| Date | User | Challenge | Score |
| ttori | Finding Flags | 2 | |
| m4n059 | Round Keys | 20 | |
| ctm31 | Triple DES | 60 | |
| fr1x3r | Network Attacks | 5 | |
| maximafreiman | Hex | 5 | |
| ctm31 | RSA or HMAC? | 35 | |
| Gabriel4804 | Great Snakes | 3 | |
| ctm31 | JWT Secrets | 25 | |
| Gabriel4804 | Finding Flags | 2 | |
| CY63Rx31173 | You either know, XOR you don't | 30 | |
| BetoCuevas | Finding Flags | 2 | |
| 4thCORSman | Greatest Common Divisor | 15 | |
| Akpa2306 | Extended GCD | 20 | |
| m4n059 | Structure of AES | 15 | |
| hafsa | Base64 | 10 | |
| hafsa | Hex | 5 | |
| hafsa | ASCII | 5 | |
| hafsa | Great Snakes | 3 | |
| hafsa | Finding Flags | 2 | |
| gchiu02 | Logon Zero | 80 | |
| gchiu02 | CTRIME | 70 | |
| gchiu02 | Bean Counter | 60 | |
| gchiu02 | Symmetry | 50 | |
| Zer0xt | Great Snakes | 3 | |
| gchiu02 | Triple DES | 60 | |
| gchiu02 | Lazy CBC | 60 | |
| gchiu02 | Flipping Cookie | 60 | |
| Zer0xt | Finding Flags | 2 | |
| gchiu02 | ECB Oracle | 60 | |
| gchiu02 | ECB CBC WTF | 55 | |
| LumpyChump | RSA Backdoor Viability | 175 | |
| LumpyChump | Ron was Wrong, Whit is Right | 90 | |
| Z1ad3hab | You either know, XOR you don't | 30 | |
| Z1ad3hab | Favourite byte | 20 | |
| ctm31 | JWT Sessions | 10 | |
| CY63Rx31173 | Favourite byte | 20 | |
| guyanyong | ECB CBC WTF | 55 | |
| Z1ad3hab | XOR Properties | 15 | |
| ctm31 | Token Appreciation | 5 | |
| Nenaah | Authentification 2 (Breizh CTF) | 0 | |
| Z1ad3hab | XOR Starter | 10 | |
| norahamu | Favourite byte | 20 | |
| fr1x3r | Export-grade | 100 | |
| toad | Successive Powers | 60 | |
| maximafreiman | ASCII | 5 | |
| CY63Rx31173 | XOR Properties | 15 | |
| sp1n0z4 | Base64 | 10 | |
| PAWOS | Export-grade | 100 | |
| maximafreiman | Great Snakes | 3 | |
| pyr0 | Invariant | 250 |
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