| Date | User | Challenge | Score |
| ynwa_ | Monoprime | 30 | |
| 4rul23 | Monoprime | 30 | |
| Asim_kk | Dancing Queen | 120 | |
| 4rul23 | Factoring | 15 | |
| Rink434597593756 | Great Snakes | 3 | |
| Demigod | Bytes and Big Integers | 10 | |
| starcoil | Great Snakes | 3 | |
| Asim_kk | Stream of Consciousness | 80 | |
| Rink434597593756 | Finding Flags | 2 | |
| Gerund | Favourite byte | 20 | |
| jdkko | Base64 | 10 | |
| 4rul23 | RSA Signatures | 25 | |
| Demigod | Base64 | 10 | |
| starcoil | Finding Flags | 2 | |
| Demigod | Hex | 5 | |
| 4rul23 | RSA Decryption | 20 | |
| vas564 | Finding Flags | 2 | |
| Asim_kk | Logon Zero | 80 | |
| anhsaoleloi | Modular Square Root | 35 | |
| 4rul23 | Euler's Totient | 20 | |
| Demigod | ASCII | 5 | |
| 4rul23 | Public Keys | 15 | |
| Asim_kk | CTRIME | 70 | |
| khanhdc7 | Chinese Remainder Theorem | 40 | |
| 4rul23 | Modular Exponentiation | 10 | |
| Demigod | Great Snakes | 3 | |
| Demigod | Finding Flags | 2 | |
| ynwa_ | Factoring | 15 | |
| acrolein | Base64 | 10 | |
| ynwa_ | RSA Signatures | 25 | |
| acrolein | Hex | 5 | |
| acrolein | ASCII | 5 | |
| acrolein | Great Snakes | 3 | |
| acrolein | Finding Flags | 2 | |
| Bright05 | Hex | 5 | |
| williamNah | CERTainly not | 30 | |
| ynwa_ | RSA Decryption | 20 | |
| Minh_142857 | ECB Oracle | 60 | |
| ynwa_ | Private Keys | 20 | |
| ynwa_ | Euler's Totient | 20 | |
| ynwa_ | Public Keys | 15 | |
| Leucocholia | Base64 | 10 | |
| ynwa_ | Modular Exponentiation | 10 | |
| Leucocholia | Hex | 5 | |
| williamNah | Privacy-Enhanced Mail? | 25 | |
| ZeroSecW0Day | Great Snakes | 3 | |
| Leucocholia | ASCII | 5 | |
| Leucocholia | Great Snakes | 3 | |
| Leucocholia | Finding Flags | 2 | |
| ZeroSecW0Day | Finding Flags | 2 |
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