| Date | User | Challenge | Score |
| Hashim | You either know, XOR you don't | 30 | |
| maousi | Structure of AES | 15 | |
| night_owl | Sharks on the Wire | 10 | |
| poorlajka | You either know, XOR you don't | 30 | |
| Y0N3S | Greatest Common Divisor | 15 | |
| brembo | Parameter Injection | 60 | |
| marcok | You either know, XOR you don't | 30 | |
| poorlajka | Favourite byte | 20 | |
| marcok | Favourite byte | 20 | |
| poorlajka | XOR Properties | 15 | |
| litgift | You either know, XOR you don't | 30 | |
| maousi | Resisting Bruteforce | 10 | |
| marcok | XOR Properties | 15 | |
| twilight03 | ASCII | 5 | |
| maousi | Keyed Permutations | 5 | |
| WalterLamer | Private Keys | 20 | |
| poorlajka | XOR Starter | 10 | |
| WalterLamer | Euler's Totient | 20 | |
| WalterLamer | Public Keys | 15 | |
| night_owl | Secure Protocols | 5 | |
| poorlajka | Bytes and Big Integers | 10 | |
| WalterLamer | Modular Exponentiation | 10 | |
| jayanth0215 | ASCII | 5 | |
| jayanth0215 | Great Snakes | 3 | |
| ziriko | Modular Arithmetic 1 | 20 | |
| twilight03 | Great Snakes | 3 | |
| jayanth0215 | Finding Flags | 2 | |
| twilight03 | Finding Flags | 2 | |
| Hashim | Favourite byte | 20 | |
| brembo | Deriving Symmetric Keys | 40 | |
| brembo | Computing Shared Secrets | 30 | |
| brembo | Computing Public Values | 25 | |
| night_owl | JSON in JSON | 40 | |
| brembo | Generators of Groups | 20 | |
| brembo | Working with Fields | 10 | |
| poorlajka | Base64 | 10 | |
| brembo | Modulus Inutilis | 50 | |
| rsa444b | Export-grade | 100 | |
| brembo | Salty | 20 | |
| brembo | Manyprime | 40 | |
| snake_sss | Bytes and Big Integers | 10 | |
| rsa444b | Parameter Injection | 60 | |
| ziriko | Extended GCD | 20 | |
| poorlajka | Hex | 5 | |
| jackoha | Bruce Schneier's Password | 100 | |
| snake_sss | Base64 | 10 | |
| CyGeek | Network Attacks | 5 | |
| poorlajka | ASCII | 5 | |
| poorlajka | Great Snakes | 3 | |
| antoario | Keyed Permutations | 5 |
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