| Date | User | Challenge | Score |
| Esmeralda131 | Base64 | 10 | |
| kamilsan | Sharks on the Wire | 10 | |
| vpn_browse | Modes of Operation Starter | 15 | |
| diego11 | XOR Starter | 10 | |
| makorh | Moving Problems | 150 | |
| tfabjan | Base64 | 10 | |
| Esmeralda131 | Hex | 5 | |
| Esmeralda131 | ASCII | 5 | |
| Denal | Finding Flags | 2 | |
| M0hi5h18 | Finding Flags | 2 | |
| df_ghk | Efficient Exchange | 50 | |
| df_ghk | Curves and Logs | 40 | |
| df_ghk | Scalar Multiplication | 35 | |
| kamilsan | ECB Oracle | 60 | |
| df_ghk | Point Addition | 30 | |
| df_ghk | Point Negation | 10 | |
| hack_use_math | Symmetry | 50 | |
| df_ghk | Background Reading | 5 | |
| tfabjan | Hex | 5 | |
| lucky123 | Modulus Inutilis | 50 | |
| tfabjan | ASCII | 5 | |
| Raccoon42 | Meet me in the Claw | 120 | |
| tfabjan | Great Snakes | 3 | |
| tfabjan | Finding Flags | 2 | |
| shrimp2845 | Script Kiddie | 70 | |
| vpn_browse | Bringing It All Together | 50 | |
| asddsaqweewq | Resisting Bruteforce | 10 | |
| asddsaqweewq | Keyed Permutations | 5 | |
| shrimp2845 | Export-grade | 100 | |
| txx | Modular Inverting | 25 | |
| txx | Modular Arithmetic 2 | 20 | |
| MR_X | Extended GCD | 20 | |
| txx | Modular Arithmetic 1 | 20 | |
| DaBot | Parameter Injection | 60 | |
| Raccoon42 | Dual Masters | 90 | |
| kamilsan | Parameter Injection | 60 | |
| shrimp2845 | Parameter Injection | 60 | |
| nous | Nothing Up My Sleeve | 150 | |
| cccccccai7224 | Greatest Common Divisor | 15 | |
| asddsaqweewq | Modular Arithmetic 1 | 20 | |
| monkeydnaruto | Finding Flags | 2 | |
| txx | Extended GCD | 20 | |
| jimsteph | Deriving Symmetric Keys | 40 | |
| asddsaqweewq | Extended GCD | 20 | |
| txx | Greatest Common Divisor | 15 | |
| diego11 | Bytes and Big Integers | 10 | |
| MuhammadTIB | Modulus Inutilis | 50 | |
| aunizul | Bytes and Big Integers | 10 | |
| Aptenodyte | Greatest Common Divisor | 15 | |
| aunizul | Base64 | 10 |
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