| Date | User | Challenge | Score |
| ahmqd | MDFlag | 125 | |
| sabbir | Resisting Bruteforce | 10 | |
| sabbir | Keyed Permutations | 5 | |
| kosynus | You either know, XOR you don't | 30 | |
| kosynus | Favourite byte | 20 | |
| sukhoi57 | Resisting Bruteforce | 10 | |
| kosynus | XOR Properties | 15 | |
| Jaandroo | XOR Starter | 10 | |
| Jaandroo | Bytes and Big Integers | 10 | |
| crypto_14118198 | Bytes and Big Integers | 10 | |
| sabbir | Quadratic Residues | 25 | |
| kosynus | XOR Starter | 10 | |
| kosynus | Bytes and Big Integers | 10 | |
| ld1808 | Base64 | 10 | |
| crypto_14118198 | Base64 | 10 | |
| Jaandroo | Base64 | 10 | |
| Dr1o02 | Computing Shared Secrets | 30 | |
| Jaandroo | Hex | 5 | |
| ld1808 | Hex | 5 | |
| Jaandroo | ASCII | 5 | |
| Jaandroo | Great Snakes | 3 | |
| Jaandroo | Finding Flags | 2 | |
| ld1808 | ASCII | 5 | |
| ld1808 | Great Snakes | 3 | |
| kosynus | Base64 | 10 | |
| sabbir | Modular Inverting | 25 | |
| ld1808 | Finding Flags | 2 | |
| kosynus | Hex | 5 | |
| kosynus | ASCII | 5 | |
| sukhoi57 | Keyed Permutations | 5 | |
| soec | Hex | 5 | |
| ubercustomer1337 | Background Reading | 5 | |
| kosynus | Great Snakes | 3 | |
| kosynus | Finding Flags | 2 | |
| crypto_14118198 | Hex | 5 | |
| Patricklaroque | Finding Flags | 2 | |
| sakib65 | XOR Properties | 15 | |
| Patricklaroque | Hex | 5 | |
| Patricklaroque | ASCII | 5 | |
| Romyna | Oracular Spectacular | 150 | |
| ClockUwU | Beatboxer | 150 | |
| tera | Ellipse Curve Cryptography | 125 | |
| ndankar | ASCII | 5 | |
| soec | ASCII | 5 | |
| Dr1o02 | What's a Lattice? | 40 | |
| valh4x | Modular Binomials | 80 | |
| soec | Great Snakes | 3 | |
| soec | Finding Flags | 2 | |
| valh4x | No Way Back Home | 100 | |
| valh4x | Broken RSA | 100 |
You are now level Current level