| Date | User | Challenge | Score |
| montaoo | Decrypting TLS 1.3 | 35 | |
| Mateusz_Chech | CTRIME | 70 | |
| piotrjacak | Salty | 20 | |
| yasom2000 | Modular Arithmetic 1 | 20 | |
| piotrjacak | Manyprime | 40 | |
| ZanePlayer | Quadratic Residues | 25 | |
| Mateusz_Chech | Bean Counter | 60 | |
| Romyna | Size and Basis | 15 | |
| mio_norn124 | XOR Starter | 10 | |
| Mateusz_Chech | Symmetry | 50 | |
| pafcio | Symmetry | 50 | |
| Mateusz_Chech | Triple DES | 60 | |
| W4Z_1R4Z | You either know, XOR you don't | 30 | |
| ZanePlayer | Modular Inverting | 25 | |
| Azeflow | Great Snakes | 3 | |
| afonsomap | XOR Starter | 10 | |
| mio_norn124 | Bytes and Big Integers | 10 | |
| Azeflow | Finding Flags | 2 | |
| afonsomap | Bytes and Big Integers | 10 | |
| omelet | Fast Primes | 75 | |
| Lethios | JSON in JSON | 40 | |
| Romyna | Backpack Cryptography | 120 | |
| CCcat | Smooth Criminal | 60 | |
| TSL | Greatest Common Divisor | 15 | |
| ChrisTls | Authenticated Handshake | 40 | |
| piotrjacak | Square Eyes | 35 | |
| Mateusz_Chech | Lazy CBC | 60 | |
| Lethios | RSA or HMAC? | 35 | |
| Mateusz_Chech | Flipping Cookie | 60 | |
| Mateusz_Chech | ECB Oracle | 60 | |
| Romyna | Find the Lattice | 100 | |
| Mateusz_Chech | ECB CBC WTF | 55 | |
| Mateusz_Chech | Passwords as Keys | 50 | |
| ved_007 | Modes of Operation Starter | 15 | |
| Hardodziobik | Static Client 2 | 120 | |
| Hardodziobik | Additive | 70 | |
| Hardodziobik | Static Client | 100 | |
| Hardodziobik | Export-grade | 100 | |
| Hardodziobik | Parameter Injection | 60 | |
| Mateusz_Chech | Modes of Operation Starter | 15 | |
| Hardodziobik | Deriving Symmetric Keys | 40 | |
| Hardodziobik | Computing Shared Secrets | 30 | |
| Hardodziobik | Computing Public Values | 25 | |
| Lethios | JWT Secrets | 25 | |
| TSL | Lemur XOR | 40 | |
| piotrjacak | Monoprime | 30 | |
| Cookie2612 | Favourite byte | 20 | |
| Lethios | JWT Sessions | 10 | |
| piotrjacak | Inferius Prime | 30 | |
| Cookie2612 | XOR Properties | 15 |
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