| Date | User | Challenge | Score |
| h0lys41nt | ASCII | 5 | |
| kai2006 | No Leaks | 100 | |
| fantom | Base64 | 10 | |
| 1111seeya | Stream of Consciousness | 80 | |
| kriTTika | Base64 | 10 | |
| alright | Scalar Multiplication | 35 | |
| h0lys41nt | Great Snakes | 3 | |
| Sarvar | Base64 | 10 | |
| h0lys41nt | Finding Flags | 2 | |
| FrancoMS4456 | Base64 | 10 | |
| rfmph | Logon Zero | 80 | |
| 1111seeya | CTRIME | 70 | |
| fantom | Hex | 5 | |
| countryplaza | ASCII | 5 | |
| fantom | ASCII | 5 | |
| 1111seeya | Bean Counter | 60 | |
| k8nbit | Confusion through Substitution | 25 | |
| alright | Point Addition | 30 | |
| fantom | Great Snakes | 3 | |
| fantom | Finding Flags | 2 | |
| countryplaza | Great Snakes | 3 | |
| hllrw | Hash Stuffing | 50 | |
| FrancoMS4456 | Hex | 5 | |
| countryplaza | Finding Flags | 2 | |
| FrancoMS4456 | ASCII | 5 | |
| kriTTika | Hex | 5 | |
| kriTTika | ASCII | 5 | |
| k8nbit | Round Keys | 20 | |
| k8nbit | Structure of AES | 15 | |
| FrancoMS4456 | Great Snakes | 3 | |
| FrancoMS4456 | Finding Flags | 2 | |
| k8nbit | Resisting Bruteforce | 10 | |
| alright | Point Negation | 10 | |
| jjoon1122 | Greatest Common Divisor | 15 | |
| alright | Background Reading | 5 | |
| k8nbit | Keyed Permutations | 5 | |
| Kran | Token Appreciation | 5 | |
| 1111seeya | Symmetry | 50 | |
| Jellalakt | Passwords as Keys | 50 | |
| k4ust1c | ASCII | 5 | |
| Jellalakt | Working with Fields | 10 | |
| Knaz | Finding Flags | 2 | |
| k4ust1c | Great Snakes | 3 | |
| Smoggy | Quadratic Residues | 25 | |
| 1111seeya | Resisting Bruteforce | 10 | |
| k4ust1c | Finding Flags | 2 | |
| 1111seeya | Keyed Permutations | 5 | |
| k8nbit | You either know, XOR you don't | 30 | |
| k8nbit | Favourite byte | 20 | |
| k8nbit | XOR Properties | 15 |
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