| Date | User | Challenge | Score |
| yrighting | Modular Arithmetic 1 | 20 | |
| zhubat | Computing Public Values | 25 | |
| B1ckb3etl3 | You either know, XOR you don't | 30 | |
| B1ckb3etl3 | Favourite byte | 20 | |
| zzm | Legendre Symbol | 35 | |
| B1ckb3etl3 | XOR Properties | 15 | |
| lalo404 | Legendre Symbol | 35 | |
| Kanad3 | Confusion through Substitution | 25 | |
| Xirius | Chinese Remainder Theorem | 40 | |
| B1ckb3etl3 | XOR Starter | 10 | |
| B1ckb3etl3 | Bytes and Big Integers | 10 | |
| Kanad3 | Round Keys | 20 | |
| aizer3 | Modular Inverting | 25 | |
| yrighting | Extended GCD | 20 | |
| Vinjr | The Matrix Revolutions | 125 | |
| B1ckb3etl3 | Base64 | 10 | |
| Kanad3 | Structure of AES | 15 | |
| aizer3 | Modular Arithmetic 2 | 20 | |
| rlaskadn | XOR Starter | 10 | |
| B1ckb3etl3 | Hex | 5 | |
| aizer3 | Modular Arithmetic 1 | 20 | |
| shshshshsh888 | XOR Starter | 10 | |
| rlaskadn | Bytes and Big Integers | 10 | |
| B1ckb3etl3 | ASCII | 5 | |
| tyluudinh | Secure Protocols | 5 | |
| tyluudinh | Authenticated Handshake | 40 | |
| tyluudinh | Decrypting TLS 1.3 | 35 | |
| tyluudinh | Decrypting TLS 1.2 | 30 | |
| tyluudinh | Saying Hello | 20 | |
| tyluudinh | TLS Handshake | 15 | |
| tyluudinh | Sharks on the Wire | 10 | |
| Xirius | Modular Square Root | 35 | |
| tyluudinh | JSON in JSON | 40 | |
| tyluudinh | RSA or HMAC? | 35 | |
| tyluudinh | JWT Secrets | 25 | |
| tyluudinh | No Way JOSE | 20 | |
| tyluudinh | JWT Sessions | 10 | |
| tyluudinh | Token Appreciation | 5 | |
| exoq | Monoprime | 30 | |
| shshshshsh888 | Bytes and Big Integers | 10 | |
| rlaskadn | Base64 | 10 | |
| rlaskadn | Hex | 5 | |
| B1ckb3etl3 | Great Snakes | 3 | |
| rlaskadn | ASCII | 5 | |
| yrighting | Greatest Common Divisor | 15 | |
| rlaskadn | Great Snakes | 3 | |
| rlaskadn | Finding Flags | 2 | |
| cipherBox08 | Background Reading | 5 | |
| 0xs1nr | Oracular Spectacular | 150 | |
| shshshshsh888 | Base64 | 10 |
You are now level Current level