| Date | User | Challenge | Score |
| ABED_Cyber | Finding Flags | 2 | |
| Leftstam | Passwords as Keys | 50 | |
| haddockPaella | Modular Arithmetic 2 | 20 | |
| lg100000 | Extended GCD | 20 | |
| Carter_Ference | Working with Fields | 10 | |
| Carter_Ference | Modular Exponentiation | 10 | |
| mattiaferra | Bytes and Big Integers | 10 | |
| Carter_Ference | Quadratic Residues | 25 | |
| valerio | Bytes and Big Integers | 10 | |
| haddockPaella | Modular Arithmetic 1 | 20 | |
| Adem0 | Saying Hello | 20 | |
| Groucho | ASCII | 5 | |
| brainr00t | Broken RSA | 100 | |
| Adem0 | TLS Handshake | 15 | |
| haddockPaella | Extended GCD | 20 | |
| swimmingdog | Background Reading | 5 | |
| doemcyber05 | Base64 | 10 | |
| naggar023 | Modular Arithmetic 1 | 20 | |
| guilty | Extended GCD | 20 | |
| mattiaferra | Base64 | 10 | |
| Ikson | ECB CBC WTF | 55 | |
| diggio | XOR Properties | 15 | |
| drstikkio | Base64 | 10 | |
| Ikson | Passwords as Keys | 50 | |
| federico27 | Bytes and Big Integers | 10 | |
| valerio | Base64 | 10 | |
| diggio | XOR Starter | 10 | |
| osihlovec | Mister Saplin's Preview | 80 | |
| Adem0 | Sharks on the Wire | 10 | |
| halliana | Too Many Errors | 100 | |
| drstikkio | Hex | 5 | |
| guipi | Finding Flags | 2 | |
| Wayne | ASCII | 5 | |
| diggio | Encoding Challenge | 40 | |
| diggio | Bytes and Big Integers | 10 | |
| drstikkio | ASCII | 5 | |
| Groucho | Network Attacks | 5 | |
| laghettodelleur | Finding Flags | 2 | |
| federico27 | Base64 | 10 | |
| pepina | Hex | 5 | |
| Adem0 | Secure Protocols | 5 | |
| DiamondKiller | Encoding Challenge | 40 | |
| Ikson | Modes of Operation Starter | 15 | |
| pepina | ASCII | 5 | |
| silent_Cypher | Favourite byte | 20 | |
| diggio | Base64 | 10 | |
| federico27 | Hex | 5 | |
| DiamondKiller | Bytes and Big Integers | 10 | |
| federico27 | ASCII | 5 | |
| diggio | Hex | 5 |
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