| Date | User | Challenge | Score |
| Chetalam | Keyed Permutations | 5 | |
| iniM0n | Manyprime | 40 | |
| R3vangeline | Hex | 5 | |
| magda_almpani | Parameter Injection | 60 | |
| aapsemiordoenus | Encoding Challenge | 40 | |
| R3vangeline | ASCII | 5 | |
| R3vangeline | Great Snakes | 3 | |
| sdigs | Greatest Common Divisor | 15 | |
| iniM0n | Monoprime | 30 | |
| R3vangeline | Finding Flags | 2 | |
| artemis14 | Finding Flags | 2 | |
| TMSKB | Euler's Totient | 20 | |
| monkeyDluffy | Transparency | 50 | |
| iniM0n | Factoring | 15 | |
| AlvaroPardo | Modes of Operation Starter | 15 | |
| TMSKB | Public Keys | 15 | |
| mattitarkkonen | Resisting Bruteforce | 10 | |
| AlvaroPardo | Bringing It All Together | 50 | |
| TMSKB | Modular Exponentiation | 10 | |
| mightygibbon | Montgomery's Ladder | 40 | |
| Sharan07 | Structure of AES | 15 | |
| iniM0n | RSA Signatures | 25 | |
| mattitarkkonen | Hex | 5 | |
| Tabbang | Gotta Go Fast | 40 | |
| Arvis | Substitution Cipher III (DownUnderCTF) | 0 | |
| AlvaroPardo | Diffusion through Permutation | 30 | |
| iniM0n | RSA Decryption | 20 | |
| Arvis | Tenet: The Plagarism (HKCERT CTF) | 0 | |
| iniM0n | Private Keys | 20 | |
| iniM0n | Euler's Totient | 20 | |
| AlvaroPardo | Confusion through Substitution | 25 | |
| iniM0n | Public Keys | 15 | |
| iniM0n | Modular Exponentiation | 10 | |
| ZXYzxy | You either know, XOR you don't | 30 | |
| ZXYzxy | Favourite byte | 20 | |
| administrator___ | Modular Inverting | 25 | |
| ValT | Flipping Cookie | 60 | |
| iniM0n | Bean Counter | 60 | |
| iniM0n | Symmetry | 50 | |
| magda_almpani | Deriving Symmetric Keys | 40 | |
| Nomanur | Bytes and Big Integers | 10 | |
| cityzen | ECB Oracle | 60 | |
| Duvim | Great Snakes | 3 | |
| Duvim | Finding Flags | 2 | |
| administrator___ | Modular Arithmetic 2 | 20 | |
| iniM0n | Flipping Cookie | 60 | |
| iniM0n | ECB CBC WTF | 55 | |
| fri3m4 | Public Keys | 15 | |
| iniM0n | ECB Oracle | 60 | |
| svt | ASCII | 5 |
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