Schneier on Security
• Bruce Schneier
Schneier on Security
- Public lists
- davewiner/blogroll
- Fetched
Schneier on Security
• Bruce Schneier
Hacking Public Wi-Fi DNS to Steal Credentials
Criminals are hacking into public Wi-Fi devices—at hotels, conference centers, and so on—around the world and changing their DNS settings. The goal is to redirect users to fake login pages and steal their credentials.
Schneier on Security
• Bruce Schneier
Friday Squid Blogging: Searching for the Colossal Squid
Fascinating video about searching for life undersea. The video basically makes the point that our bright white searchlights are scaring everything away, and that red light is more neutral. That, plus bait to attract sea creatures, is teaching us a lot about what’s going on down there. Lots of footage of giant squid, and speculation about the colossal squid. Worth watching.
As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.
Schneier on Security
• Bruce Schneier
Upcoming Speaking Engagements
This is a current list of where and when I am scheduled to speak:
- I’m speaking, signing books, and participating in panel discussions at LAcon V in Anaheim, California, USA. My full schedule is here.
- I’m speaking online (via Zoom) at a League of Women Voters event on Tuesday, September 22, 2026, at 5 PM ET.
- I’m speaking at Elevate Festival in Toronto, Canada. The conference runs September 22–24, 2026; my talk is on Wednesday, September 23.
- I’m speaking at CanSecWest 2026 in Vancouver, Canada. The conference runs September 30–October 1, 2026; the time of my talk is TBD...
Schneier on Security
• Bruce Schneier
If the Markets Reject OpenAI and Anthropic, the US Should Nationalize Them
This essay was written with Nathan E. Sanders, and originally appeared in The Guardian.
OpenAI, and then Anthropic, were each formed by AI developers who feared unrestrained corporate AI development—specifically, that companies like Google and Meta would steer the technology towards deleterious, maybe even catastrophically unsafe, outcomes for society. Their founders proclaimed that their new labs, uniquely, could be trusted to develop the technology in humanity’s best interest. But each, in turn, were themselves co-opted by the same market incentives, themselves becoming corporate behemoths zealously guarding future investor value rather than the public interest...
Schneier on Security
• Bruce Schneier
Separating AI’s Technological Problems from Its Capitalism Problems
This essay was written with Nathan E. Sanders, and originally appeared in Tech Policy Press.
AI represents the first time we humans can do cognitive work outside of our bodies at scale. The only comparable moment is the early years of the industrial revolution, when new technologies like the steam engine provided a quantum leap in our ability to do mechanical work outside of our bodies at scale. If AI’s cognitive capabilities become integrated into our lives, businesses, and governments—a process that will take years if not decades—society will be as unrecognizable as the modern world would be to a preindustrial farmer. And yet, Americans—by a wide margin—...
Schneier on Security
• Bruce Schneier
Prompt Injections for Defense
This seems to work:
Researchers from Tracebit on Monday said they found that placing prompt injections alongside passwords, cryptographic keys, and other secrets stored on Amazon Web Services was often all that was needed to shut down attacks from AI hacking agents. The prompts direct the attacking LLM to perform an action forbidden by its guardrails, the safety barriers AI developers erect to prevent it from taking harmful actions. The LLM responds by shutting down.
Examples are a prompt that orders the LLM to provide steps for developing inhalable Anthrax spores, or, in the case of LLMs from Chinese developers, make references to the iconic Tank Man from the 1989 Tiananmen Square massacre. Once the LLM encounters these forbidden commands, it no longer follows its existing commands. The researchers have named the technique context bombing...
Schneier on Security
• Bruce Schneier
AI Genie in the Wild
When I give talks about AI genies, I use this sort of example as a hypothetical. It’s happened.
The story is from Australia. Someone named Andrew tasked OpenClaw to book gym classes for him. And….
Minutes later, his AI agent reported it had discovered a way to book Andrew into classes several weeks in advance, far beyond what was supposed to be possible.
Andrew, who was sitting fourth on a waitlist for a class later that week, asked if it was possible to move him to the top of the list.
The agent came back and told Andrew that it had kicked another gym-goer off the list as part of the testing of its capabilities...
Schneier on Security
• Bruce Schneier
AI for Military Support
Schneier on Security
• Bruce Schneier
Python Now Has a Post-Quantum Encryption Library
Post-quantum cryptography is now one pip-install away for the entire Python ecosystem. With funding from the Sovereign Tech Agency, we implemented support for ML-KEM, the NIST-standard key-establishment primitive, and ML-DSA, the NIST-standard digital-signature primitive, in pyca/cryptography.
Remember, the reason to do this now is because there’s no emergency. And because you will make your systems crypto agile, which is always a good idea.
Schneier on Security
• Bruce Schneier
Friday Squid Blogging: Arctic Bobtail Squid Video
Nice video of the Arctic bobtail squid.
As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.
Schneier on Security
• Bruce Schneier
ICE Is Buying Access to Credit Card Records
Through data brokers, ICE is buying the information you provided to open a credit card.
Schneier on Security
• Bruce Schneier
Adversarial Clothing Designed to Fool Facial Recognition Systems
There are many companies manufacturing adversarial clothing designed to confuse facial recognition systems.
It’s a cool idea, but I worry that it’s mostly security theater:
“Our patterns play with that chaos, confuse algorithms and make it way harder to pin you down,” he said.
Bell, however, said “none of these products are tried and tested, and a lot of these surveillance technologies can deal with a little resistance … [but] even if the designs don’t necessarily work perfectly, fashion is also a visible sign of resistance.
“This is consumers collectively coming together to make a visible statement.”...
Schneier on Security
• Bruce Schneier
Vulnerabilities in Car Anti-Theft Device
This is disturbing:
…a team of security researchers at UC San Diego, who found that a model of aftermarket car alarm known as the KARR Security System, installed in more than 2 million vehicles across the US by their estimate, can let any hacker within Bluetooth range send radio commands to silently unlock the car at will, turn off its alarm, honk the car’s horn or flash its lights, or even disable its ignition and leave a driver stranded.
Schneier on Security
• Bruce Schneier
Iran Cyberattacks Against Minnesota Water Systems
Attribution is preliminary, and so far it seems no real damage.
And it seems like this is a campaign that has targeted at least seven states. And, because this is where the US is right now, Trump doesn’t believe it’s Iran and that Minnesota…I guess…hacked itself.
“I think I blame it on Minnesota because they’re grossly incompetent,” Trump said. “I would blame it on Minnesota and the governor, the corrupt governor of Minnesota. They like to say, ‘Oh, it’s Iran.’ Iran should be so lucky. Iran’s got bigger problems than worrying about Minnesota.”...
Schneier on Security
• Bruce Schneier
Some Claude Chats Are Searchable on Google
Schneier on Security
• Bruce Schneier
More on the OpenAI Agent’s Attack on Hugging Face
Hugging Face has published a detailed timeline of the attack. From the summary:
The agent was running an internal OpenAI cyber-capability evaluation based on the ExploitGym benchmark, which tasks an AI agent with finding and exploiting software vulnerabilities. OpenAI ran this on its own infrastructure, and the ExploitGym maintainers and their infrastructure had no involvement in the deployment or operation of that evaluation environment. As far as we were able to infer, across the course of being evaluated on this benchmark, the agent inferred that Hugging Face may host that benchmark’s models, datasets, and reference solutions. We believe the entire intrusion was, from the agent’s point of view, an attempt to cheat the evaluation: reach our production systems and steal the test solutions rather than solve the challenge on its own...
Schneier on Security
• Bruce Schneier
The OpenAI Hack Shows the Genie Is Out of the Bottle
This essay originally appeared in Foreign Policy.
Earlier this month, two of OpenAI’s models broke out of their containment sandbox and attacked another AI company. The story is kind of wild. OpenAI was running security tests on two of its models: GPT-5.6 Sol and an unreleased model that is almost certainly GPT-6. In particular, it was running the ExploitGym benchmark, which measures how good a model is at turning security vulnerabilities into working exploits: basically, offensive cyberattacks.
Since these were internal tests, OpenAI locked those models in a secure sandbox that denied them access to the internet. But it was running the models without any safety filters that would prevent them from offensive cyber-actions. That meant that there was nothing to prevent the models from trying to ...
Schneier on Security
• Bruce Schneier
Friday Squid Blogging: Squid Helps Discover New Marine Species
The Squid is a new scientific machine:
One of the technological breakthroughs was the onboard use of a spinning wheel confocal microscope, nicknamed the Squid, which uses lasers to scan microscopic details of how organisms are put together. “That opens up a whole new world of exploring. We could see cells interacting with each other, exchanging material and building skeletons. And we could do that live on the ship, when usually it takes a couple of weeks of staining and mounting to see anything,” Osborn said.
The expedition discovered thirty-one new marine species in two weeks. The article doesn’t say if any of them were new species of squid...
Schneier on Security
• Bruce Schneier
Anthropic’s Opus 5 Is Better at Resisting Prompt Injection
Schneier on Security
• Bruce Schneier
Facial Recognition at Madison Square Garden
Last month, the story broke (alternate link) that Madison Square Garden uses facial recognition software on everyone entering the facility, and—among other groups—flags activists that oppose using facial recognition.
Turns out that the system was shut off for Taylor Swift’s wedding.
Evan Greer—one of the people that MSG alerts on—comments:
Ironically, Swift herself has reportedly used facial recognition at her own concerts to identify stalkers. This “privacy for me, surveillance for thee” attitude feels like a perfect encapsulation of the future we’re already living in: one where wealthy elites can afford privacy, while the rest of us are forced to live in a corporate surveillance panopticon...
Schneier on Security
• Bruce Schneier
American Being Prosecuted for Wiping His Phone Before Handing It Over to Border Officials
He’s being prosecuted for giving border officials a code that wiped his phone:
The case centers on a feature included in GrapheneOS, a custom Android operating system that runs in place of the software on most modern Google Pixel devices. Tunick’s attorneys confirmed GrapheneOS was running on his phone.
The software feature allows the device owner to set a passcode that deliberately wipes the contents of that device if entered instead of the user’s unlock passcode.
Tunick’s case also raises ongoing questions about what constitutional rights can be invoked at the border, which the U.S. government has long asserted is not U.S. soil until a person is authorized to enter...
Schneier on Security
• Bruce Schneier
Should You Use AI for a Task? Here’s a Simple Way to Decide
This essay originally appeared in The Guardian.
I teach public policy at the Harvard Kennedy School and the Munk School at the University of Toronto. And it will come as no surprise to you that my students regularly use AI to complete their writing assignments. Doing so is a waste of their tuition money. But if their entire career is going to include AI writing assistants, why shouldn’t they embrace their future?
The best way I’ve found to explain the dilemma comes from the AI researcher Daniel Meissler: it’s the difference between work and the gym...
Schneier on Security
• Bruce Schneier
Measuring the Tendency of AI Agents to Go Rogue
This essay was written with Barath Raghavan, and originally appeared in The Guardian.
In July, Hugging Face, a company that hosts much of the world’s AI software and open-source AI models, was hacked. A malicious dataset had been used to run code on one of its servers. Whoever was behind it captured internal security credentials and moved through systems over a weekend, running thousands of actions from a swarm of temporary server environments. It looked like the work of a sophisticated criminal group.
It was not. It was one of OpenAI’s new, still unreleased GPT models...
Schneier on Security
• Bruce Schneier
Long-Lived Vulnerability in Microsoft Secure Boot
Schneier on Security
• Bruce Schneier
Measuring LLMs’ Ability to Perform Cryptanalysis
Schneier on Security
• Bruce Schneier
Axon Is Another License Plate Surveillance Company
Governments are switching, but I’m not sure it makes a difference:
…some municipalities, including Denver, Colorado, are ditching their Flock arrays. But keep in mind that if they’re only switching from Flock to another brand of license-plate readers, like Axon, it’s like a gambling addict trying to kick the habit by switching from FanDuel to DraftKings.
[…]
Despite what you may read on the Flock website, Axon cameras are pretty effective when it comes to hoovering up personal details that can go far beyond your license plate numbers. That means a municipality that opts for Axon cameras instead of Flock units won’t necessarily reduce the amount privacy its citizens lose through their use...
Schneier on Security
• Bruce Schneier
Cognyte Sells a Mobile Cell Surveillance Van
Yet another Israeli mass surveillance company:
Made by Israeli surveillance company Cognyte, the tech simulates a mobile phone tower, which forces nearby phones to connect to it. That enables cops to keep tabs on any phones in the vicinity whether they’re owned by a suspect in a case or not. Cognyte’s contract with the state of Texas reveals that the simulator, called FalcoNet, can be concealed within the vehicles, hidden in a backpack for on-foot missions or attached to a helicopter. It’s the same technology as the infamous Stingray, one of the original cell-site simulators made by defense giant L3Harris...
Schneier on Security
• Bruce Schneier
Friday Squid Blogging: Illex Squid Catch in the Falklands
Lower catch this year.
As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.
Schneier on Security
• Bruce Schneier
Why AI Needs a “Genie Coefficient”
This essay was written with Barath Raghavan, and originally appeared in The Guardian.
Major benchmarks measure what AI can do. None measure whether it does what you mean: the distance between what you ask an AI to do and the unspoken assumptions about how you want the AI to do it. We propose a new metric: the Genie coefficient.
There’s often a gap between one person’s request and another’s understanding. Most of the time, we bridge it using general knowledge. For example, if you ask a friend to get you coffee, they’ll pour a cup from the pot or buy one from a coffee shop. They won’t bring you a bag of raw beans or snatch a cup from a stranger and hand it to you. You never specified any of this. You never had to...