| Date | User | Challenge | Score |
| Mb3gems | Diffusion through Permutation | 30 | |
| Connorm25 | Bringing It All Together | 50 | |
| blackjack28 | Hex | 5 | |
| ShadowJesus | Hex | 5 | |
| Mb3gems | Confusion through Substitution | 25 | |
| blackjack28 | ASCII | 5 | |
| Hadeslia | Monoprime | 30 | |
| ReyChinchano | Base64 | 10 | |
| Mb3gems | Round Keys | 20 | |
| blackjack28 | Great Snakes | 3 | |
| Hadeslia | Factoring | 15 | |
| ShadowJesus | ASCII | 5 | |
| ReyChinchano | Hex | 5 | |
| Mb3gems | Structure of AES | 15 | |
| Hadeslia | RSA Signatures | 25 | |
| TamaldeDulce44 | Base64 | 10 | |
| ReyChinchano | ASCII | 5 | |
| Connorm25 | Diffusion through Permutation | 30 | |
| blackjack28 | Finding Flags | 2 | |
| ApparentlyDirt | Modular Square Root | 35 | |
| Mb3gems | Resisting Bruteforce | 10 | |
| Mb3gems | Keyed Permutations | 5 | |
| TamaldeDulce44 | Hex | 5 | |
| SM236963 | Modes of Operation Starter | 15 | |
| Mb3gems | You either know, XOR you don't | 30 | |
| shihab | Scalar Multiplication | 35 | |
| shihab | Point Addition | 30 | |
| Connorm25 | Confusion through Substitution | 25 | |
| shihab | Point Negation | 10 | |
| shihab | Background Reading | 5 | |
| ash61313 | Base64 | 10 | |
| shihab | Encoding Challenge | 40 | |
| shihab | Network Attacks | 5 | |
| Lucen | Monoprime | 30 | |
| Connorm25 | Round Keys | 20 | |
| ash61313 | Hex | 5 | |
| aaroceterexx | Modular Binomials | 80 | |
| ysned | ASCII | 5 | |
| fkhan67 | Symmetry | 50 | |
| fkhan67 | Flipping Cookie | 60 | |
| fkhan67 | ECB CBC WTF | 55 | |
| aaroceterexx | Adrien's Signs | 80 | |
| aaroceterexx | Chinese Remainder Theorem | 40 | |
| Connorm25 | Structure of AES | 15 | |
| aaroceterexx | Modular Square Root | 35 | |
| aaroceterexx | Legendre Symbol | 35 | |
| aaroceterexx | Quadratic Residues | 25 | |
| aaroceterexx | Modular Inverting | 25 | |
| aaroceterexx | Modular Arithmetic 2 | 20 | |
| aaroceterexx | Modular Arithmetic 1 | 20 |
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