did the TSA compromise an intelligence program?

Posted on December 10, 2009 at 6:47 AM • View Comments

Yet Another Redacting Failure

This sort of thing happens so often it’s no longer news:

Conte’s e-mails were intended to be blacked out in a 51-page electronic filing Wednesday in which the government argued against the Chronicle’s motion to quash the subpoena. Eight of those pages were not supposed to be public.

But the redacted parts in the computer file could be seen by copying them and pasting the material in a word processing program.

Another news article here.

Posted on June 26, 2006 at 12:29 PM • View Comments

AT&T Rewrites its Privacy Policy

AT&T has a new privacy policy, and if you are its customer you have no choice but to accept it.

The new policy says that AT&T—not customers—owns customers’ confidential info and can use it “to protect its legitimate business interests, safeguard others, or respond to legal process.”

The policy also indicates that AT&T will track the viewing habits of customers of its new video service—something that cable and satellite providers are prohibited from doing.

Moreover, AT&T (formerly known as SBC) is requiring customers to agree to its updated privacy policy as a condition for service—a new move that legal experts say will reduce customers’ recourse for any future data sharing with government authorities or others.

EDITED TO ADD (6/27): User Friendly on the issue.

Posted on June 23, 2006 at 6:03 AM • View Comments

Major Vulnerability Found in Diebold Election Machines

This is a big deal:

Elections officials in several states are scrambling to understand and limit the risk from a “dangerous” security hole found in Diebold Election Systems Inc.’s ATM-like touch-screen voting machines.

The hole is considered more worrisome than most security problems discovered on modern voting machines, such as weak encryption, easily pickable locks and use of the same, weak password nationwide.

Armed with a little basic knowledge of Diebold voting systems and a standard component available at any computer store, someone with a minute or two of access to a Diebold touch screen could load virtually any software into the machine and disable it, redistribute votes or alter its performance in myriad ways.

“This one is worse than any of the others I’ve seen. It’s more fundamental,” said Douglas Jones, a University of Iowa computer scientist and veteran voting-system examiner for the state of Iowa.

“In the other ones, we’ve been arguing about the security of the locks on the front door,” Jones said. “Now we find that there’s no back door. This is the kind of thing where if the states don’t get out in front of the hackers, there’s a real threat.”

This newspaper is withholding some details of the vulnerability at the request of several elections officials and scientists, partly because exploiting it is so simple and the tools for doing so are widely available.

[…]

Scientists said Diebold appeared to have opened the hole by making it as easy as possible to upgrade the software inside its machines. The result, said Iowa’s Jones, is a violation of federal voting system rules.

“All of us who have heard the technical details of this are really shocked. It defies reason that anyone who works with security would tolerate this design,” he said.

The immediate solution to this problem isn’t a patch. What that article refers to is election officials ensuring that they are running the “trusted” build of the software done at the federal labs and stored at the NSRL, just in case someone installed something bad in the meantime.

This article compares the security of electronic voting machines with the security of electronic slot machines. (My essay on the security of elections and voting machines.)

EDITED TO ADD (5/11): The redacted report is available.

Posted on May 11, 2006 at 1:08 PM • View Comments

The NSA on How to Redact

Interesting paper.

Both the Microsoft Word document format (MS Word) and Adobe Portable Document (PDF) are complex, sophisticated computer data formats. They can contain many kinds of information such as text, graphics, tables, images, meta-data, and more all mixed together. The complexity makes them potential vehicles for exposing information unintentionally, especially when downgrading or sanitizing classified materials. Although the focus is on MS Word, the general guidance applies to other word processors and office tools, such as WordPerfect, PowerPoint, Excel, Star Office, etc.

This document does not address all the issues that can arise when distributing or downgrading original document formats such as MS Word or MS PowerPoint. Using original source formats, such as MS Word, for downgrading can entail exceptional risks; the lengthy and complicated procedures for mitigating such risks are outside the scope of this note.

EDITED TO ADD (2/1): The NSA page for the redaction document, and other “Security Configuration Guides,” is here.

Posted on February 1, 2006 at 1:09 PM • View Comments

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Sidebar photo of Bruce Schneier by Joe MacInnis.