ruby
ruby
fail2ban
How to configure Fail2ban
Fail2ban turns brute-force noise on SSH and your reverse proxy into a boring automated reaction. A practical setup for a VPS or homelab: sane jail config, testing before trusting, notifications without a siren, and where it fits in the wider security story.
ruby
OJ is not as safe as you think for your JSON
OJ speeds up JSON in Ruby, but Oj.mimic_JSON silently drops the script_safe option, opening the door to XSS, and adds time precision quirks. What its monkey patching really changes, the stability risks, and best practices for using OJ without surprises.
Latest
The Truth About Password Security: Beyond Special Characters
Password security depends on entropy, not special characters. The math behind entropy = N * log2(R), why length beats complexity rules, why database breaches (not login guessing) are the real threat, and implementation tips for saner password policies.