Business Logic on CyberSec Writeupshttps://mrbeetrootpwn.com/tags/business-logic/Recent content in Business Logic on CyberSec WriteupsHugoen-usWed, 12 Aug 2026 00:00:00 +0000THM: Towel on the Sunbedhttps://mrbeetrootpwn.com/write-ups/tryhackme/thm-towelonthesunbed/Wed, 12 Aug 2026 00:00:00 +0000https://mrbeetrootpwn.com/write-ups/tryhackme/thm-towelonthesunbed/Web challenge exploiting a TOCTOU race condition in a daily reward-claim endpoint using Burp Suite’s parallel Repeater requests to unlock a restricted vault.