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Security & Privacy

The most popular blog posts about security & privacy on Hacker News. 8,776 posts.

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Final post on Javascript crypto

The talk I gave last year on common crypto flaws still seems to generate comments. The majority of the discussion is by defenders of Javascript crypto. I made JS crypto a very minor part of the tal…

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Countering "Trusting Trust"

Way back in 1974, Paul Karger and Roger Schell discovered a devastating attack against computer systems. Ken Thompson described it in his classic 1984 speech, “Reflections on Trusting Trust.” Basically, an attacker changes a compiler binary to produce malicious versions of some programs, INCLUDING ITSELF. Once this is…

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SSL added and removed here ;-)

This post is part of our ongoing series about networks, privacy, governments and (of course) online security tools like Cloak. Last week, the Washington Post unleashed yet another bombshell revelation from the Snowden documents.

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Banking Applications Compatibility with GrapheneOS

Maintained Compatibility List for International Banking Apps This list includes banking apps that have been tested, submitted, reviewed, and verified as compatible. LIST | SUBMIT | UPDATE | POSSIBLE WORKAROUND SOLUTIONS Introduction Welcome to the crowd-sourced dataset for GrapheneOS users on currently supported…

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SHA-1 Broken

SHA-1 has been broken. Not a reduced-round version. Not a simplified version. The real thing. The research team of Xiaoyun Wang, Yiqun Lisa Yin, and Hongbo Yu (mostly from Shandong University in China) have been quietly circulating a paper describing their results: collisions in the the full SHA-1 in 2**69 hash…

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What’s the matter with PGP?

Last Thursday, Yahoo announced their plans to support end-to-end encryption using a fork of Google’s end-to-end email extension. This is a Big Deal. With providers like Google and Yahoo onboa…

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Android | Madaidan's Insecurities

By default, Android has a strong security model and incorporates full system SELinux policies , strong app sandboxing , full verified boot , modern exploit mitigations like fine-grained, forward-edge Control Flow Integrity and ShadowCallStack , widespread use of memory-safe languages (Java / Kotlin) and more. As such…

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Warrant Canary Frequently Asked Questions

What is a warrant canary? A warrant canary is a colloquial term for a regularly published statement that a service provider has not received legal process that it would be prohibited from saying it had received. Once a service provider does receive legal process, the speech prohibition goes into...

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Comcast caught hijacking web traffic

On November 20th, 2012 Comcast hijacked my HTTP traffic and re-routed it through their own servers, injecting a “notice” on the page before completing the request. What this means is instead of my web request being routed to the website I wanted to visit, Comcast took it upon themselves to hijack my web…

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WhatsApp's Signal Protocol integration is now complete

At Open Whisper Systems, our goal is to make private communication simple. A year ago, we announced a partnership with WhatsApp and committed to integrating the Signal Protocol into their product, moving towards full end-to-end encryption for all of their users by default. Over the past year, we...