| Date | User | Challenge | Score |
| Vogel04 | XOR Properties | 15 | |
| MINO0939 | Great Snakes | 3 | |
| wa7di_ | Base64 | 10 | |
| MINO0939 | Finding Flags | 2 | |
| hasuke | ECB CBC WTF | 55 | |
| wa7di_ | Hex | 5 | |
| Jinx | Armory | 100 | |
| Raferior | ECB Oracle | 60 | |
| Jinx | Bit by Bit | 100 | |
| wa7di_ | ASCII | 5 | |
| WarSpore | Oh SNAP | 120 | |
| pin | Successive Powers | 60 | |
| Jinx | LFSR Destroyer | 250 | |
| TinyLean | Lazy CBC | 60 | |
| QRms | Favourite byte | 20 | |
| chec | Greatest Common Divisor | 15 | |
| Jinx | L-Win | 120 | |
| wa7di_ | Great Snakes | 3 | |
| tymbaca | Modular Inverting | 25 | |
| wa7di_ | Finding Flags | 2 | |
| sulinno | Confusion through Substitution | 25 | |
| Raferior | ECB CBC WTF | 55 | |
| Vogel04 | XOR Starter | 10 | |
| hasuke | ECB Oracle | 60 | |
| Jinx | RSA vs RNG | 150 | |
| tymbaca | Modular Arithmetic 2 | 20 | |
| QRms | XOR Properties | 15 | |
| mrtx | Great Snakes | 3 | |
| Gife380 | Hex | 5 | |
| Gife380 | ASCII | 5 | |
| mrtx | Finding Flags | 2 | |
| rolanp | You either know, XOR you don't | 30 | |
| Gife380 | Great Snakes | 3 | |
| Adwheyt | Greatest Common Divisor | 15 | |
| OmerSecure | ASCII | 5 | |
| Gife380 | Finding Flags | 2 | |
| Komasan_ | SIDH Key Exchange | 80 | |
| TinyLean | Flipping Cookie | 60 | |
| Aryaethn | The j-invariant | 20 | |
| QRms | XOR Starter | 10 | |
| cryptokiwi | Adrien's Signs | 80 | |
| Jinx | No Leaks | 100 | |
| Ba1sars | Great Snakes | 3 | |
| Ba1sars | Finding Flags | 2 | |
| Jinx | Gotta Go Fast | 40 | |
| tymbaca | Modular Arithmetic 1 | 20 | |
| 1tsRyd3r | Let's Decrypt | 80 | |
| George_Weasly | Ron was Wrong, Whit is Right | 90 | |
| sveta_shumovai | Let's Decrypt | 80 | |
| Phalcon | Base64 | 10 |
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