| Date | User | Challenge | Score |
| r3xdj | Salty | 20 | |
| fd | Modular Exponentiation | 10 | |
| Nataliia_R | XOR Properties | 15 | |
| r3xdj | Manyprime | 40 | |
| nous | import numpy as MT (Zh3r0 CTF V2) | 0 | |
| Fridintana | Network Attacks | 5 | |
| marcofireball84 | Moving Problems | 150 | |
| Say3N | Quadratic Residues | 25 | |
| khxld | Finding Flags | 2 | |
| r3xdj | RSA Signatures | 25 | |
| joko | Static Client | 100 | |
| StrongTiger64 | Base64 | 10 | |
| joko | Export-grade | 100 | |
| tashte | Bytes and Big Integers | 10 | |
| joko | Parameter Injection | 60 | |
| tashte | Base64 | 10 | |
| tashte | Hex | 5 | |
| tashte | ASCII | 5 | |
| Nataliia_R | XOR Starter | 10 | |
| tashte | Great Snakes | 3 | |
| tashte | Finding Flags | 2 | |
| StrongTiger64 | Hex | 5 | |
| StrongTiger64 | ASCII | 5 | |
| fd | Unencryptable | 125 | |
| StrongTiger64 | Great Snakes | 3 | |
| Damz | Finding Flags | 2 | |
| ru57yc4n0n | Modular Arithmetic 1 | 20 | |
| StrongTiger64 | Finding Flags | 2 | |
| r3xdj | Adrien's Signs | 80 | |
| marcofireball84 | ProSign 3 | 100 | |
| ru57yc4n0n | Extended GCD | 20 | |
| tazkia | You either know, XOR you don't | 30 | |
| tazkia | Favourite byte | 20 | |
| tazkia | XOR Properties | 15 | |
| tazkia | XOR Starter | 10 | |
| sixsquareAI | ECLCG (HITCON CTF) | 0 | |
| tazkia | Bytes and Big Integers | 10 | |
| thanosss | Passwords as Keys | 50 | |
| Nataliia_R | Bytes and Big Integers | 10 | |
| thewhitewolf | ASCII | 5 | |
| tazkia | Base64 | 10 | |
| wiz1106 | Modes of Operation Starter | 15 | |
| tazkia | Hex | 5 | |
| GALIH | Legendre Symbol | 35 | |
| tazkia | ASCII | 5 | |
| thewhitewolf | Great Snakes | 3 | |
| thanosss | Modes of Operation Starter | 15 | |
| IlliaVelikdanov | Moving Problems | 150 | |
| IlliaVelikdanov | ProSign 3 | 100 | |
| IlliaVelikdanov | Curveball | 100 |
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