Schneier on Security A blog covering security and security technology.
- The Intersection of Encryption and AIby Bruce Schneier on June 2, 2026 at 11:06 am
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 author Bruce Schneier contributed a column on June 20, 2010, warning about cryptography’s inability to secure modern networks, a point he says he has been trying to argue since 2000. “For a while now, I’ve pointed out that cryptography is singularly ill-suited to solve the major network security problems of today: denial-of-service attacks, website defacement, theft of credit card numbers, identity theft, viruses and worms, DNS attacks, network penetration, and so on…
- Microsoft Threatening Security Researcherby Bruce Schneier on June 2, 2026 at 11:00 am
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 traded back and forth.
- Vulnerability Disclosure in the Age of AIby Bruce Schneier on June 1, 2026 at 4:49 pm
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 identifying exploitable software vulnerabilities at unprecedented speed and scale. This development exposes decades of accumulated technical debt created by a software industry that prioritized rapid deployment over secure-by-design engineering practices. Drawing on the evolution of software assurance, vulnerability disclosure frameworks, and U.S. cyber policy, this perspective argues that the current moment represents a strategic inflection point for governments, industry, and critical infrastructure operators. The author examines the growing tension between offensive and defensive equities in cyberspace, the emergence of AI-enabled vulnerability discovery capabilities in both the U.S. and China, and the increasing risks posed by unsupported legacy systems and AI-assisted code generation practices. Responsible disclosure can no longer remain a reactive or fragmented process, but must become a coordinated national and international resilience effort involving governments, software vendors, infrastructure operators, and emergency response organizations. The article concludes with an urgent call for accelerated remediation, large-scale patch management coordination, and sustained investment in automated vulnerability repair capabilities before adversaries exploit this rapidly narrowing window of opportunity…
- Friday Squid Blogging: Another Squidby Bruce Schneier on May 29, 2026 at 9:05 pm
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.
- Chilling Effectsby Bruce Schneier on May 29, 2026 at 11:02 am
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 virtually nonexistent. This silence comes in the wake of a relentless Trump administration war on campus speech that has involved lawsuits, arrests, deportations and expulsions. Reports cite a range of complicated factors for the restraint, from apathy to technology-induced incapacity. But as …
- FBI’s 2025 Internet Crime Reportby Bruce Schneier on May 27, 2026 at 2:02 pm
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.
- Identifying People Using Wi-Fi Routersby Bruce Schneier on May 26, 2026 at 3:02 pm
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 through a space, they interact with the objects and people around them. Those signals can be reflected, scattered, or absorbed. By analyzing how the signal is expected to behave compared with how it is actually received, researchers can infer details about the surrounding environment…
- Friday Squid Blogging: Regulating Squid Fishing in the South Pacificby Bruce Schneier on May 22, 2026 at 9:04 pm
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.
- CISA Security Leakby Bruce Schneier on May 22, 2026 at 1:58 pm
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 experts said the public archive included files detailing how CISA builds, tests and deploys software internally, and that it represents one of the most egregious government data leaks in recent history. News article.
- macOS Kernel Memory Corruption Exploitby Bruce Schneier on May 21, 2026 at 4:03 pm
A group used Anthropic’s Mythos AI model to help find a kernel memory corruption vulnerability and exploit on Apple’s M5. News article.





