StoutCTF 2026 Spring 10 This XOR That? Nov 7, 2026 Revised Multi-Factor Authentication Nov 7, 2026 New and Improved Bank of Mints Nov 7, 2026 Multi-Factor Authentication Nov 7, 2026 Loose Strings Nov 7, 2026 License Checker Nov 7, 2026 Ghost Functions Nov 7, 2026 Flag Checker Nov 7, 2026 Deep Cut Nov 7, 2026 Minty VM May 4, 2026