| Date | User | Challenge | Score |
| olexenn | You either know, XOR you don't | 30 | |
| burnthewitch | Favourite byte | 20 | |
| Lagg0s | Base64 | 10 | |
| princebabywhite | Finding Flags | 2 | |
| burnthewitch | XOR Properties | 15 | |
| lucy54 | Paper Plane | 120 | |
| kikipaul | Factoring | 15 | |
| Lychee_Doggo | Modular Inverting | 25 | |
| g3k1 | MD0 | 80 | |
| burnthewitch | XOR Starter | 10 | |
| olexenn | Favourite byte | 20 | |
| burnthewitch | Bytes and Big Integers | 10 | |
| kikipaul | RSA Signatures | 25 | |
| monkclock | Finding Flags | 2 | |
| Duckart | Resisting Bruteforce | 10 | |
| g3k1 | No Difference | 175 | |
| burnthewitch | Base64 | 10 | |
| Duckart | Keyed Permutations | 5 | |
| burnthewitch | Hex | 5 | |
| burnthewitch | ASCII | 5 | |
| burnthewitch | Great Snakes | 3 | |
| burnthewitch | Finding Flags | 2 | |
| olexenn | XOR Properties | 15 | |
| g3k1 | Twin Keys | 100 | |
| Lagg0s | Hex | 5 | |
| Nataliia_R | Parameter Injection | 60 | |
| isabellavansloot | You either know, XOR you don't | 30 | |
| isabellavansloot | Favourite byte | 20 | |
| kikipaul | RSA Decryption | 20 | |
| TheMax | Great Snakes | 3 | |
| g3k1 | PriMeD5 | 100 | |
| tortoiseseadonut | Chinese Remainder Theorem | 40 | |
| Duckart | Successive Powers | 60 | |
| olexenn | XOR Starter | 10 | |
| Arkjantos0212 | Great Snakes | 3 | |
| sunflowerpretty | Finding Flags | 2 | |
| Curso23 | Great Snakes | 3 | |
| Sparta2993 | Great Snakes | 3 | |
| olexenn | Bytes and Big Integers | 10 | |
| halloweengoosegn | Base64 | 10 | |
| Arkjantos0212 | Network Attacks | 5 | |
| Curso23 | Network Attacks | 5 | |
| KP81993 | Finding Flags | 2 | |
| g3k1 | Hash Stuffing | 50 | |
| Arkjantos0212 | Finding Flags | 2 | |
| TheMax | Finding Flags | 2 | |
| Sparta2993 | Finding Flags | 2 | |
| Curso23 | Finding Flags | 2 | |
| Duckart | Point Negation | 10 | |
| mahayg | Great Snakes | 3 |
You are now level Current level