Dozens of minimal operating systems to learn x86 system programming. Tested on Ubuntu 17.10 host in QEMU 2.10 and real hardware. Userland cheat at: https://github.com/cirosantilli/linux-kernel-modu…

The Moby Project - a collaborative project for the container ecosystem to assemble container-based systems

A list of useful payloads and bypass for Web Application Security and Pentest/CTF

A native implementation of TLS in Javascript and tools to write crypto-based and network-heavy webapps

Performance analysis tools based on Linux perf_events (aka perf) and ftrace

Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

A transparent, highly scalable and cryptographically verifiable data store.

Crypto 101, the introductory book on cryptography.

'Extra featured' OpenSSL with ChaCha20 and Poly1305 support

Scripts to measure and generate graphs for network, cpu, memory and load-avg of the system.

Modern Memory Safety in C/C

A set of malicious payloads for XSS testing

A Scalable Client Authentication & Authorization System for Container-based Environments

SMTP Strict Transport Security

A quick and easy way to test CSP behavior on modern browsers

A quick and easy way to test CSP behavior on modern browsers

Scripts to pull DMARC reports from your mailbox (imap client) and convert it to Splunk friendly comma-separated key-value format

A wrapper script over iptables/ipset to manage host based IP dynamic blacklists and whitelists