| Date | User | Challenge | Score |
| Kovi | Base64 | 10 | |
| Kovi | Hex | 5 | |
| Kovi | ASCII | 5 | |
| Kovi | Great Snakes | 3 | |
| BillGerald | Quadratic Residues | 25 | |
| Kovi | Finding Flags | 2 | |
| toomuchcoffee | Static Client 2 | 120 | |
| Mohammedosam | Network Attacks | 5 | |
| Mohammedosam | Great Snakes | 3 | |
| Mohammedosam | Finding Flags | 2 | |
| BillGerald | Modular Inverting | 25 | |
| resowifix | Jack's Birthday Hash | 20 | |
| tacticalHyperfix | Greatest Common Divisor | 15 | |
| resowifix | Jack's Birthday Confusion | 30 | |
| HaxL0p4 | RSA Decryption | 20 | |
| resowifix | Confusion through Substitution | 25 | |
| toomuchcoffee | Additive | 70 | |
| resowifix | Round Keys | 20 | |
| toomuchcoffee | Static Client | 100 | |
| HaxL0p4 | Private Keys | 20 | |
| resowifix | Structure of AES | 15 | |
| Neilster | Marin's Secrets | 50 | |
| resowifix | Resisting Bruteforce | 10 | |
| resowifix | Keyed Permutations | 5 | |
| resowifix | Modular Binomials | 80 | |
| hungtrab | Noise Cheap | 90 | |
| Neilster | Infinite Descent | 50 | |
| million | Hex | 5 | |
| million | ASCII | 5 | |
| Noro | Base64 | 10 | |
| Noro | Hex | 5 | |
| million | Great Snakes | 3 | |
| million | Finding Flags | 2 | |
| qucker135 | Adrien's Signs | 80 | |
| wh77 | ECB Oracle | 60 | |
| tacticalHyperfix | You either know, XOR you don't | 30 | |
| resowifix | Adrien's Signs | 80 | |
| hsyn | Modular Inverting | 25 | |
| jakobl | You either know, XOR you don't | 30 | |
| cShier | Finding Flags | 2 | |
| resowifix | Chinese Remainder Theorem | 40 | |
| hsyn | Modular Arithmetic 2 | 20 | |
| MagicalCloud | Background Reading | 5 | |
| hungtrab | Missing Modulus | 80 | |
| hsyn | Modular Arithmetic 1 | 20 | |
| tacticalHyperfix | Favourite byte | 20 | |
| jakobl | Favourite byte | 20 | |
| toomuchcoffee | Export-grade | 100 | |
| mattr76 | Favourite byte | 20 | |
| tacticalHyperfix | XOR Properties | 15 |
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