| Date | User | Challenge | Score |
| UGOTTHEBIGL | Collider | 50 | |
| meisterdieb555 | ASCII | 5 | |
| BillGerald | ECB Oracle | 60 | |
| Kazum1244 | Token Appreciation | 5 | |
| ITG007 | ASCII | 5 | |
| EveN | Quadratic Residues | 25 | |
| mm302 | Flipping Cookie | 60 | |
| ITG007 | Great Snakes | 3 | |
| OSI_SPECTER | Base64 | 10 | |
| ITG007 | Finding Flags | 2 | |
| anon40 | ASCII | 5 | |
| hellooooowww | Saying Hello | 20 | |
| Janarthanan | Modular Inverting | 25 | |
| hellooooowww | Megalomaniac 1 | 100 | |
| hellooooowww | Megalomaniac 3 | 120 | |
| hellooooowww | Megalomaniac 2 | 120 | |
| anon40 | Great Snakes | 3 | |
| MinhThien | Nothing Up My Sleeve | 150 | |
| krisztian | Greatest Common Divisor | 15 | |
| anon40 | Finding Flags | 2 | |
| MinhThien | Lo-Hi Card Game | 120 | |
| hellooooowww | Decrypting TLS 1.2 | 30 | |
| hellooooowww | RSA or HMAC? | 35 | |
| MinhThien | No Leaks | 100 | |
| MinhThien | Gotta Go Fast | 40 | |
| rare | Bytes and Big Integers | 10 | |
| MinhThien | Prime and Prejudice | 200 | |
| toxicafunk | Finding Flags | 2 | |
| racon | Marin's Secrets | 50 | |
| GiuseppeA | Adrien's Signs | 80 | |
| hellooooowww | Noise Cheap | 90 | |
| MinhThien | Real Eisenstein | 150 | |
| hellooooowww | Too Many Errors | 100 | |
| rare | Base64 | 10 | |
| krisztian | You either know, XOR you don't | 30 | |
| hellooooowww | Missing Modulus | 80 | |
| MinhThien | Cofactor Cofantasy | 150 | |
| chelinh | Infinite Descent | 50 | |
| krisztian | Favourite byte | 20 | |
| krisztian | XOR Properties | 15 | |
| rare | Hex | 5 | |
| MinhThien | Unencryptable | 125 | |
| MinhThien | Roll your Own | 125 | |
| MinhThien | Ellipse Curve Cryptography | 125 | |
| GiuseppeA | Chinese Remainder Theorem | 40 | |
| krisztian | XOR Starter | 10 | |
| meisterdieb555 | Great Snakes | 3 | |
| toughguy | XOR Properties | 15 | |
| yyfsec | Extended GCD | 20 | |
| rare | ASCII | 5 |
You are now level Current level