| Date | User | Challenge | Score |
| neo001 | XOR Starter | 10 | |
| 00xCanelo | Modulus Inutilis | 50 | |
| neo001 | Bytes and Big Integers | 10 | |
| omar_tkito | XOR Starter | 10 | |
| 00xCanelo | Salty | 20 | |
| Lucen | Favourite byte | 20 | |
| AyoubIDSI | Base64 | 10 | |
| gamer_498571 | Great Snakes | 3 | |
| starbinhas | Legendre Symbol | 35 | |
| gamer_498571 | Finding Flags | 2 | |
| cyberri | Non-Interactive | 35 | |
| poxin88547 | Greatest Common Divisor | 15 | |
| yendi77 | Round Keys | 20 | |
| ikriqd | Bytes and Big Integers | 10 | |
| yendi77 | Structure of AES | 15 | |
| omar_tkito | Bytes and Big Integers | 10 | |
| yendi77 | Resisting Bruteforce | 10 | |
| Lucen | XOR Properties | 15 | |
| PapyRuss | Extended GCD | 20 | |
| benjamin97419ben | Finding Flags | 2 | |
| yendi77 | Keyed Permutations | 5 | |
| tigerBoss101 | Modes of Operation Starter | 15 | |
| CBUBCIZK | Diffusion through Permutation | 30 | |
| adamjr11 | RSA Decryption | 20 | |
| adagbla | Modular Inverting | 25 | |
| tigerBoss101 | Bringing It All Together | 50 | |
| CYCcc | Legendre Symbol | 35 | |
| elizabeth00012 | Great Snakes | 3 | |
| CBUBCIZK | Confusion through Substitution | 25 | |
| omar_tkito | Base64 | 10 | |
| ikriqd | Base64 | 10 | |
| AyoubIDSI | Hex | 5 | |
| Jach | Base64 | 10 | |
| ProgrammeChemist | XOR Starter | 10 | |
| interrupt | Greatest Common Divisor | 15 | |
| adagbla | Modular Arithmetic 2 | 20 | |
| 00xCanelo | Manyprime | 40 | |
| neo001 | Base64 | 10 | |
| AyoubIDSI | ASCII | 5 | |
| omar_tkito | Hex | 5 | |
| ikriqd | Hex | 5 | |
| Lucen | XOR Starter | 10 | |
| CBUBCIZK | Round Keys | 20 | |
| madsek | RSA Signatures | 25 | |
| ltwind_v2 | Decrypting TLS 1.2 | 30 | |
| tigerBoss101 | Diffusion through Permutation | 30 | |
| neo001 | Hex | 5 | |
| ProgrammeChemist | Bytes and Big Integers | 10 | |
| omar_tkito | ASCII | 5 | |
| QwQll | Successive Powers | 60 |
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