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Security & Privacy

The most popular blog posts about security & privacy on Hacker News. 8,770 posts.

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5552

Password reuse and credential stuffing

The short version: I'm loading over 1 billion breached accounts into HIBP. These are from 2 different "combo lists", collections of email addresses and passwords from all sorts of different locations. I've verified their accuracy (including my own record in one of them) and many hundreds of millions

5554

Spectre Mitigations in Microsoft's C/C++ Compiler

This form of Spectre can be used to attack a broad range of software -- operating systems, device drivers, web APIs, database systems, and almost anything else that receives untrusted input and may run on the same computer as untrusted code. Because large programs can contain literally millions of conditional branches…

5557

Something Secret This Way Comes

On the Rust Lint Workshop, I started coding on a “secret” project (Actually I hinted at the possibility during our 100 clippy lints celebration). Now that I’ve built a prototype, it’s time to spill the beans: I wrote a new lint. One might even say a new type of lint. One of the interesting things about this lint is…

5561

Dissecting Apple's Sparse Image Format (ASIF)

At WWDC 2025, Apple announced macOS 26 Tahoe. One of the new features in macOS Tahoe is a new disk image format: ASIF. Designed for use with virtual machines (its documentation lives under the Virtualization framework), ASIF takes a lot of inspiration from existing virtual disk formats. Practically, that means it’s…

5566

Extended Validation Certificates Are Really Dead

Almost one year ago now, I declared extended validation certificates dead [https://www.troyhunt.com/extended-validation-certificates-are-dead/]. The entity name had just been removed from Safari on iOS, it was about to be removed from Safari on Mojave and there were indications that Chrome would remove it

5579

Saying goodbye to encrypted SMS/MMS

It’s 2015, and the end of the road for encrypted SMS/MMS in TextSecure. The TextSecure story started back in 2009, at the dawn of the smartphone era. Back then, TextSecure focused on securing the transport that everyone coming from feature phones was familiar with: SMS. Today, many things have c...