| Date | User | Challenge | Score |
| nizarr | ECB Oracle | 60 | |
| MH58 | Modular Arithmetic 2 | 20 | |
| perlica | Structure of AES | 15 | |
| Marvin_42 | Chinese Remainder Theorem | 40 | |
| Fox2872 | Bringing It All Together | 50 | |
| Hrisha | Monoprime | 30 | |
| 3ouzal | Factoring | 15 | |
| Halgos | Greatest Common Divisor | 15 | |
| MH58 | Modular Arithmetic 1 | 20 | |
| marasdk | RSA Decryption | 20 | |
| Yahya_Mansoub | ECB Oracle | 60 | |
| yosr | Base64 | 10 | |
| zihe | Bytes and Big Integers | 10 | |
| marasdk | Private Keys | 20 | |
| Mitsouvis | Modular Arithmetic 2 | 20 | |
| Fox2872 | Diffusion through Permutation | 30 | |
| 3ouzal | RSA Signatures | 25 | |
| marasdk | Euler's Totient | 20 | |
| axelskirt | Gaussian Reduction | 50 | |
| Mitsouvis | Modular Arithmetic 1 | 20 | |
| Cyrene | Favourite byte | 20 | |
| Cyrene | XOR Properties | 15 | |
| Cyrene | XOR Starter | 10 | |
| MH58 | Extended GCD | 20 | |
| Cyrene | Bytes and Big Integers | 10 | |
| Cyrene | Base64 | 10 | |
| Cyrene | Hex | 5 | |
| Cyrene | ASCII | 5 | |
| Cyrene | Great Snakes | 3 | |
| Mitsouvis | Extended GCD | 20 | |
| Cyrene | Finding Flags | 2 | |
| chiver | Great Snakes | 3 | |
| zihe | Base64 | 10 | |
| yosr | Hex | 5 | |
| bomboclatpanos | Jack's Birthday Hash | 20 | |
| xaos333 | Encoding Challenge | 40 | |
| chiver | Finding Flags | 2 | |
| yosr | ASCII | 5 | |
| Fox2872 | Confusion through Substitution | 25 | |
| kupda | Modular Arithmetic 1 | 20 | |
| Mitsouvis | Greatest Common Divisor | 15 | |
| ameen | Keyed Permutations | 5 | |
| yosr | Great Snakes | 3 | |
| lemwin | Hex | 5 | |
| kupda | Extended GCD | 20 | |
| AtamovHamid | ASCII | 5 | |
| odb17 | Bytes and Big Integers | 10 | |
| AtamovHamid | Great Snakes | 3 | |
| yosr | Finding Flags | 2 | |
| zihe | Hex | 5 |
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