| Date | User | Challenge | Score |
| Tanpa_R | ASCII | 5 | |
| yungPark | Bytes and Big Integers | 10 | |
| tieuchocute | Adrien's Signs | 80 | |
| mopedist | The Matrix | 75 | |
| monk000 | Broken RSA | 100 | |
| mej | Legendre Symbol | 35 | |
| Tieuhoasinh | Great Snakes | 3 | |
| Tanpa_R | Great Snakes | 3 | |
| tieuchocute | Chinese Remainder Theorem | 40 | |
| antonio_verdu | Modular Inverting | 25 | |
| k3y_d0 | Hex | 5 | |
| k3y_d0 | ASCII | 5 | |
| guyko | Modes of Operation Starter | 15 | |
| ava_daria | You either know, XOR you don't | 30 | |
| ava_daria | Favourite byte | 20 | |
| yungPark | Base64 | 10 | |
| k3y_d0 | Great Snakes | 3 | |
| tieuchocute | Modular Square Root | 35 | |
| antonio_verdu | Modular Arithmetic 2 | 20 | |
| nabz | XOR Properties | 15 | |
| yungPark | Hex | 5 | |
| guyko | Bringing It All Together | 50 | |
| ava_daria | XOR Properties | 15 | |
| StevenSGS | ASCII | 5 | |
| stepden | Favourite byte | 20 | |
| yungPark | ASCII | 5 | |
| stepden | XOR Properties | 15 | |
| mopedist | Script Kiddie | 70 | |
| turtur | Favourite byte | 20 | |
| antonio_verdu | Modular Arithmetic 1 | 20 | |
| ava_daria | XOR Starter | 10 | |
| phomai739391 | Parameter Injection | 60 | |
| 4rul23 | Inferius Prime | 30 | |
| yungPark | Great Snakes | 3 | |
| AbdillahRifai | RSA Decryption | 20 | |
| 9mm_memphis_cult | Couples | 100 | |
| AbdillahRifai | Private Keys | 20 | |
| mrunmai | Public Keys | 15 | |
| yungPark | Finding Flags | 2 | |
| francovuga | Structure of AES | 15 | |
| ava_daria | Bytes and Big Integers | 10 | |
| kxld | RSA Decryption | 20 | |
| AbdillahRifai | Euler's Totient | 20 | |
| k3y_d0 | Finding Flags | 2 | |
| AbdillahRifai | Public Keys | 15 | |
| mrunmai | Modular Exponentiation | 10 | |
| AbdillahRifai | Modular Exponentiation | 10 | |
| stepden | XOR Starter | 10 | |
| ava_daria | Base64 | 10 | |
| stepden | Bytes and Big Integers | 10 |
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