| Date | User | Challenge | Score |
| tlarnicol | ASCII | 5 | |
| vyv1618 | ASCII | 5 | |
| jgi | ASCII | 5 | |
| vyv1618 | Great Snakes | 3 | |
| zprince | Resisting Bruteforce | 10 | |
| ask_your_mom | Hex | 5 | |
| vyv1618 | Finding Flags | 2 | |
| YWzhong | Background Reading | 5 | |
| zprince | Keyed Permutations | 5 | |
| jgi | Great Snakes | 3 | |
| ask_your_mom | ASCII | 5 | |
| zprince | Modular Inverting | 25 | |
| registers_ninja | ASCII | 5 | |
| MrCobblepot | Monoprime | 30 | |
| jskeob | Passwords as Keys | 50 | |
| ask_your_mom | Great Snakes | 3 | |
| ask_your_mom | Finding Flags | 2 | |
| registers_ninja | Great Snakes | 3 | |
| gulliver | Scalar Multiplication | 35 | |
| ShivamJangra | Hex | 5 | |
| lucy54 | Digestive | 60 | |
| registers_ninja | Finding Flags | 2 | |
| TxLast | Manyprime | 40 | |
| z4ibi | RSA Decryption | 20 | |
| train | Modular Inverting | 25 | |
| elsie | Finding Flags | 2 | |
| z4ibi | Private Keys | 20 | |
| train | Modular Arithmetic 2 | 20 | |
| Big_Chan_Chan | Finding Flags | 2 | |
| jskeob | Modes of Operation Starter | 15 | |
| siriusraven | Modular Square Root | 35 | |
| zprince | Modular Arithmetic 2 | 20 | |
| z4ibi | Euler's Totient | 20 | |
| Nemo2002 | Resisting Bruteforce | 10 | |
| ShivamJangra | ASCII | 5 | |
| witherrose | Modular Inverting | 25 | |
| z4ibi | Public Keys | 15 | |
| zprince | Modular Arithmetic 1 | 20 | |
| patientlegend | Public Keys | 15 | |
| train | Modular Arithmetic 1 | 20 | |
| ShivamJangra | Great Snakes | 3 | |
| patientlegend | Modular Exponentiation | 10 | |
| bobiealice | Logon Zero | 80 | |
| malak_maythim | Modes of Operation Starter | 15 | |
| z4ibi | Modular Exponentiation | 10 | |
| zprince | Extended GCD | 20 | |
| toribotz | Great Snakes | 3 | |
| moritzraho | Structure of AES | 15 | |
| ShivamJangra | Finding Flags | 2 | |
| witherrose | Modular Arithmetic 2 | 20 |
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