| Date | User | Challenge | Score |
| fentaohe | Encoding Challenge | 40 | |
| aunizul | XOR Starter | 10 | |
| kek9834 | Base64 | 10 | |
| kek9834 | Hex | 5 | |
| kek9834 | ASCII | 5 | |
| ammilzr1 | Greatest Common Divisor | 15 | |
| ammilzr1 | You either know, XOR you don't | 30 | |
| platinumxy | Chinese Remainder Theorem | 40 | |
| kek9834 | Network Attacks | 5 | |
| wangfu | Round Keys | 20 | |
| ammilzr1 | Favourite byte | 20 | |
| spartan8806 | Megalomaniac 2 | 120 | |
| kek9834 | Great Snakes | 3 | |
| CYDF1121 | Legendre Symbol | 35 | |
| ammilzr1 | XOR Properties | 15 | |
| kek9834 | Finding Flags | 2 | |
| platinumxy | Modular Square Root | 35 | |
| spartan8806 | Megalomaniac 1 | 100 | |
| tfabjan | You either know, XOR you don't | 30 | |
| ALKMORPH | Structure of AES | 15 | |
| fentaohe | Lemur XOR | 40 | |
| Sxpck1 | Finding Flags | 2 | |
| tfabjan | Favourite byte | 20 | |
| J2M7 | Finding Flags | 2 | |
| noobboymk | Flipping Cookie | 60 | |
| Anti_ | Square Eyes | 35 | |
| Ayuwandira | Manyprime | 40 | |
| henzarafaello | RSA Decryption | 20 | |
| platinumxy | Legendre Symbol | 35 | |
| henzarafaello | Private Keys | 20 | |
| yr81 | Elliptic Nodes | 150 | |
| tfabjan | XOR Properties | 15 | |
| henzarafaello | Euler's Totient | 20 | |
| KOREANGIRL | Finding Flags | 2 | |
| Anti_ | Monoprime | 30 | |
| sjvvvv | Passwords as Keys | 50 | |
| jonnytang | ZKP Introduction | 5 | |
| vodkatypique | Finding Flags | 2 | |
| kryptonos | ASCII | 5 | |
| marcofireball84 | Vectors | 10 | |
| Anti_ | Factoring | 15 | |
| sixsquareAI | Exceptional Curves | 100 | |
| CYDF1121 | Chinese Remainder Theorem | 40 | |
| Anti_ | RSA Signatures | 25 | |
| ardie | Great Snakes | 3 | |
| kryptonos | Great Snakes | 3 | |
| ardie | Finding Flags | 2 | |
| kryptonos | Finding Flags | 2 | |
| Anti_ | RSA Decryption | 20 | |
| Anti_ | Private Keys | 20 |
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