| Date | User | Challenge | Score |
| Abstract | Efficient Exchange | 50 | |
| amctl | XOR Starter | 10 | |
| Fderios | Finding Flags | 2 | |
| BlackSwan3 | Extended GCD | 20 | |
| j3j | Resisting Bruteforce | 10 | |
| 0xdelphine404 | Bytes and Big Integers | 10 | |
| alessandradieffe | ASCII | 5 | |
| Krat05 | Great Snakes | 3 | |
| mp_the_op | Lemur XOR | 40 | |
| amctl | Bytes and Big Integers | 10 | |
| j3j | Keyed Permutations | 5 | |
| Frederic | Finding Flags | 2 | |
| M93 | Quadratic Residues | 25 | |
| stc15 | Resisting Bruteforce | 10 | |
| changmaorui | Base64 | 10 | |
| EMIRSHUNKOV | You either know, XOR you don't | 30 | |
| Wiz | Hex | 5 | |
| alessandradieffe | Great Snakes | 3 | |
| EMIRSHUNKOV | Favourite byte | 20 | |
| alessandradieffe | Finding Flags | 2 | |
| EMIRSHUNKOV | XOR Properties | 15 | |
| EMIRSHUNKOV | XOR Starter | 10 | |
| EMIRSHUNKOV | Bytes and Big Integers | 10 | |
| stc15 | Keyed Permutations | 5 | |
| EMIRSHUNKOV | Base64 | 10 | |
| Githaigaa | Great Snakes | 3 | |
| kurumi_ | Rhetorical Oracle 2 | 150 | |
| Wiz | ASCII | 5 | |
| Wiz | Great Snakes | 3 | |
| Albert26 | RSA Decryption | 20 | |
| EMIRSHUNKOV | Hex | 5 | |
| Wiz | Finding Flags | 2 | |
| changmaorui | Hex | 5 | |
| shevi | Hex | 5 | |
| EMIRSHUNKOV | ASCII | 5 | |
| EMIRSHUNKOV | Great Snakes | 3 | |
| amctl | Base64 | 10 | |
| Tieuhoasinh | Modular Arithmetic 2 | 20 | |
| prime_e1ght | Bean Counter | 60 | |
| prime_e1ght | Symmetry | 50 | |
| prime_e1ght | Flipping Cookie | 60 | |
| amctl | Hex | 5 | |
| prime_e1ght | ECB CBC WTF | 55 | |
| EMIRSHUNKOV | Finding Flags | 2 | |
| prime_e1ght | ECB Oracle | 60 | |
| albantor30 | Curves and Logs | 40 | |
| amctl | ASCII | 5 | |
| amctl | Great Snakes | 3 | |
| amctl | Finding Flags | 2 | |
| changmaorui | ASCII | 5 |
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