Command-line client code for Tarsnap.

"Can I take over DNS?" — a list of DNS providers and how to claim vulnerable domains.

Stuff discovered while analyzing the malware hidden in xz-utils 5.6.0 and 5.6.1

uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.

Encrypted overlay filesystem written in Go

🦄 A curated list of privacy & security-focused software and services

Easily and securely send things from one computer to another 🐊 📦

Combination of multiple linters to run as a GitHub Action or standalone

SSH server & client security auditing (banner, key exchange, encryption, mac, compression, compatibility, security, etc)

🧠 Laws, Theories, Principles and Patterns for developers and technologists.

AddressSanitizer, ThreadSanitizer, MemorySanitizer

american fuzzy lop - a security-oriented fuzzer

Reptar, Downfall, Zenbleed, ZombieLoad, RIDL, Fallout, Foreshadow, Spectre, Meltdown vulnerability/mitigation checker for Linux & BSD

Questions to ask the company during your interview

An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Cervantes, Kindle, Kobo, PocketBook and Android devices

Guidelines for low-level cryptography software

ShellCheck, a static analysis tool for shell scripts

Practical Cryptography for Developers: Hashes, MAC, Key Derivation, DHKE, Symmetric and Asymmetric Ciphers, Public Key Cryptosystems, RSA, Elliptic Curves, ECC, secp256k1, ECDH, ECIES, Digital Sign…

Shell library to test your tools like Git does

Collection of awesome podcasts

Google Authenticator PAM module

Community guide to using YubiKey for GnuPG and SSH - protect secrets with hardware crypto.

by ex-googlers, for ex-googlers - a lookup table of similar tech & services

Gargoyle Router Management Utility

A transparent and secure way to look up public keys.

How to Make a Computer Operating System in C++

A modern, portable, easy to use crypto library.

The password hash Argon2, winner of PHC

A private messenger for Android.