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Bruce Schneier

schneier.com

In both a 2021 essay and my 2022 book, A Hacker’s Mind , I talk about AIs finding vulnerabilities and exploits—hacking—the legal system.

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Visit schneier.com → RSS feedOn Hacker News Jul 2008 – Sep 2026

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91

Users Rationally Rejecting Security Advice (2009)

This paper, by Cormac Herley at Microsoft Research, sounds like me: Abstract: It is often suggested that users are hopelessly lazy and unmotivated on security questions. They chose weak passwords, ignore security warnings, and are oblivious to certicates errors. We argue that users’ rejection of the security advice…

92

The NSA Is Hoarding Vulnerabilities

The National Security Agency is lying to us. We know that because data stolen from an NSA server was dumped on the Internet. The agency is hoarding information about security vulnerabilities in the products you use, because it wants to use it to hack others’ computers. Those vulnerabilities aren’t being reported, and…

93

Bruce Schneier: Refuse to be terrorized

On Aug. 16, two men were escorted off a plane headed for Manchester, England, because some passengers thought they looked either Asian or Middle Eastern, might have been talking Arabic, wore leather jackets, and looked at their watches—and the passengers refused to fly with them on board. The men were questioned for…

94

Another Piece of the Stuxnet Puzzle

We can now conclusively link Stuxnet to the centrifuge structure at the Natanz nuclear enrichment lab in Iran. Watch this new video presentation from Ralph Langner, the researcher who has done the most work on Stuxnet. It’s a long clip, but the good stuff is between 21:00 and 29:00. The pictures he’s referring to are…

95

Fingerprinting iPhones

This clever attack allows someone to uniquely identify a phone when you visit a website, based on data from the accelerometer, gyroscope, and magnetometer sensors. We have developed a new type of fingerprinting attack, the calibration fingerprinting attack. Our attack uses data gathered from the accelerometer…

96

China Spying on Undersea Internet Cables

Supply chain security is an insurmountably hard problem. The recent focus is on Chinese 5G equipment, but the problem is much broader. This opinion piece looks at undersea communications cables: But now the Chinese conglomerate Huawei Technologies, the leading firm working to deliver 5G telephony networks globally…

97

I Am Parting with My Crypto Library

The time has come for me to find a new home for my (paper) cryptography library. It’s about 150 linear feet of books, conference proceedings, journals, and monographs—mostly from the 1980s, 1990s, and 2000s. My preference is that it goes to an educational institution, but will consider a corporate or personal home if…

98

Surveillance and the Internet of Things

The Internet has turned into a massive surveillance tool. We’re constantly monitored on the Internet by hundreds of companies—both familiar and unfamiliar. Everything we do there is recorded, collected, and collated—sometimes by corporations wanting to sell us stuff and sometimes by governments wanting to keep an eye…

99

Finding Sociopaths on Facebook

On his blog, Scott Adams suggests that it might be possible to identify sociopaths based on their interactions on social media. My hypothesis is that science will someday be able to identify sociopaths and terrorists by their patterns of Facebook and Internet use. I’ll bet normal people interact with Facebook in ways…

100

Can I Be Trusted?

Slashdot asks the question: I’m a big fan of Bruce Schneier, but just to play devil’s advocate, let’s say, hypothetically, that Schneier is actually in cahoots with the NSA. Who better to reinstate public trust in weakened cryptosystems? As an exercise in security that Schneier himself may find interesting, what…

101

Detaining David Miranda

Last Sunday, David Miranda was detained while changing planes at London Heathrow Airport by British authorities for nine hours under a controversial British law—the maximum time allowable without making an arrest. There has been much made of the fact that he’s the partner of Glenn Greenwald, the Guardian reporter whom…

102

Volkswagen and Cheating Software

Portuguese translation by Ricardo R Hashimoto For the past six years, Volkswagen has been cheating on the emissions testing for its diesel cars. The cars’ computers were able to detect when they were being tested, and temporarily alter how their engines worked so they looked much cleaner than they actually were. When…

103

Excess Automobile Deaths as a Result of 9/11

People commented about a point I made in a recent essay: In the months after 9/11, so many people chose to drive instead of fly that the resulting deaths dwarfed the deaths from the terrorist attack itself, because cars are much more dangerous than airplanes. Yes, that’s wrong. Where I said “months,” I should have…

105

Kevin Mitnick Hacked California Law in 1983

Early in his career, Kevin Mitnick successfully hacked California law. He told me the story when he heard about my new book, which he partially recounts his 2012 book, Ghost in the Wires. The setup is that he just discovered that there’s warrant for his arrest by the California Youth Authority, and he’s trying to…

106

Feudal Security

It’s a feudal world out there. Some of us have pledged our allegiance to Google: We have Gmail accounts, we use Google Calendar and Google Docs, and we have Android phones. Others have pledged allegiance to Apple: We have Macintosh laptops, iPhones, and iPads; and we let iCloud automatically synchronize and back up…

107

The Insecurity of Secret IT Systems

We now know a lot about the security of the Rapiscan 522 B x-ray system used to scan carry-on baggage in airports worldwide. Billy Rios, director of threat intelligence at Qualys, got himself one and analyzed it. And he presented his results at the Kaspersky Security Analyst Summit this week. It’s worse than you might…

108

I’m Leaving IBM

Today is my last day at IBM. If you’ve been following along, IBM bought my startup Resilient Systems in Spring 2016. Since then, I have been with IBM, holding the nicely ambiguous title of “Special Advisor.” As of the end of the month, I will be back on my own. I will continue to write and speak, and do the occasional…

109

Frequent Password Changes Is a Bad Security Idea

I’ve been saying for years that it’s bad security advice, that it encourages poor passwords. Lorrie Cranor, now the FTC’s chief technologist, agrees: By studying the data, the researchers identified common techniques account holders used when they were required to change passwords. A password like “tarheels#1”, for…

110

What I've Been Thinking About

I’m starting to think about my next book, which will be about power and the Internet—from the perspective of security. My objective will be to describe current trends, explain where those trends are leading us, and discuss alternatives for avoiding that outcome. Many of my recent essays have touched on various facets…

111

A Hardware Privacy Monitor for iPhones

Andrew “bunnie” Huang and Edward Snowden have designed a hardware device that attaches to an iPhone and monitors it for malicious surveillance activities, even in instances where the phone’s operating system has been compromised. They call it an Introspection Engine, and their use model is a journalist who is…

112

The NSA is not made of magic (2014)

I am regularly asked what is the most surprising thing about the Snowden NSA documents. It’s this: the NSA is not made of magic. Its tools are no different from what we have in our world, it’s just better-funded. X-KEYSCORE is Bro plus memory. FOXACID is Metasploit with a budget. QUANTUM is AirPwn with a seriously…

113

Schneier on Security: Recording the Police

I’ve written a lot on the “War on Photography,” where normal people are harassed as potential terrorists for taking pictures of things in public. This article is different; it’s about recording the police: Allison’s predicament is an extreme example of a growing and disturbing trend. As citizens increase their…

114

No, RSA Is Not Broken

I have been seeing this paper by cryptographer Peter Schnorr making the rounds: “Fast Factoring Integers by SVP Algorithms.” It describes a new factoring method, and its abstract ends with the provocative sentence: “This destroys the RSA cryptosystem.” It does not. At best, it’s an improvement in factoring—and I’m not…

116

Insecurities in the Linux /dev/random

New paper: “Security Analysis of Pseudo-Random Number Generators with Input: /dev/random is not Robust, by Yevgeniy Dodis, David Pointcheval, Sylvain Ruhault, Damien Vergnaud, and Daniel Wichs. Abstract: A pseudo-random number generator (PRNG) is a deterministic algorithm that produces numbers whose distribution is…

117

Bounty to Recover NIST's Elliptic Curve Seeds

This is a fun challenge: The NIST elliptic curves that power much of modern cryptography were generated in the late ’90s by hashing seeds provided by the NSA. How were the seeds generated? Rumor has it that they are in turn hashes of English sentences, but the person who picked them, Dr. Jerry Solinas, passed away in…

118

I'm Writing a Book on Security

I’m writing a book on security in the highly connected Internet-of-Things world. Tentative title: Click Here to Kill Everybody Peril and Promise in a Hyper-Connected World There are two underlying metaphors in the book. The first is what I have called the World-Sized Web, which is that combination of mobile, cloud…

120

Who Does Skype Let Spy?

Lately I’ve been thinking a lot about power and the Internet, and what I call the feudal model of IT security that is becoming more and more pervasive. Basically, between cloud services and locked-down end-user devices, we have less control and visibility over our security—and have no point but to trust those in power…