https://blog.omiilgo.com/tags/concurrency/ Recent content in Concurrency on Security Notes Hugo en-us Sat, 11 Apr 2026 09:00:00 +0800 https://blog.omiilgo.com/posts/financial-apps-concurrency-vs-authz/ Sat, 11 Apr 2026 09:00:00 +0800 https://blog.omiilgo.com/posts/financial-apps-concurrency-vs-authz/ Lab SQLite ledger: UPDATE without a version column vs WITH version, plus an IDOR that is not a race — no money-drain client. https://blog.omiilgo.com/posts/web-race-conditions-notes/ Fri, 19 May 2023 15:00:00 +0800 https://blog.omiilgo.com/posts/web-race-conditions-notes/ Lab Go counter without a mutex, then with one; HTTP coupon handler; lost-update logs — no inventory-drain exploit script.