The best Capture The Flag newsletters

A personal blog-style newsletter by a security researcher who shares a local privilege escalation write-up with emotional context, reflections on using AI for web design, and a beginner's guide to Capture the Flag competitions. It mixes technical vulnerability detail with personal stories about perseverance, family, and the hacker community.

A newsletter publishing write-ups and stories for story-driven OSINT and steganography capture-the-flag challenges run through a Discord community. Each issue walks through a challenge's solution, with post-mortems on puzzles nobody solved.

A personal blog by r3pek covering open source software and infosec, including write-ups of HackTheBox machines and reflections on earning the OSCP certification. The posts are hands-on walkthroughs with command output and a practical, first-person voice.

A technical newsletter covering infosec, cloud and data topics through explainers and hands-on CTF walkthroughs. Readers get beginner-friendly step-by-step solutions and short primers such as Infrastructure as Code with Terraform examples.