| Date | User | Challenge | Score |
| LashaG | Moving Problems | 150 | |
| aboateng124 | XOR Properties | 15 | |
| kapitano | Decrypting TLS 1.3 | 35 | |
| D1533 | Let's Decrypt Again | 175 | |
| Hell_ish | Lemur XOR | 40 | |
| dodgyyet | Bringing It All Together | 50 | |
| kapitano | Decrypting TLS 1.2 | 30 | |
| dodgyyet | Round Keys | 20 | |
| kapitano | Saying Hello | 20 | |
| dodgyyet | Structure of AES | 15 | |
| Criishermida | Finding Flags | 2 | |
| layba56Khan | Great Snakes | 3 | |
| volt | Bruce Schneier's Password | 100 | |
| Hyeyul | Exceptional Curves | 100 | |
| volt | Toshi's Treasure | 150 | |
| dodgyyet | Diffusion through Permutation | 30 | |
| volt | LFSR Destroyer | 250 | |
| volt | Armory | 100 | |
| volt | Bit by Bit | 100 | |
| volt | Trust Games | 150 | |
| volt | Noise Cheap | 90 | |
| layba56Khan | Finding Flags | 2 | |
| 4r3s | Finding Flags | 2 | |
| dodgyyet | Confusion through Substitution | 25 | |
| volt | Jeff's LFSR | 150 | |
| SupaFast | ECB CBC WTF | 55 | |
| jmusic | Structure of AES | 15 | |
| volt | L-Win | 120 | |
| Tagadasme3000 | Mister Saplin's Preview | 80 | |
| Parlish | Finding Flags | 2 | |
| strictshot | Working with Fields | 10 | |
| datasquirel | Hex | 5 | |
| Woodsman | Modular Binomials | 80 | |
| aboateng124 | XOR Starter | 10 | |
| alk3ckwd | Great Snakes | 3 | |
| Hell_ish | Encoding Challenge | 40 | |
| alk3ckwd | Finding Flags | 2 | |
| Tagadasme3000 | Noise Cheap | 90 | |
| mfp1401 | Base64 | 10 | |
| Erij_Djobbi | You either know, XOR you don't | 30 | |
| datasquirel | ASCII | 5 | |
| thisnello | Quadratic Residues | 25 | |
| lynxwfx | Great Snakes | 3 | |
| Timmeke_ | Modular Inverting | 25 | |
| mfp1401 | Hex | 5 | |
| lynxwfx | Finding Flags | 2 | |
| mfp1401 | ASCII | 5 | |
| jmusic | Resisting Bruteforce | 10 | |
| MrRaven | You either know, XOR you don't | 30 | |
| kerik | Extended GCD | 20 |
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