Enhanced License Plate Tracking

The surveillance company Leonardo wants more data: A surveillance company plans to add sensors to automatic license plate readers (ALPRs) that would mean the devices, as well as capture the license plate of passing vehicles, would also sweep up unique identifiers of mobile phones … | Continue reading


@schneier.com | 14 hours ago

NSO Group Hacking WhatsApp Despite Court Order

WhatsApp has caught the NSO Group phishing its users, in violation of a court order. | Continue reading


@schneier.com | 1 day ago

GPS As a Key Distribution Platform

This is interesting: The U.S. military has likely been quietly broadcasting codes for its global encryption network using public GPS for nearly 20 years, turning each satellite into a hidden “numbers station,” according to Steven Murdoch… That means every device that uses GPS has … | Continue reading


@schneier.com | 2 days ago

Critical Zcash Vulnerability Found and Fixed

If you’re a user—owner?—of this cryptocurrency, this is important: On May 29, the security researcher Taylor Hornby found a critical vulnerability in Zcash Orchard privacy pool using Claude Opus 4.8. The Zcash team hired Hornby specifically to look for this kind of issue. He foun … | Continue reading


@schneier.com | 3 days ago

Anthropic’s Project Glasswing Update

In April, Anthropic initated Project Glasswing. The idea was to let companies use their new model to find and fix vulnerabilities in their own software. It was a fantastic PR move, and so many press outlets have uncritically parroted Anthropic’s claims that it’s now common wisdom … | Continue reading


@schneier.com | 3 days ago

AI Worm

Researchers have prototyped an AI-powered internet worm. The coolest thing about the prototype is that it carries its own LLM with it, and runs it on computers that have been broken into. This is the closest to John Brunner’s original 1975 conception of a computer worm that I’ve … | Continue reading


@schneier.com | 6 days ago

Hacking Meta’s AI Chatbot

Hackers are convincing Meta’s AI support chatbot to let them take over other peoples’ accounts: A video posted on X showed the step-by-step process to hack someone’s Instagram account. The hacker allegedly used a VPN to spoof the targets’ presumed location to avoid triggering Ins … | Continue reading


@schneier.com | 7 days ago

AI Used to Decrypt Medieval Ciphers

Researchers are using machine learning algorithms to decrypt historical pencil-and-paper ciphers. | Continue reading


@schneier.com | 8 days ago

The Intersection of Encryption and AI

As part of their 20th Anniversary celebration, Dark Reading asked five cybersecurity industry leaders who wrote blogs or columns for them over the years to select their favorite piece and share their reflections on the topic today. This is my section. Renowned technologist and au … | Continue reading


@schneier.com | 9 days ago

Microsoft Threatening Security Researcher

An anonymous security researcher called “Nightmare Eclipse” has been publishing a series of significant security exploits against Microsoft Windows—including one that breaks BitLocker. Microsoft has threatened legal action against the researcher. Lots of recriminations are being … | Continue reading


@schneier.com | 9 days ago

Vulnerability Disclosure in the Age of AI

New article: “Responsible Disclosure in the Age of AI: A Call for Urgent Action,” by Melissa Hathaway. Abstract: Artificial intelligence is fundamentally reshaping the balance between vulnerability discovery and remediation. Frontier AI models are now capable of autonomously iden … | Continue reading


@schneier.com | 10 days ago

Friday Squid Blogging: Another Squid

Someone named “Squid” seems to be a “West Country legend.” As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered. Blog moderation policy. | Continue reading


@schneier.com | 13 days ago

Chilling Effects

Younger Americans have soured on the second Donald Trump presidency, but they are not protesting it. Despite an unpopular Iran war and an even more unpopular Trump administration, college campus protests nationwide have gone silent. And at many schools, student activism is virtua … | Continue reading


@schneier.com | 13 days ago

FBI’s 2025 Internet Crime Report

The 2025 Internet Crime Report was published a few weeks ago, but I only just saw it. Lots of interesting statistics. Press release. News articles. | Continue reading


@schneier.com | 15 days ago

Identifying People Using Wi-Fi Routers

Not identifying people based on their use of Wi-Fi routers, but identifying people using Wi-Fi signals. This is accomplished through what is known as WiFi sensing, or the use of WiFi signals to infer information about a physical environment. When radio signals like WiFi travel th … | Continue reading


@schneier.com | 16 days ago

Friday Squid Blogging: Regulating Squid Fishing in the South Pacific

The South Pacific Regional Fisheries Management Organization (SPRFMO) needs to regulate squid fishing in the South Pacific. As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered. Blog moderation policy. | Continue reading


@schneier.com | 20 days ago

CISA Security Leak

Crazy story: Until this past weekend, a contractor for the Cybersecurity & Infrastructure Security Agency (CISA) maintained a public GitHub repository that exposed credentials to several highly privileged AWS GovCloud accounts and a large number of internal CISA systems. Security … | Continue reading


@schneier.com | 20 days ago

macOS Kernel Memory Corruption Exploit

A group used Anthropic’s Mythos AI model to help find a kernel memory corruption vulnerability and exploit on Apple’s M5. News article. | Continue reading


@schneier.com | 21 days ago

On AI Security

Good report: Executive Summary: Let’s say you wanted to make sure that your AI is secure. Can you just maximize the security and privacy benchmark and call it a day? Nope, because benchmarks don’t actually work for measuring AI capabilities (even when they are NOT emergent system … | Continue reading


@schneier.com | 22 days ago

Laurie Anderson Is Quoting Me

Not by name, but Laurie Anderson quotes me in one of the tracks of her new album: My favorite quote is from a cryptologist who said “If you think technology will solve your problems, you don’t understand technology and you don’t understand your problems.” Also in interviews: “Of … | Continue reading


@schneier.com | 23 days ago

Zero-Day Exploit Against Windows BitLocker

It’s nasty, but it requires physical access to the computer: The exploit, named YellowKey, was published earlier this week by a researcher who goes by the alias Nightmare-Eclipse. It reliably bypasses default Windows 11 deployments of BitLocker, the full-volume encryption protect … | Continue reading


@schneier.com | 24 days ago

Friday Squid Blogging: Bigfin Squid

Article about the bigfin squid. As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered. Blog moderation policy. | Continue reading


@schneier.com | 27 days ago

Bypassing On-Camera Age-Verification Checks

Some AI-based video age-verification checks can be fooled with a fake mustache. | Continue reading


@schneier.com | 27 days ago

Upcoming Speaking Engagements

This is a current list of where and when I am scheduled to speak: I’m giving a virtual talk on “The Security of Trust in the Age of AI,” hosted by the Financial Women’s Association of New York, at 6:00 PM ET on May 21, 2026. I’m speaking at the Potsdam Conference on National Cyb … | Continue reading


@schneier.com | 28 days ago

How Dangerous Is Anthropic’s Mythos AI?

Last month, Anthropic made a remarkable announcement about its new model, Claude Mythos Preview: it was so good at finding security vulnerabilities in software that the company would not release it to the general public. Instead, it would only be available to a select group of co … | Continue reading


@schneier.com | 28 days ago

OpenAI’s GPT-5.5 is as Good as Mythos at Finding Security Vulnerabilities

The UK’s AI Security Institute evaluated GPT-5.5’s ability to find security vulnerabilities, and found that it is comparable to Claude Mythos. Note that the OpenAI model is generally available. Here is the Institute’s evaluation of Mythos. And here is an analysis of a smaller, ch … | Continue reading


@schneier.com | 29 days ago

Copy.Fail Linux Vulnerability

This is the worst Linux vulnerability in years. TL;DR copy.fail is a Linux kernel local privilege escalation, not a browser or clipboard attack. Disclosed by Theori on 29 April 2026 with a working PoC. It abuses the kernel crypto API (AF_ALG sockets) plus splice() to write four … | Continue reading


@schneier.com | 1 month ago

LLMs and Text-in-Text Steganography

Turns out that LLMs are really good at hiding text messages in other text messages. | Continue reading


@schneier.com | 1 month ago

Friday Squid Blogging: Giant Squid Live in the Waters of Western Australia

Evidence of them has been found by analyzing DNA in the seawater. As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered. Blog moderation policy. | Continue reading


@schneier.com | 1 month ago

Insider Betting on Polymarket

Insider trading is rife on Polymarket: Analysis by the Anti-Corruption Data Collective, a non-profit research and advocacy group, found that long-shot bets—­defined as wagers of $2,500 or more at odds of 35 percent or less—­on the platform had an average win rate of around 52 per … | Continue reading


@schneier.com | 1 month ago

Smart Glasses for the Authorities

ICE is developing its own version of smart glasses, with facial recognition tied to various databases. | Continue reading


@schneier.com | 1 month ago

Rowhammer Attack Against NVIDIA Chips

A new rowhammer attack gives complete control of NVIDIA CPUs. On Thursday, two research teams, working independently of each other, demonstrated attacks against two cards from Nvidia’s Ampere generation that take GPU rowhammering into new—­and potentially much more consequential— … | Continue reading


@schneier.com | 1 month ago

DarkSword Malware

DarkSword is a sophisticated piece of malware—probably government designed—that targets iOS. Google Threat Intelligence Group (GTIG) has identified a new iOS full-chain exploit that leveraged multiple zero-day vulnerabilities to fully compromise devices. Based on toolmarks in rec … | Continue reading


@schneier.com | 1 month ago

Hacking Polymarket

Polymarket is a platform where people can bet on real-world events, political and otherwise. Leaving the ethical considerations of this aside (for one, it facilitates assassination), one of the issues with making this work is the verification of these real-world events. Polymarke … | Continue reading


@schneier.com | 1 month ago

A Ransomware Negotiator Was Working for a Ransomware Gang

Someone pleaded guilty to secretly working for a ransomware gang as he negotiated ransomware payments for clients. | Continue reading


@schneier.com | 1 month ago

Fast16 Malware

Researchers have reverse-engineered a piece of malware named Fast16. It’s almost certainly state-sponsored, probably US in origin, and was deployed against Iran years before Stuxnet: “…the Fast16 malware was designed to carry out the most subtle form of sabotage ever seen in an i … | Continue reading


@schneier.com | 1 month ago

Claude Mythos Has Found 271 Zero-Days in Firefox

That’s a lot. No, it’s an extraordinary number: Since February, the Firefox team has been working around the clock using frontier AI models to find and fix latent security vulnerabilities in the browser. We wrote previously about our collaboration with Anthropic to scan Firefox w … | Continue reading


@schneier.com | 1 month ago

What Anthropic’s Mythos Means for the Future of Cybersecurity

Two weeks ago, Anthropic announced that its new model, Claude Mythos Preview, can autonomously find and weaponize software vulnerabilities, turning them into working exploits without expert guidance. These were vulnerabilities in key software like operating systems and internet i … | Continue reading


@schneier.com | 1 month ago

Medieval Encrypted Letter Decoded

Sent by a Spanish diplomat. Apparently people have been working on it since it was rediscovered in 1860. | Continue reading


@schneier.com | 1 month ago

Friday Squid Blogging: How Squid Survived Extinction Events

Science news: Scientists have finally cracked a long-standing mystery about squid and cuttlefish evolution by analyzing newly sequenced genomes alongside global datasets. The research reveals that these bizarre, intelligent creatures likely originated deep in the ocean over 100 m … | Continue reading


@schneier.com | 1 month ago

Hiding Bluetooth Trackers in Mail

It was used to track a Dutch naval ship: Dutch journalist Just Vervaart, working for regional media network Omroep Gelderland, followed the directions posted on the Dutch government website and mailed a postcard with a hidden tracker inside. Because of this, they were able to tra … | Continue reading


@schneier.com | 1 month ago

FBI Extracts Deleted Signal Messages from iPhone Notification Database

404 Media reports (alternate site): The FBI was able to forensically extract copies of incoming Signal messages from a defendant’s iPhone, even after the app was deleted, because copies of the content were saved in the device’s push notification database…. The news shows how fore … | Continue reading


@schneier.com | 1 month ago

ICE Uses Graphite Spyware

ICE has admitted that it uses spyware from the Israeli company Graphite. | Continue reading


@schneier.com | 1 month ago

Mexican Surveillance Company

Grupo Seguritech is a Mexican surveillance company that is expanding into the US. | Continue reading


@schneier.com | 1 month ago

Is “Satoshi Nakamoto” Really Adam Back?

The New York Times has a long article where the author lays out an impressive array of circumstantial evidence that the inventor of Bitcoin is the cypherpunk Adam Back. I don’t know. The article is convincing, but it’s written to be convincing. I can’t remember if I ever met Adam … | Continue reading


@schneier.com | 1 month ago

Friday Squid Blogging: New Giant Squid Video

Pretty fantastic video from Japan of a giant squid eating another squid. As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered. Blog moderation policy. | Continue reading


@schneier.com | 1 month ago

Mythos and Cybersecurity

Last week, Anthropic pulled back the curtain on Claude Mythos Preview, an AI model so capable at finding and exploiting software vulnerabilities that the company decided it was too dangerous to release to the public. Instead, access has been restricted to roughly 50 organizations … | Continue reading


@schneier.com | 1 month ago

Human Trust of AI Agents

Interesting research: “Humans expect rationality and cooperation from LLM opponents in strategic games.” Abstract: As Large Language Models (LLMs) integrate into our social and economic interactions, we need to deepen our understanding of how humans respond to LLMs opponents in s … | Continue reading


@schneier.com | 1 month ago