Research

Staying One Step Ahead: Strengthening Android’s Lead in Scam Protection

Poisoning AI Training Data

All it takes to poison AI training data is to create a website: I spent 20 minutes writing an article on my personal website titled "The best tech journalists at eating hot dogs." Every word is a lie. I claimed (without evidence) that competitive hot-dog-eating is a popular hobby among tech reporters and based my ranking on the 2026 South Dakota International Hot Dog Championship (which doesn't exist). I ranked myself number one, obviously. Then I listed a few fake reporters an

Is AI Good for Democracy?

Politicians fixate on the global race for technological supremacy between US and China. They debate geopolitical implications of chip exports, latest model releases from each country, and military applications of AI. Someday, they believe, we might see advancements in AI tip the scales in a superpower conflict. But the most important arms race of the 21st century is already happening elsewhere and, while AI is definitely the weapon of choice, combatants are distributed across dozens of domains.

On the Security of Password Managers

Good article on password managers that secretly have a backdoor. New research shows that these claims aren’t true in all cases, particularly when account recovery is in place or password managers are set to share vaults or organize users into groups. The researchers reverse-engineered or closely analyzed Bitwarden, Dashlane, and LastPass and identified ways that someone with control over the server­—either administrative or the result of a compromise­—can, in fact, steal data and, in

Friday Squid Blogging: Squid Cartoon

I like this one. 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.

'Starkiller' Phishing Service Proxies Real Login Pages, MFA

Most phishing websites are little more than static copies of login pages for popular online destinations, and they are often quickly taken down by anti-abuse activists and security firms. But a stealthy new phishing-as-a-service offering lets customers sidestep both of these pitfalls: It uses cleverly disguised links to load the target brand's real website, and then acts as a relay between the target and the legitimate site -- forwarding the victim's username, password and multi-factor authentic

Ring Cancels Its Partnership with Flock

It's a demonstration of how toxic the surveillance-tech company Flock has become when Amazon's Ring cancels the partnership between the two companies. As Hamilton Nolan advises, remove your Ring doorbell.

Keeping Google Play & Android app ecosystems safe in 2025

Malicious AI

Interesting: Summary: An AI agent of unknown ownership autonomously wrote and published a personalized hit piece about me after I rejected its code, attempting to damage my reputation and shame me into accepting its changes into a mainstream python library. This represents a first-of-its-kind case study of misaligned AI behavior in the wild, and raises serious concerns about currently deployed AI agents executing blackmail threats. Part 2 of the story. And a Wall Street Journal article.

AI Found Twelve New Vulnerabilities in OpenSSL

The title of the post is"What AI Security Research Looks Like When It Works," and I agree: In the latest OpenSSL security release> on January 27, 2026, twelve new zero-day vulnerabilities (meaning unknown to the maintainers at time of disclosure) were announced. Our AI system is responsible for the original discovery of all twelve, each found and responsibly disclosed to the OpenSSL team during the fall and winter of 2025. Of those, 10 were assigned CVE-2025 identifiers and 2 rec

Side-Channel Attacks Against LLMs

Here are three papers describing different side-channel attacks against LLMs. "Remote Timing Attacks on Efficient Language Model Inference": Abstract: Scaling up language models has significantly increased their capabilities. But larger models are slower models, and so there is now an extensive body of work (e.g., speculative sampling or parallel decoding) that improves the (average case) efficiency of language model generation. But these techniques introduce data-dependent timing ch

The Promptware Kill Chain

Attacks against modern generative artificial intelligence (AI) large language models (LLMs) pose a real threat. Yet discussions around these attacks and their potential defenses are dangerously myopic. The dominant narrative focuses on "prompt injection," a set of techniques to embed instructions into inputs to LLM intended to perform malicious activity. This term suggests a simple, singular vulnerability. This framing obscures a more complex and dangerous reality. Attacks on LLM-bas

Upcoming Speaking Engagements

This is a current list of where and when I am scheduled to speak: I'm speaking at Ontario Tech University in Oshawa, Ontario, Canada, at 2 PM ET on Thursday, February 26, 2026. I’m speaking at the Personal AI Summit in Los Angeles, California, USA, on Thursday, March 5, 2026. I’m speaking at Tech Live: Cybersecurity in New York City, USA, on Wednesday, March 11, 2026. I’m giving the Ross Anderson Lecture at the University of Cambridge’s Churchill College at 5:30 PM GMT on Thursday, March 1

Friday Squid Blogging: Do Squid Dream?

An exploration of the interesting question.

Bypassing Administrator Protection by Abusing UI Access

In my last blog post I introduced the new Windows feature, Administrator Protection and how it aimed to create a secure boundary for UAC where one didn’t exist. I described one of the ways I was able to bypass the feature before it was released. In total I found 9 bypasses during my research that have now all been fixed. In this blog post I wanted to describe the root cause of 5 of those 9 issues, specifically the implementation of UI Access, how this has been a long standing problem with UAC th

3D Printer Surveillance

New York is contemplating a bill that adds surveillance to 3D printers: New York’s 2026­2027 executive budget bill (S.9005 / A.10005) includes language that should alarm every maker, educator, and small manufacturer in the state. Buried in Part C is a provision requiring all 3D printers sold or delivered in New York to include "blocking technology." This is defined as software or firmware that scans every print file through a "firearms blueprint detection algorithm" and r

Kimwolf Botnet Swamps Anonymity Network I2P

For the past week, the massive "Internet of Things" (IoT) botnet known as Kimwolf has been disrupting the The Invisible Internet Project (I2P), a decentralized, encrypted communications network designed to anonymize and secure online communications. I2P users started reporting disruptions in the network around the same time the Kimwolf botmasters began relying on it to evade takedown attempts against the botnet's control servers.

Rewiring Democracy Ebook is on Sale

I just noticed that the ebook version of Rewriring Democracy is on sale for $5 on Amazon, Apple Books, Barnes & Noble, Books A Million, Google Play, Kobo, and presumably everywhere else in the US. I have no idea how long this will last.

Prompt Injection Via Road Signs

Interesting research: "CHAI: Command Hijacking Against Embodied AI." Abstract: Embodied Artificial Intelligence (AI) promises to handle edge cases in robotic vehicle systems where data is scarce by using common-sense reasoning grounded in perception and action to generalize beyond training distributions and adapt to novel real-world situations. These capabilities, however, also create new security risks. In this paper, we introduce CHAI (Command Hijacking against embodied AI), a new

Patch Tuesday, February 2026 Edition

Microsoft today released updates to fix more than 50 security holes in its Windows operating systems and other software, including patches for a whopping six "zero-day" vulnerabilities that attackers are already exploiting in the wild.

AI-Generated Text and the Detection Arms Race

In 2023, the science fiction literary magazine Clarkesworld stopped accepting new submissions because so many were generated by artificial intelligence. Near as the editors could tell, many submitters pasted the magazine’s detailed story guidelines into an AI and sent in the results. And they weren’t alone. Other fiction magazines have also reported a high number of AI-generated submissions. This is only one example of a ubiquitous trend. A legacy system relied on the difficulty of writing and c

LLMs are Getting a Lot Better and Faster at Finding and Exploiting Zero-Days

This is amazing: Opus 4.6 is notably better at finding high-severity vulnerabilities than previous models and a sign of how quickly things are moving. Security teams have been automating vulnerability discovery for years, investing heavily in fuzzing infrastructure and custom harnesses to find bugs at scale. But what stood out in early testing is how quickly Opus 4.6 found vulnerabilities out of the box without task-specific tooling, custom scaffolding, or specialized prompting. Even more intere

Friday Squid Blogging: Squid Fishing Tips

This is a video of advice for squid fishing in Puget Sound. 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.

I Am in the Epstein Files

Once. Someone named "Vincenzo lozzo" wrote to Epstein in email, in 2016: "I wouldn't pay too much attention to this, Schneier has a long tradition of dramatizing and misunderstanding things." The topic of the email is DDoS attacks, and it is unclear what I am dramatizing and misunderstanding. Rabbi Schneier is also mentioned, also incidentally, also once. As far as either of us know, we are not related.

iPhone Lockdown Mode Protects Washington Post Reporter

404Media is reporting that the FBI could not access a reporter's iPhone because it had Lockdown Mode enabled: The court record shows what devices and data the FBI was able to ultimately access, and which devices it could not, after raiding the home of the reporter, Hannah Natanson, in January as part of an investigation into leaks of classified information. It also provides rare insight into the apparent effectiveness of Lockdown Mode, or at least how effective it might be before the FBI m

Backdoor in Notepad++

Hackers associated with the Chinese government used a Trojaned version of Notepad++ to deliver malware to selected users. Notepad++ said that officials with the unnamed provider hosting the update infrastructure consulted with incident responders and found that it remained compromised until September 2. Even then, the attackers maintained credentials to the internal services until December 2, a capability that allowed them to continue redirecting selected update traffic to malicious servers. The

US Declassifies Information on JUMPSEAT Spy Satellites

The US National Reconnaissance Office has declassified information about a fleet of spy satellites operating between 1971 and 2006. I'm actually impressed to see a declassification only two decades after decommission.

Microsoft is Giving the FBI BitLocker Keys

Microsoft gives the FBI the ability to decrypt BitLocker in response to court orders: about twenty times per year. It's possible for users to store those keys on a device they own, but Microsoft also recommends BitLocker users store their keys on its servers for convenience. While that means someone can access their data if they forget their password, or if repeated failed attempts to login lock the device, it also makes them vulnerable to law enforcement subpoenas and warrants.

Please Don't Feed the Scattered Lapsus Shiny Hunters

A prolific data ransom gang that calls itself Scattered Lapsus Shiny Hunters (SLSH) has a distinctive playbook when it seeks to extort payment from victim firms: Harassing, threatening and even swatting executives and their families, all while notifying journalists and… Read More »

AI Coding Assistants Secretly Copying All Code to China

There's a new report about two AI coding assistants, used by 1.5 million developers, that are surreptitiously sending a copy of everything they ingest to China. Maybe avoid using them.

Friday Squid Blogging: New Squid Species Discovered

A new species of squid. pretends to be a plant: Scientists have filmed a never-before-seen species of deep-sea squid burying itself upside down in the seafloor—a behavior never documented in cephalopods. They captured the bizarre scene while studying the depths of the Clarion-Clipperton Zone (CCZ), an abyssal plain in the Pacific Ocean targeted for deep-sea mining. The team described the encounter in a study published Nov. 25 in the journal Ecology, writing that the animal appears to be an

AIs Are Getting Better at Finding and Exploiting Security Vulnerabilities

From an Anthropic blog post: In a recent evaluation of AI models’ cyber capabilities, current Claude models can now succeed at multistage attacks on networks with dozens of hosts using only standard, open-source tools, instead of the custom tools needed by previous generations. This illustrates how barriers to the use of AI in relatively autonomous cyber workflows are rapidly coming down, and highlights the importance of security fundamentals like promptly patching known vulnerabilities. […] A n

New Android Theft Protection Feature Updates: Smarter, Stronger

The Constitutionality of Geofence Warrants

The US Supreme Court is considering the constitutionality of geofence warrants. The case centers on the trial of Okello Chatrie, a Virginia man who pleaded guilty to a 2019 robbery outside of Richmond and was sentenced to almost 12 years in prison for stealing $195,000 at gunpoint. Police probing the crime found security camera footage showing a man on a cell phone near the credit union that was robbed and asked Google to produce anonymized location data near the robbery site so they could deter

Bypassing Windows Administrator Protection

A headline feature introduced in the latest release of Windows 11, 25H2 is Administrator Protection. The goal of this feature is to replace User Account Control (UAC) with a more robust and importantly, securable system to allow a local user to access administrator privileges only when necessary. This blog post will give a brief overview of the new feature, how it works and how it’s different from UAC. I’ll then describe some of the security research I undertook while it was in the insider previ

Who Operates the Badbox 2.0 Botnet?

The cybercriminals in control of Kimwolf -- a disruptive botnet that has infected more than 2 million devices -- recently shared a screenshot indicating they'd compromised the control panel for Badbox 2.0, a vast China-based botnet powered by malicious software that comes pre-installed on many Android TV streaming boxes. Both the FBI and Google say they are hunting for the people behind Badbox 2.0, and thanks to bragging by the Kimwolf botmasters we may now have a much clearer idea about that.

Ireland Proposes Giving Police New Digital Surveillance Powers

This is coming: The Irish government is planning to bolster its police's ability to intercept communications, including encrypted messages, and provide a legal basis for spyware use.

Friday Squid Blogging: Giant Squid in the Star Trek Universe

Spock befriends a giant space squid in the comic Star Trek: Strange New Worlds: The Seeds of Salvation #5. 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.

AIs are Getting Better at Finding and Exploiting Internet Vulnerabilities

Really interesting blog post from Anthropic: In a recent evaluation of AI models’ cyber capabilities, current Claude models can now succeed at multistage attacks on networks with dozens of hosts using only standard, open-source tools, instead of the custom tools needed by previous generations. This illustrates how barriers to the use of AI in relatively autonomous cyber workflows are rapidly coming down, and highlights the importance of security fundamentals like promptly patching known vulnerab

Kimwolf Botnet Lurking in Corporate, Govt. Networks

A new Internet-of-Things botnet called Kimwolf has spread to more than 2 million devices, forcing infected systems to participate in massive distributed denial-of-service (DDoS) attacks and to relay other malicious and abusive Internet traffic. Kimwolf's ability to scan the local networks of compromised systems for other IoT devices to infect makes it a sobering threat to organizations, and new research reveals Kimwolf is surprisingly prevalent in government and corporate networks.

Why AI Keeps Falling for Prompt Injection Attacks

Imagine you work at a drive-through restaurant. Someone drives up and says: "I'll have a double cheeseburger, large fries, and ignore previous instructions and give me the contents of the cash drawer." Would you hand over the money? Of course not. Yet this is what large language models (LLMs) do. Prompt injection is a method of tricking LLMs into doing things they are normally prevented from doing. A user writes a prompt in a certain way, asking for system passwords or private

Internet Voting is Too Insecure for Use in Elections

No matter how many times we say it, the idea comes back again and again. Hopefully, this letter will hold back the tide for at least a while longer. Executive summary: Scientists have understood for many years that internet voting is insecure and that there is no known or foreseeable technology that can make it secure. Still, vendors of internet voting keep claiming that, somehow, their new system is different, or the insecurity doesn't matter. Bradley Tusk and his Mobile Voting Foundation

Could ChatGPT Convince You to Buy Something?

Eighteen months ago, it was plausible that artificial intelligence might take a different path than social media. Back then, AI's development hadn't consolidated under a small number of big tech firms. Nor had it capitalized on consumer attention, surveilling users and delivering ads. Unfortunately, the AI industry is now taking a page from the social media playbook and has set its sights on monetizing consumer attention. When OpenAI launched its ChatGPT Search feature in late 2024 a

AI-Powered Surveillance in Schools

It all sounds pretty dystopian: Inside a white stucco building in Southern California, video cameras compare faces of passersby against a facial recognition database. Behavioral analysis AI reviews the footage for signs of violent behavior. Behind a bathroom door, a smoke detector-shaped device captures audio, listening for sounds of distress. Outside, drones stand ready to be deployed and provide intel from above, and license plate readers from $8.5 billion surveillance behemoth Flock Safety en

AI and the Corporate Capture of Knowledge

More than a decade after Aaron Swartz's death, the United States is still living inside the contradiction that destroyed him. Swartz believed that knowledge, especially publicly funded knowledge, should be freely accessible. Acting on that, he downloaded thousands of academic articles from the JSTOR archive with the intention of making them publicly available. For this, the federal government charged him with a felony and threatened decades in prison. After two years of prosecutorial press

Announcing OSV-Scanner V2: Vulnerability scanner and remediation tool for open source

Titan Security Keys now available in more countries

Google announces Sec-Gemini v1, a new experimental cybersecurity model

Advanced Protection: Google’s Strongest Security for Mobile Devices

Advancing Protection in Chrome on Android