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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

Security & Privacy 152Society, Policy & Culture 88Crypto & Blockchain 10Life, Learning & Writing 9Tools & Productivity 8Math & Algorithms 7

1

25 years of mass surveillance is enough

This essay was written with Cindy Cohn, and originally appeared in Lawfare. One of the many legacies of the terrorist attacks of Sept. 11 is the government-wide shift from targeted surveillance—such as individual wiretaps or pen register/trap and trace orders—to mass surveillance techniques—such as tapping into the…

3

It's Time to Break Up the NSA (2014)

The NSA has become too big and too powerful. What was supposed to be a single agency with a dual mission—protecting the security of U.S. communications and eavesdropping on the communications of our enemies—has become unbalanced in the post-Cold War, all-terrorism-all-the-time era. Putting the U.S. Cyber Command, the…

5

I hate password rules

The other day, I was creating a new account on the web. It was financial in nature, which means it gets one of my most secure passwords. I used Password Safe to generate this 16-character alphanumeric password: :s^Twd.J;3hzg=Q~ Which was rejected by the site, because it didn’t meet its password security rules. It took…

6

Today I Briefed Congress on the NSA

This morning, I spent an hour in a closed room with six members of Congress: Rep. Lofgren, Rep. Sensenbrenner, Rep. Bobby Scott, Rep. Goodlatte, Rep. Mike Thompson, and Rep. Amash. No staffers, no public: just them. Lofgren had asked me to brief her and a few Representatives on the NSA. She said that the NSA wasn’t…

7

The Internet Is a Surveillance State

Polish translation I’m going to start with three data points. One: Some of the Chinese military hackers who were implicated in a broad set of attacks against the U.S. government and corporations were identified because they accessed Facebook from the same network infrastructure they used to carry out their attacks…

8

Signal Adds Cryptocurrency Support

According to Wired, Signal is adding support for the cryptocurrency MobileCoin, “a form of digital cash designed to work efficiently on mobile devices while protecting users’ privacy and even their anonymity.” Moxie Marlinspike, the creator of Signal and CEO of the nonprofit that runs it, describes the new payments…

9

DOGE as a National Cyberattack

In the span of just weeks, the US government has experienced what may be the most consequential security breach in its history—not through a sophisticated cyberattack or an act of foreign espionage, but through official orders by a billionaire with a poorly defined government role. And the implications for national…

10

AI and Mass Spying

Spying and surveillance are different but related things. If I hired a private detective to spy on you, that detective could hide a bug in your home or car, tap your phone, and listen to what you said. At the end, I would get a report of all the conversations you had and the contents of those conversations. If I hired…

11

Inrupt, Tim Berners-Lee's Solid, and Me

For decades, I have been talking about the importance of individual privacy. For almost as long, I have been using the metaphor of digital feudalism to describe how large companies have become central control points for our data. And for maybe half a decade, I have been talking about the world-sized robot that is the…

12

Microsoft is spying on users of its AI tools

Microsoft announced that it caught Chinese, Russian, and Iranian hackers using its AI tools—presumably coding tools—to improve their hacking abilities. From their report: In collaboration with OpenAI, we are sharing threat intelligence showing detected state affiliated adversaries—tracked as Forest Blizzard, Emerald…

14

Facebook Plans on Backdooring WhatsApp?

This article points out that Facebook’s planned content moderation scheme will result in an encryption backdoor into WhatsApp: In Facebook’s vision, the actual end-to-end encryption client itself such as WhatsApp will include embedded content moderation and blacklist filtering algorithms. These algorithms will be…

15

How the Norwegians Reacted to Terrorism

An antidote to the American cycle of threat, fear, and overspending in response to terrorism is this, about Norway on the first anniversary of its terrorist massacre: And at the political level, the Prime Minister Jens Stoltenberg pledged to do everything to ensure the country’s core values were not undermined. “The…

16

Air Gaps

Since I started working with Snowden’s documents, I have been using a number of tools to try to stay secure from the NSA. The advice I shared included using Tor, preferring certain cryptography over others, and using public-domain encryption wherever possible. I also recommended using an air gap, which physically…

17

Our Newfound Fear of Risk

We’re afraid of risk. It’s a normal part of life, but we’re increasingly unwilling to accept it at any level. So we turn to technology to protect us. The problem is that technological security measures aren’t free. They cost money, of course, but they cost other things as well. They often don’t provide the security…

18

Abolish the Department of Homeland Security

I have a love/hate relationship with the Cato Institute. Most of their analysis I strongly disagree with, but some of it I equally strongly agree with. Last September 11—the tenth anniversary of 9/11—Cato’s David Rittgers published “Abolish the Department of Homeland Security“: DHS has too many subdivisions in too…

19

Attorney General Barr and Encryption

Last month, Attorney General William Barr gave a major speech on encryption policy­—what is commonly known as “going dark.” Speaking at Fordham University in New York, he admitted that adding backdoors decreases security but that it is worth it. Some hold this view dogmatically, claiming that it is technologically…

20

Deliberate Internet Shutdowns

For two days in September, Afghanistan had no internet. No satellite failed; no cable was cut. This was a deliberate outage, mandated by the Taliban government. It followed a more localized shutdown two weeks prior, reportedly instituted “to prevent immoral activities.” No additional explanation was given. The timing…

21

UK Threatens End-to-End Encryption

In an open letter, seven secure messaging apps—including Signal and WhatsApp—point out that the UK’s Online Safety Bill could destroy end-to-end encryption: As currently drafted, the Bill could break end-to-end encryption,opening the door to routine, general and indiscriminate surveillance of personal messages of…

22

Metadata Equals Surveillance

Back in June, when the contents of Edward Snowden’s cache of NSA documents were just starting to be revealed and we learned about the NSA collecting phone metadata of every American, many people—including President Obama—discounted the seriousness of the NSA’s actions by saying that it’s just metadata. Lots and lots…

23

Comments on the Sony Hack

I don’t have a lot to say about the Sony hack, which seems to still be ongoing. I want to highlight a few points, though. At this point, the attacks seem to be a few hackers and not the North Korean government. (My guess is that it’s not an insider, either.) That we live in the world where we aren’t sure if any given…

24

TSA Master Keys

Someone recently noticed a Washington Post story on the TSA that originally contained a detailed photograph of all the TSA master keys. It’s now blurred out of the Washington Post story, but the image is still floating around the Internet. The whole thing neatly illustrates one of the main problems with backdoors…

25

Heartbleed

Heartbleed is a catastrophic bug in OpenSSL: “The Heartbleed bug allows anyone on the Internet to read the memory of the systems protected by the vulnerable versions of the OpenSSL software. This compromises the secret keys used to identify the service providers and to encrypt the traffic, the names and passwords of…

26

Schneier's response to Eric Schmidt

Schmidt said: I think judgment matters. If you have something that you don’t want anyone to know, maybe you shouldn’t be doing it in the first place. If you really need that kind of privacy, the reality is that search engines—including Google—do retain this information for some time and it’s important, for example…

27

Google's Backdoor Access System into Gmail Accounts

Google made headlines when it went public with the fact that Chinese hackers had penetrated some of its services, such as Gmail, in a politically motivated attempt at intelligence gathering. The news here isn’t that Chinese hackers engage in these activities or that their attempts are technically sophisticated—we knew…

29

How the NSA Threatens National Security

Secret NSA eavesdropping is still in the news. Details about once secret programs continue to leak. The Director of National Intelligence has recently declassified additional information, and the President’s Review Group has just released its report and recommendations. With all this going on, it’s easy to become…