Tech Solvency / Passwords / Puzzles

My puzzles

• 2022-03-17: The Leaning Tower of Hashes
• 2022-02-10: Friends in Low Places (II)
• 2021-07-03: Friends in Low Places (I)
• 2017-05-10: Bookends (tweet only)
• 2016-08-11: 0x38b - a puzzle on a bumper sticker

Password / cracking challenges from others

• The yearly Crack Me If You Can contest at DEF CON, created by KoreLogic
• Ming Chow's CS 116: Intro to Security course at Tufts includes a password-cracking lab challenge every semester
• The TryHackMe "Crack The Hash" room
• HashMob is arguably the largest ongoing password-cracking competition in the world
• The 0xPOLAND smart-contract / cracking puzzle (writeup by iphelix)
• Hash Olympics - A Hash Cracking Contest Without Good Hardware (Utku Sen, 2021)
• Paul Moore's 2020 SHA256 challenge and solution
• NETMUX 2018 contest and lakiw's writeup
• How strong should your Master Password be? For World Password Day we’d like to know (1Password 2018 contest)
• 1Password also has a standing $1M hacking bounty - whitebox, multiple steps but with a likely cracking component somewhere (Forbes article)
• linuxvoice.com 2014 contest
• Roger Grimes' Infoworld contest (2006)
• OWASP WrongSecrets presented in CTF style
• Bill Joy's near-mythical CSRG descrypt hash: bill:.2xvLVqGHJm8M