| Date | User | Challenge | Score |
| hanrose | Working with Fields | 10 | |
| annmaz | RSA Decryption | 20 | |
| Baeco | Ron was Wrong, Whit is Right | 90 | |
| amr_hassan | Favourite byte | 20 | |
| 1502dth | Resisting Bruteforce | 10 | |
| deyanix | ECB Oracle | 60 | |
| anhduclee2006 | ASCII | 5 | |
| sfo | Network Attacks | 5 | |
| medb | Logon Zero | 80 | |
| annmaz | Private Keys | 20 | |
| MasterPeace | Bringing It All Together | 50 | |
| annmaz | Euler's Totient | 20 | |
| anhduclee2006 | Great Snakes | 3 | |
| AbuQamrah | Great Snakes | 3 | |
| annmaz | Public Keys | 15 | |
| anhduclee2006 | Finding Flags | 2 | |
| 1502dth | Keyed Permutations | 5 | |
| annmaz | Modular Exponentiation | 10 | |
| deyanix | ECB CBC WTF | 55 | |
| yashmehta | You either know, XOR you don't | 30 | |
| AbuQamrah | Finding Flags | 2 | |
| Manolis_Vyz | Point Negation | 10 | |
| viflaem2 | LWE High Bits Message | 15 | |
| yashmehta | Favourite byte | 20 | |
| deyanix | Passwords as Keys | 50 | |
| MidoS3d | Fast Primes | 75 | |
| annmaz | Null or Never | 100 | |
| deyanix | Modes of Operation Starter | 15 | |
| Manolis_Vyz | Background Reading | 5 | |
| deyanix | Bringing It All Together | 50 | |
| Piterbul | XOR Properties | 15 | |
| Ahmed_Jaddou | Transparency | 50 | |
| fluo73 | Everything is Big | 70 | |
| deyanix | Diffusion through Permutation | 30 | |
| yashmehta | XOR Properties | 15 | |
| GofAllTrades | Lemur XOR | 40 | |
| deyanix | Confusion through Substitution | 25 | |
| TeeMaker | Resisting Bruteforce | 10 | |
| deyanix | Round Keys | 20 | |
| TeeMaker | Keyed Permutations | 5 | |
| deyanix | Structure of AES | 15 | |
| clemensGooooo | ZKP Introduction | 5 | |
| Baeco | Fast Primes | 75 | |
| TeeMaker | Network Attacks | 5 | |
| TeeMaker | Great Snakes | 3 | |
| TeeMaker | Finding Flags | 2 | |
| yashmehta | XOR Starter | 10 | |
| voqkrye | Background Reading | 5 | |
| sai09naidu89 | Finding Flags | 2 | |
| yashmehta | Bytes and Big Integers | 10 |
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