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Facebook's Download-Your-Data Tool Is Incomplete

Privacy International has the details:

Key facts:

  • Despite Facebook claim, “Download Your Information” doesn’t provide users with a list of all advertisers who uploaded a list with their personal data.
  • As a user this means you can’t exercise your rights under GDPR because you don’t know which companies have uploaded data to Facebook.
  • Information provided about the advertisers is also very limited (just a name and no contact details), preventing users from effectively exercising their rights.
  • Recently announced Off-Facebook feature comes with similar issues, giving little insight into how advertisers collect your personal data and how to prevent such data collection.

When I teach cybersecurity tech and policy at the Harvard Kennedy School, one of the assignments is to download your Facebook and Google data and look at it. Many are surprised at what the companies know about them.

Posted on March 2, 2020 at 6:28 AMView Comments

Friday Squid Blogging: Squid Eggs

Cool photo.

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

Read my blog posting guidelines here.

EDITED TO ADD (3/4): I just deleted a slew of comments about COVID 19. I may reinstate some of them later; right now I want some time to think about what is relevant and what is not. Surely lots of things are relevant to this blog—fear, risk management, surveillance, containment measures—but most of the talk about the virus are not. I would like to suggest that those who wish to talk about the virus do so elsewhere, and those who want to talk specifically about the security/risk implications continue to do so, politely and respectfully.

Posted on February 28, 2020 at 4:08 PMView Comments

Humble Bundle's 2020 Cybersecurity Books

For years, Humble Bundle has been selling great books at a “pay what you can afford” model. This month, they’re featuring as many as nineteen cybersecurity books for as little as $1, including four of mine. These are digital copies, all DRM-free. Part of the money goes to support the EFF or Let’s Encrypt. (The default is 15%, and you can change that.) As an EFF board member, I know that we’ve received a substantial amount from this program in previous years.

Posted on February 28, 2020 at 1:53 PMView Comments

Deep Learning to Find Malicious Email Attachments

Google presented its system of using deep-learning techniques to identify malicious email attachments:

At the RSA security conference in San Francisco on Tuesday, Google’s security and anti-abuse research lead Elie Bursztein will present findings on how the new deep-learning scanner for documents is faring against the 300 billion attachments it has to process each week. It’s challenging to tell the difference between legitimate documents in all their infinite variations and those that have specifically been manipulated to conceal something dangerous. Google says that 63 percent of the malicious documents it blocks each day are different than the ones its systems flagged the day before. But this is exactly the type of pattern-recognition problem where deep learning can be helpful.

[…]

The document analyzer looks for common red flags, probes files if they have components that may have been purposefully obfuscated, and does other checks like examining macros­—the tool in Microsoft Word documents that chains commands together in a series and is often used in attacks. The volume of malicious documents that attackers send out varies widely day to day. Bursztein says that since its deployment, the document scanner has been particularly good at flagging suspicious documents sent in bursts by malicious botnets or through other mass distribution methods. He was also surprised to discover how effective the scanner is at analyzing Microsoft Excel documents, a complicated file format that can be difficult to assess.

This is the sort of thing that’s pretty well optimized for machine-learning techniques.

Posted on February 28, 2020 at 11:57 AMView Comments

Securing the Internet of Things through Class-Action Lawsuits

This law journal article discusses the role of class-action litigation to secure the Internet of Things.

Basically, the article postulates that (1) market realities will produce insecure IoT devices, and (2) political failures will leave that industry unregulated. Result: insecure IoT. It proposes proactive class action litigation against manufacturers of unsafe and unsecured IoT devices before those devices cause unnecessary injury or death. It’s a lot to read, but it’s an interesting take on how to secure this otherwise disastrously insecure world.

And it was inspired by my book, Click Here to Kill Everybody.

EDITED TO ADD (3/13): Consumer Reports recently explored how prevalent arbitration (vs. lawsuits) has become in the USA.

Posted on February 27, 2020 at 6:03 AMView Comments

Firefox Enables DNS over HTTPS

This is good news:

Whenever you visit a website—even if it’s HTTPS enabled—the DNS query that converts the web address into an IP address that computers can read is usually unencrypted. DNS-over-HTTPS, or DoH, encrypts the request so that it can’t be intercepted or hijacked in order to send a user to a malicious site.

[…]

But the move is not without controversy. Last year, an internet industry group branded Mozilla an “internet villain” for pressing ahead the security feature. The trade group claimed it would make it harder to spot terrorist materials and child abuse imagery. But even some in the security community are split, amid warnings that it could make incident response and malware detection more difficult.

The move to enable DoH by default will no doubt face resistance, but browser makers have argued it’s not a technology that browser makers have shied away from. Firefox became the first browser to implement DoH—with others, like Chrome, Edge, and Opera—quickly following suit.

I think DoH is a great idea, and long overdue.

Slashdot thread. Tech details here. And here’s a good summary of the criticisms.

Posted on February 25, 2020 at 9:15 AMView Comments

Russia Is Trying to Tap Transatlantic Cables

The Times of London is reporting that Russian agents are in Ireland probing transatlantic communications cables.

Ireland is the landing point for undersea cables which carry internet traffic between America, Britain and Europe. The cables enable millions of people to communicate and allow financial transactions to take place seamlessly.

Garda and military sources believe the agents were sent by the GRU, the military intelligence branch of the Russian armed forces which was blamed for the nerve agent attack in Britain on Sergei Skripal, a former Russian intelligence officer.

This is nothing new. The NSA and GCHQ have been doing this for decades.

Boing Boing post.

Posted on February 24, 2020 at 6:27 AMView Comments

Friday Squid Blogging: 13-foot Giant Squid Caught off New Zealand Coast

It’s probably a juvenile:

Researchers aboard the New Zealand-based National Institute of Water and Atmospheric Research Ltd (NIWA) research vessel Tangaroa were on an expedition to survey hoki, New Zealand’s most valuable commercial fish, in the Chatham Rise ­ an area of ocean floor to the east of New Zealand that makes up part of the “lost continent” of Zealandia.

At 7.30am on the morning of January 21, scientists were hauling up their trawler net from a depth of 442 meters (1,450 feet) when they were surprised to spot tentacles in amongst their catch. Large tentacles.

According to voyage leader and NIWA fisheries scientist Darren Stevens, who was on watch, it took six members of staff to lift the giant squid out of the net. Despite the squid being 4 meters long and weighing about 110 kilograms (240 pounds), Stevens said he thought the squid was “on the smallish side,” compared to other behemoths caught.

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

Read my blog posting guidelines here.

Posted on February 21, 2020 at 4:19 PMView Comments

Inrupt, Tim Berners-Lee's Solid, and Me

For decades, I have been talking about the importance of individual privacy. For almost as long, I have been using the metaphor of digital feudalism to describe how large companies have become central control points for our data. And for maybe half a decade, I have been talking about the world-sized robot that is the Internet of Things, and how digital security is now a matter of public safety. And most recently, I have been writing and speaking about how technologists need to get involved with public policy.

All of this is a long-winded way of saying that I have joined a company called Inrupt that is working to bring Tim Berners-Lee’s distributed data ownership model that is Solid into the mainstream. (I think of Inrupt basically as the Red Hat of Solid.) I joined the Inrupt team last summer as its Chief of Security Architecture, and have been in stealth mode until now.

The idea behind Solid is both simple and extraordinarily powerful. Your data lives in a pod that is controlled by you. Data generated by your things—your computer, your phone, your IoT whatever—is written to your pod. You authorize granular access to that pod to whoever you want for whatever reason you want. Your data is no longer in a bazillion places on the Internet, controlled by you-have-no-idea-who. It’s yours. If you want your insurance company to have access to your fitness data, you grant it through your pod. If you want your friends to have access to your vacation photos, you grant it through your pod. If you want your thermostat to share data with your air conditioner, you give both of them access through your pod.

The ideal would be for this to be completely distributed. Everyone’s pod would be on a computer they own, running on their network. But that’s not how it’s likely to be in real life. Just as you can theoretically run your own email server but in reality you outsource it to Google or whoever, you are likely to outsource your pod to those same sets of companies. But maybe pods will come standard issue in home routers. Even if you do hand your pod over to some company, it’ll be like letting them host your domain name or manage your cell phone number. If you don’t like what they’re doing, you can always move your pod—just like you can take your cell phone number and move to a different carrier. This will give users a lot more power.

I believe this will fundamentally alter the balance of power in a world where everything is a computer, and everything is producing data about you. Either IoT companies are going to enter into individual data sharing agreements, or they’ll all use the same language and protocols. Solid has a very good chance of being that protocol. And security is critical to making all of this work. Just trying to grasp what sort of granular permissions are required, and how the authentication flows might work, is mind-altering. We’re stretching pretty much every Internet security protocol to its limits and beyond just setting this up.

Building a secure technical infrastructure is largely about policy, but there’s also a wave of technology that can shift things in one direction or the other. Solid is one of those technologies. It moves the Internet away from overly-centralized power of big corporations and governments and towards more rational distributions of power; greater liberty, better privacy, and more freedom for everyone.

I’ve worked with Inrupt’s CEO, John Bruce, at both of my previous companies: Counterpane and Resilient. It’s a little weird working for a start-up that is not a security company. (While security is essential to making Solid work, the technology is fundamentally about the functionality.) It’s also a little surreal working on a project conceived and spearheaded by Tim Berners-Lee. But at this point, I feel that I should only work on things that matter to society. So here I am.

Whatever happens next, it’s going to be a really fun ride.

EDITED TO ADD (2/23): News article. HackerNews thread.

EDITED TO ADD (2/25): More press coverage.

Posted on February 21, 2020 at 2:04 PMView Comments

Sidebar photo of Bruce Schneier by Joe MacInnis.