| Date | User | Challenge | Score |
| serge133 | XOR Properties | 15 | |
| DohnTay | Favourite byte | 20 | |
| catalin_munteanu | Infinite Descent | 50 | |
| n0gr3p | Base64 | 10 | |
| jossepmil | Extended GCD | 20 | |
| jossepmil | Greatest Common Divisor | 15 | |
| eryk1343 | Structure of AES | 15 | |
| zeroday651 | Resisting Bruteforce | 10 | |
| jossepmil | Favourite byte | 20 | |
| DohnTay | XOR Properties | 15 | |
| n0gr3p | Hex | 5 | |
| eryk1343 | Resisting Bruteforce | 10 | |
| kaisersort | Modular Arithmetic 2 | 20 | |
| Rugi | Favourite byte | 20 | |
| Kriz | Static Client 2 | 120 | |
| kaisersort | Modular Arithmetic 1 | 20 | |
| Rugi | XOR Properties | 15 | |
| n0gr3p | ASCII | 5 | |
| n0gr3p | Great Snakes | 3 | |
| n0gr3p | Finding Flags | 2 | |
| eryk1343 | Keyed Permutations | 5 | |
| DohnTay | XOR Starter | 10 | |
| jotaghz | Mister Saplin's Preview | 80 | |
| jotaghz | Oracular Spectacular | 150 | |
| kaisersort | Extended GCD | 20 | |
| kaisersort | Greatest Common Divisor | 15 | |
| DohnTay | Bytes and Big Integers | 10 | |
| CamilleFerros | JWT Secrets | 25 | |
| salem616 | XOR Starter | 10 | |
| CamilleFerros | No Way JOSE | 20 | |
| ayoub04 | Inferius Prime | 30 | |
| ayoub04 | Square Eyes | 35 | |
| K11 | Bruce Schneier's Password: Part 2 | 250 | |
| CamilleFerros | JWT Sessions | 10 | |
| l7miz_ED | Bytes and Big Integers | 10 | |
| CamilleFerros | Token Appreciation | 5 | |
| aleksandra471 | Secure Protocols | 5 | |
| l7miz_ED | Base64 | 10 | |
| l7miz_ED | Hex | 5 | |
| OaksAd | Secure Protocols | 5 | |
| shadowguy | Bounded Noise | 50 | |
| l7miz_ED | ASCII | 5 | |
| crypto_exercise | Bytes and Big Integers | 10 | |
| AM0GUS | Base64 | 10 | |
| catalin_munteanu | Everything is Still Big | 100 | |
| l7miz_ED | Great Snakes | 3 | |
| l7miz_ED | Finding Flags | 2 | |
| catalin_munteanu | Crossed Wires | 100 | |
| ubercustomer1337 | Greatest Common Divisor | 15 | |
| catalin_munteanu | Everything is Big | 70 |
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