| Date | User | Challenge | Score |
| rekx | Finding Flags | 2 | |
| drnikos | Keyed Permutations | 5 | |
| kiro_ctf | Great Snakes | 3 | |
| ch4ese | Favourite byte | 20 | |
| kiro_ctf | Finding Flags | 2 | |
| ManuelS | Favourite byte | 20 | |
| shurayz | Stream of Consciousness | 80 | |
| kekhol | Base64 | 10 | |
| Roman1301 | ASCII | 5 | |
| flover | Bytes and Big Integers | 10 | |
| ElainaLover | ASCII | 5 | |
| kekhol | Hex | 5 | |
| ManuelS | XOR Properties | 15 | |
| nurminen | Forbidden Fruit | 150 | |
| aaryandaa | Hex | 5 | |
| flover | Base64 | 10 | |
| ElainaLover | Great Snakes | 3 | |
| ElainaLover | Finding Flags | 2 | |
| 44_3serR | Great Snakes | 3 | |
| 44_3serR | Finding Flags | 2 | |
| ch4ese | XOR Properties | 15 | |
| kekhol | ASCII | 5 | |
| nurminen | Paper Plane | 120 | |
| Mathinfernal | CERTainly not | 30 | |
| vcsaba | Hex | 5 | |
| 0xmrjoe | XOR Starter | 10 | |
| ch4ese | XOR Starter | 10 | |
| Histhone | Diffusion through Permutation | 30 | |
| nathaniel_nolife | Modular Arithmetic 2 | 20 | |
| andrehda | Megalomaniac 1 | 100 | |
| kekhol | Great Snakes | 3 | |
| kekhol | Finding Flags | 2 | |
| aaryandaa | ASCII | 5 | |
| jarinios | From Private to Public Key LWE | 25 | |
| kubakadlubowski | Dancing Queen | 120 | |
| IoaMertz | Jack's Birthday Hash | 20 | |
| 0xGh4zy | Modular Arithmetic 2 | 20 | |
| jarinios | LWE Low Bits Message | 20 | |
| sfo | Bringing It All Together | 50 | |
| tkalompr | Modulus Inutilis | 50 | |
| kien | XOR Properties | 15 | |
| mortin1412 | Triple DES | 60 | |
| _ThaaoBlues_ | RSA or HMAC? | 35 | |
| ale3andre | You either know, XOR you don't | 30 | |
| Mathinfernal | Privacy-Enhanced Mail? | 25 | |
| ale3andre | Resisting Bruteforce | 10 | |
| tkalompr | Salty | 20 | |
| origabai | Bruce Schneier's Password | 100 | |
| ale3andre | Keyed Permutations | 5 | |
| redMint | Logon Zero | 80 |
You are now level Current level