This article in Nature argues that it’s due to an overfishing of predators and warming sea temperatures. 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. [...]
PHP2Shell (CVE-2026-109618 and CVE-2026-109619) became the latest vulnerability to grab headlines around the globe. By some estimates, up to 70% of websites run at least some PHP. So if you're respons [...]
The Indian CA eMudhra Limited has eight TLS certificates with laughably weak private keys: The compromised eMudhra keys were defective at a level that’s challenging the imagination of many of the engineers studying the incident. A normal size for a NIST P-384 elliptic curve cryptography private key contains roughly 384 bits of entropy, a size allowing almost 2384, or a number with 116 digits, diff [...]
Brookings and the World Economic Forum say agent governance must be continuous, scoped in advance, evidenced, and monitored at runtime. We think that bar is correct, and that most organizations are nowhere near it. Most of what companies call AI agent governance today is paperwork. A review board approves the use case. A policy document says agents must follow least privilege. A risk assess [...]
PHP maintainers have released fixes for two critical vulnerabilities: PHP 8.5.12, 8.4.27, 8.3.36 and 8.2.35 fix two critical vulnerabilities that can allow unauthenticated remote code execution. All PHP users are strongly encouraged to update immediately. Who is at risk: all PHP installations serving web requests, including PHP-FPM, Apache with mod_php, php-cgi, FrankenPHP and LiteSpeed. We consi [...]
PHP remains one of the most widely deployed server-side languages on the web. Estimates suggest it powers close to 70% of all websites, from small personal blogs to large-scale government services, banking platforms, and e-commerce applications. With such huge presence, any vulnerability in PHP's core engine carries the potential to affect a significant portion of the web. On October 21st, 2026, t [...]
Expect to see quite a few websites serving error pages today: Nearly 70 percent of websites need to update their core software to fix a pair of vulnerabilities that allow an attacker to seize full control over affected servers. Experts say there are working exploits for the flaws, and that these critical bugs are already being exploited in the wild. Image: Shutterstock.com, Sashkin. The flaws at i [...]
Today we’re publishing patching-bugs and regression-hunt, two plugins that let engineers delegate patch development and regression checks to agents. Our patching-bugs plugin reproduces reported bugs, develops fixes, and tests them. The regression-hunt plugin checks whether any changes break previously working and supported behavior. Engineers can direct the work and review their results; maintaine [...]
There’s a new archive of all the papers from twenty-five years of the Workshop on Economics and Information Security (WEIS). Really nice resource. It’s fun to reread my 2002 essay on the economics of information security. [...]
Why the latest Intigriti platform data challenges the notion that AI could replace bug bounty. How researchers are moving from single prompts to multi-agent, always-on workflows. Why AI raises the baseline for vulnerability discovery while the crowd expands its upper limit. What CrowdRecon is teaching us about the coverage already created by hacker reconnaissance. Why coordination, validation, and [...]
Malicious releases of LiteLLM v1.107.0 were published to PyPI and container registries following multiple maintainer account compromises. [...]
Learn about the two critical vulnerabilities in PHP dubbed PHP2Shell. [...]
Justin.sh is reporting on a confidential Cellebrite document that has been leaked to him: Cellebrite calls it Advanced Unlocks (AU from here on), not to be confused with the “advanced unlocking services” they’ve marketed for years. A press release from earlier this year confirms AU is a new product for 2026. […] According to Cellebrite, AU: is a “next-generation AFU [...]
Introducing pathrunner, a modular, cloud-native offensive security framework that automates the exploitation of AWS IAM privilege escalation paths. [...]
U.S. federal investigators pursuing the ShinyHunters hacking group that recently stole highly sensitive data from the FBI have identified executives at two different ransomware negotiation firms who maintained unusually close relations with the extortion group, KrebsOnSecurity has learned. Sources close to the investigation say one of the executives in the United States even helped ShinyHunters op [...]
Interesting research: Abstract: Vision-language models (VLMs) can solve visual CAPTCHAs without task-specific training, but the agents built on them approach every challenge from scratch. For such an agent, the hundredth instance of a familiar puzzle costs as much time and compute as the first. Specialized detectors invert the trade-off, answering in milliseconds but only for categories they were [...]
We tested Sonnet 5, Composer 2.5, and GPT 5.5 using set security rules to see whether using them produces measurably more secure code. [...]
New research shows that squid lived all around the globe even before the Cretaceous-Paleogene mass extinction event. 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. [...]
This is a problem: Any open model whose weights have been edited can carry a backdoor, whether it’s a task-specific fine-tune, a merged adapter or an abliterated build. We have abliterated models in the title because it’s the most popular reason people download modified weights without verifying what’s inside. Abliteration is a cheap fine-tune that takes away a model’s abil [...]
Matthew Green has a new site that tries to estimate the number of cryptanalyst-hours that have been spent analyzing different public-key algorithms: Abstract: We estimate how much public cryptanalysis each public-key assumption has received, using the literature itself as the instrument. From roughly sixteen thousand candidate papers we classify cryptanalytic work on ECDLP, structured and plain la [...]
Launch Burp AT now Find out more about Burp AT Since we launched Burp AT at Black Hat USA, it's been great to s [...]
Across the bug bounty ecosystem, providers are moving ID verification on platforms earlier in the researcher journey. This is an industry-wide change. ID verification was historically a payout requirement, but it has now shifted to a submission requirement for programs that offer monetary rewards. Researchers who have completed ID verification tend to produce a higher signal ratio than researchers [...]
We evaluate Jev's prompt injection detection and show how counterfeit classification policies can steer its decisions and bypass LangChain's tool-risk gating. [...]
This is a current list of where and when I am scheduled to speak: I’m speaking at ATTENTION: Democracy, Rebuilt in Montreal, Quebec, Canada. The event runs October 21–23, 2026, and my talk is on Wednesday, October 21. I’m speaking at the University of Toronto in Toronto, Ontario, Canada, at 5 PM ET on October 22, 2026. I’m speaking at [un]prompted in San Francisco, California. The event runs Octo [...]
The United Kingdom has issued economic sanctions against Cryptomus, a chameleonic cryptocurrency platform that experts say serves as a major conduit for payments related to ransomware, narcotics, darknet markets, fraud and cybercrime services that are helping Russia circumvent existing financial restrictions. Heleket’s support agent on Telegram claims, despite all evidence to the contrary, t [...]
I tested 25 of the most popular package managers to check whether they detect a compromised package repository injecting malicious code into legitimate packages. This code integrity problem could be solved using cryptographic hashes or signatures, but many package managers are still vulnerable to this threat. Of the 25 package managers reviewed1, fewer than half used lockfiles that checked for tam [...]
Microsoft today issued updates to fix more than 1,400 security vulnerabilities in its Windows operating systems and other software. Today’s epic patch batch dwarfs September’s record of nearly 1,000 fixes, which was already about ten times the normal monthly patch load from Redmond. Just one of the weaknesses patched this week is considered a “zero day,” or already exploit [...]
Agents with the Federal Bureau of Investigation (FBI) on Thursday arrested an executive at a Canadian cybersecurity firm in connection with an investigation into the ShinyHunters hacking group that recently relieved the FBI of sensitive data on thousands of agents, multiple sources tell KrebsOnSecurity. The New York Times reported today that the FBI has arrested a Canadian man in Pennsylvania on s [...]
Wallarm Infrastructure Discovery Named Enterprise Cloud Security Solution of the Year. Ask an AWS security team how many accounts they run, and the honest answer is usually a range. Enterprises on AWS operate anywhere from 100 to 5,000 accounts. Most security teams can see only a fraction of them. That gap is why we built Wallarm Infrastructure Discovery. This week, it was named Enterprise [...]
A teenager from Amman, Jordan suspected of leading the prolific data theft and extortion group ShinyHunters has been detained and is reportedly cooperating with the FBI to identify other members of the hacking gang. KrebsOnSecurity has learned that the suspect, who uses the hacker handle “Rey,” was detained as ShinyHunters was in the process of extorting a business unit recently divest [...]
Security teams have more ways than ever to map assets, scan infrastructure, and track vulnerabilities. Yet one question often remains difficult to answer: what does a skilled researcher consider worth exploring? That question matters because external exposure is not only a list of internet-facing assets; it is also a set of relationships, assumptions, and possible paths that change as products, do [...]
In this post, we share LLM-specific validation patterns that attackers use to test exposed AWS credentials for Amazon Bedrock access. [...]
We analyzed RBAC bindings across over 65,000 Kubernetes clusters to find dangerous permissions granted to system:anonymous, system:unauthenticated, and system:authenticated. [...]
Multihashing is one of those cryptographic tasks that’s easy not to think about too much. This is unfortunate, because multihashing is a common stumbling point when cryptographers try to use hashes. As part of our goal to “fix software, not bugs,” Trail of Bits is introducing SequenceHash and its sister function SequenceMAC, a pair of related hash constructions that bring secure multihashing to de [...]
Answer this without checking: how many AI agents are running in your environment right now? Most security leaders give an estimate and a shrug. That is a fair response, because agents get spun up by an engineer solving a problem on a Tuesday afternoon, through a path that puts them on nobody's radar. In August 2026, researchers found AI agents connected to Hugging Face running loose inside ent [...]