| Date | User | Challenge | Score |
| dapa_ayayyy | Great Snakes | 3 | |
| mathical0732 | Efficient Exchange | 50 | |
| chefi | ASCII | 5 | |
| dapa_ayayyy | Finding Flags | 2 | |
| ripplex76 | Public Keys | 15 | |
| ripplex76 | Modular Exponentiation | 10 | |
| chefi | Network Attacks | 5 | |
| HighestClimber | Euler's Totient | 20 | |
| Buddies | Extended GCD | 20 | |
| Zzy113 | ASCII | 5 | |
| jarhead2102 | Greatest Common Divisor | 15 | |
| Zzy113 | Great Snakes | 3 | |
| jarhead2102 | You either know, XOR you don't | 30 | |
| jarhead2102 | Favourite byte | 20 | |
| Buddies | Greatest Common Divisor | 15 | |
| jarhead2102 | XOR Properties | 15 | |
| jarhead2102 | XOR Starter | 10 | |
| jarhead2102 | Quadratic Residues | 25 | |
| Buddies | You either know, XOR you don't | 30 | |
| ox1bx | RSA or HMAC? Part 2 | 100 | |
| afsc19 | You either know, XOR you don't | 30 | |
| afsc19 | Favourite byte | 20 | |
| afsc19 | XOR Properties | 15 | |
| afsc19 | XOR Starter | 10 | |
| afsc19 | Bytes and Big Integers | 10 | |
| AP2451 | Hex | 5 | |
| ox1bx | Secure Protocols | 5 | |
| afsc19 | Base64 | 10 | |
| afsc19 | Hex | 5 | |
| afsc19 | ASCII | 5 | |
| afsc19 | Great Snakes | 3 | |
| ox1bx | TLS Handshake | 15 | |
| afsc19 | Finding Flags | 2 | |
| ox1bx | Sharks on the Wire | 10 | |
| AP2451 | ASCII | 5 | |
| AP2451 | Great Snakes | 3 | |
| kenari | Modular Arithmetic 1 | 20 | |
| k3v1n4rsk | Greatest Common Divisor | 15 | |
| mephyt | ASCII | 5 | |
| mephyt | Great Snakes | 3 | |
| mephyt | Finding Flags | 2 | |
| chefi | Great Snakes | 3 | |
| chefi | Finding Flags | 2 | |
| k3v1n4rsk | You either know, XOR you don't | 30 | |
| chelinh | RSA Decryption | 20 | |
| mathical0732 | Curves and Logs | 40 | |
| aldboraldbor14 | Finding Flags | 2 | |
| chelinh | Private Keys | 20 | |
| mathical0732 | Scalar Multiplication | 35 | |
| dasa | Greatest Common Divisor | 15 |
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