| Date | User | Challenge | Score |
| javierlnmn | Base64 | 10 | |
| hamzaALkhouly | Encoding Challenge | 40 | |
| starwalkinglty | Ron was Wrong, Whit is Right | 90 | |
| MidoS3d | Curveball | 100 | |
| c0met | Manyprime | 40 | |
| javierlnmn | Hex | 5 | |
| hokoma | Base64 | 10 | |
| ApfelStrudel | Passwords as Keys | 50 | |
| D4em0n | Quadratic Residues | 25 | |
| songhyunho1 | Monoprime | 30 | |
| javierlnmn | ASCII | 5 | |
| manar | Secure Protocols | 5 | |
| c0met | Monoprime | 30 | |
| manar | JSON in JSON | 40 | |
| manar | RSA or HMAC? | 35 | |
| javierlnmn | Great Snakes | 3 | |
| c0met | Factoring | 15 | |
| songhyunho1 | Factoring | 15 | |
| manar | JWT Sessions | 10 | |
| javierlnmn | Finding Flags | 2 | |
| songhyunho1 | RSA Decryption | 20 | |
| c0met | RSA Decryption | 20 | |
| manar | No Way JOSE | 20 | |
| c0met | Private Keys | 20 | |
| songhyunho1 | Private Keys | 20 | |
| bluesky2113 | Generators of Groups | 20 | |
| manar | Token Appreciation | 5 | |
| c0met | Euler's Totient | 20 | |
| songhyunho1 | Euler's Totient | 20 | |
| songhyunho1 | Public Keys | 15 | |
| c0met | Public Keys | 15 | |
| hokoma | Hex | 5 | |
| saba | Extended GCD | 20 | |
| D4em0n | Modular Inverting | 25 | |
| Thaimeo2006 | OR Proof | 75 | |
| hokoma | ASCII | 5 | |
| Thaimeo2006 | OR Proof (CryptoHack) | 0 | |
| That11thHarmonic | Bounded Noise | 50 | |
| c0met | Modular Exponentiation | 10 | |
| songhyunho1 | Modular Exponentiation | 10 | |
| SeifAhmed | Mister Saplins The Prover | 125 | |
| D4em0n | Modular Arithmetic 2 | 20 | |
| D4em0n | Modular Arithmetic 1 | 20 | |
| hokoma | Network Attacks | 5 | |
| galchapman | Decrypting TLS 1.3 | 35 | |
| hata | Ticket Maestro | 200 | |
| hata | Ticket Maestro (CryptoHack) | 0 | |
| Shawtysri7 | Euler's Totient | 20 | |
| gnomeright | No Way Back Home | 100 | |
| galchapman | Decrypting TLS 1.2 | 30 |
You are now level Current level