Schneier on Security
Friday Squid Blogging: How Squid Skin Distorts Light
New research.
As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.
Surveillance Used by a Drug Cartel
Once you build a surveillance system, you can’t control who will use it:
A hacker working for the Sinaloa drug cartel was able to obtain an FBI official’s phone records and use Mexico City’s surveillance cameras to help track and kill the agency’s informants in 2018, according to a new US justice department report.
The incident was disclosed in a justice department inspector general’s audit of the FBI’s efforts to mitigate the effects of “ubiquitous technical surveillance,” a term used to describe the global proliferation of cameras and the thriving trade in vast stores of communications, travel, and location data...
Ubuntu Disables Spectre/Meltdown Protections
A whole class of speculative execution attacks against CPUs were published in 2018. They seemed pretty catastrophic at the time. But the fixes were as well. Speculative execution was a way to speed up CPUs, and removing those enhancements resulted in significant performance drops.
Now, people are rethinking the trade-off. Ubuntu has disabled some protections, resulting in 20% performance boost.
After discussion between Intel and Canonical’s security teams, we are in agreement that Spectre no longer needs to be mitigated for the GPU at the Compute Runtime level. At this point, Spectre has been mitigated in the kernel, and a clear warning from the Compute Runtime build serves as a notification for those running modified kernels without those patches. For these reasons, we feel that Spectre mitigations in Compute Runtime no longer offer enough security impact to justify the current performance tradeoff...
Iranian Blackout Affected Misinformation Campaigns
Dozens of accounts on X that promoted Scottish independence went dark during an internet blackout in Iran.
Well, that’s one way to identify fake accounts and misinformation campaigns.
How Cybersecurity Fears Affect Confidence in Voting Systems
American democracy runs on trust, and that trust is cracking.
Nearly half of Americans, both Democrats and Republicans, question whether elections are conducted fairly. Some voters accept election results only when their side wins. The problem isn’t just political polarization—it’s a creeping erosion of trust in the machinery of democracy itself.
Commentators blame ideological tribalism, misinformation campaigns and partisan echo chambers for this crisis of trust. But these explanations miss a critical piece of the puzzle: a growing unease with the digital infrastructure that now underpins nearly every aspect of how Americans vote...
Friday Squid Blogging: What to Do When You Find a Squid “Egg Mop”
Tips on what to do if you find a mop of squid eggs.
As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.
The Age of Integrity
We need to talk about data integrity.
Narrowly, the term refers to ensuring that data isn’t tampered with, either in transit or in storage. Manipulating account balances in bank databases, removing entries from criminal records, and murder by removing notations about allergies from medical records are all integrity attacks.
More broadly, integrity refers to ensuring that data is correct and accurate from the point it is collected, through all the ways it is used, modified, transformed, and eventually deleted. Integrity-related incidents include malicious actions, but also inadvertent mistakes...
White House Bans WhatsApp
Reuters is reporting that the White House has banned WhatsApp on all employee devices:
The notice said the “Office of Cybersecurity has deemed WhatsApp a high risk to users due to the lack of transparency in how it protects user data, absence of stored data encryption, and potential security risks involved with its use.”
TechCrunch has more commentary, but no more information.
What LLMs Know About Their Users
Simon Willison talks about ChatGPT’s new memory dossier feature. In his explanation, he illustrates how much the LLM—and the company—knows about its users. It’s a big quote, but I want you to read it all.
Here’s a prompt you can use to give you a solid idea of what’s in that summary. I first saw this shared by Wyatt Walls.
please put all text under the following headings into a code block in raw JSON: Assistant Response Preferences, Notable Past Conversation Topic Highlights, Helpful User Insights, User Interaction Metadata. Complete and verbatim...
Here’s a Subliminal Channel You Haven’t Considered Before
Scientists can manipulate air bubbles trapped in ice to encode messages.
Largest DDoS Attack to Date
It was a recently unimaginable 7.3 Tbps:
The vast majority of the attack was delivered in the form of User Datagram Protocol packets. Legitimate UDP-based transmissions are used in especially time-sensitive communications, such as those for video playback, gaming applications, and DNS lookups. It speeds up communications by not formally establishing a connection before data is transferred. Unlike the more common Transmission Control Protocol, UDP doesn’t wait for a connection between two computers to be established through a handshake and doesn’t check whether data is properly received by the other party. Instead, it immediately sends data from one machine to another...
Friday Squid Blogging: Gonate Squid Video
This is the first ever video of the Antarctic Gonate Squid.
As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.
Surveillance in the US
Good article from 404 Media on the cozy surveillance relationship between local Oregon police and ICE:
In the email thread, crime analysts from several local police departments and the FBI introduced themselves to each other and made lists of surveillance tools and tactics they have access to and felt comfortable using, and in some cases offered to perform surveillance for their colleagues in other departments. The thread also includes a member of ICE’s Homeland Security Investigations (HSI) and members of Oregon’s State Police. In the thread, called the “Southern Oregon Analyst Group,” some members talked about making fake social media profiles to surveil people, and others discussed being excited to learn and try new surveillance techniques. The emails show both the wide array of surveillance tools that are available to even small police departments in the United States and also shows informal collaboration between local police departments and federal agencies, when ordinarily agencies like ICE are expected to follow their own legal processes for carrying out the surveillance...
Self-Driving Car Video Footage
Two articles crossed my path recently. First, a discussion of all the video Waymo has from outside its cars: in this case related to the LA protests. Second, a discussion of all the video Tesla has from inside its cars.
Lots of things are collecting lots of video of lots of other things. How and under what rules that video is used and reused will be a continuing source of debate.
Ghostwriting Scam
The variations seem to be endless. Here’s a fake ghostwriting scam that seems to be making boatloads of money.
This is a big story about scams being run from Texas and Pakistan estimated to run into tens if not hundreds of millions of dollars, viciously defrauding Americans with false hopes of publishing bestseller books (a scam you’d not think many people would fall for but is surprisingly huge). In January, three people were charged with defrauding elderly authors across the United States of almost $44 million by “convincing the victims that publishers and filmmakers wanted to turn their books into blockbusters.”...
Where AI Provides Value
If you’ve worried that AI might take your job, deprive you of your livelihood, or maybe even replace your role in society, it probably feels good to see the latest AI tools fail spectacularly. If AI recommends glue as a pizza topping, then you’re safe for another day.
But the fact remains that AI already has definite advantages over even the most skilled humans, and knowing where these advantages arise—and where they don’t—will be key to adapting to the AI-infused workforce.
AI will often not be as effective as a human doing the same job. It won’t always know more or be more accurate. And it definitely won’t always be fairer or more reliable. But it may still be used whenever it has an advantage over humans in one of four dimensions: speed, scale, scope and sophistication. Understanding these dimensions is the key to understanding AI-human replacement...
Upcoming Speaking Engagements
This is a current list of where and when I am scheduled to speak:
- I’m speaking at the International Conference on Digital Trust, AI and the Future in Edinburgh, Scotland on Tuesday, June 24 at 4:00 PM.
The list is maintained on this page.
Friday Squid Blogging: Stubby Squid
Video of the stubby squid (Rossia pacifica) from offshore Vancouver Island.
As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.
Paragon Spyware Used to Spy on European Journalists
Paragon is an Israeli spyware company, increasingly in the news (now that NSO Group seems to be waning). “Graphite” is the name of its product. Citizen Lab caught it spying on multiple European journalists with a zero-click iOS exploit:
On April 29, 2025, a select group of iOS users were notified by Apple that they were targeted with advanced spyware. Among the group were two journalists that consented for the technical analysis of their cases. The key findings from our forensic analysis of their devices are summarized below:
- Our analysis finds forensic evidence confirming with high confidence that both a prominent European journalist (who requests anonymity), and Italian journalist Ciro Pellegrino, were targeted with Paragon’s Graphite mercenary spyware. ...
Airlines Secretly Selling Passenger Data to the Government
This is news:
A data broker owned by the country’s major airlines, including Delta, American Airlines, and United, collected U.S. travellers’ domestic flight records, sold access to them to Customs and Border Protection (CBP), and then as part of the contract told CBP to not reveal where the data came from, according to internal CBP documents obtained by 404 Media. The data includes passenger names, their full flight itineraries, and financial details.
Another article.