| Date | User | Challenge | Score |
| oiu890 | ECB Oracle | 60 | |
| DinhFU | Hex | 5 | |
| anonymous54321 | Finding Flags | 2 | |
| ShadetheAvali | Efficient Exchange | 50 | |
| somebel530 | Modular Arithmetic 1 | 20 | |
| Luci | Modular Inverting | 25 | |
| amdi | Base64 | 10 | |
| amdi | Hex | 5 | |
| Luci | Modular Arithmetic 2 | 20 | |
| amdi | ASCII | 5 | |
| Lucen | You either know, XOR you don't | 30 | |
| omar_tkito | XOR Properties | 15 | |
| gellyfisher | Oh SNAP | 120 | |
| BonziSki | Round Keys | 20 | |
| amdi | Great Snakes | 3 | |
| amdi | Finding Flags | 2 | |
| elizabeth00012 | Hex | 5 | |
| Luci | Modular Arithmetic 1 | 20 | |
| DinhFU | ASCII | 5 | |
| Tpanga361 | Bytes and Big Integers | 10 | |
| chec | You either know, XOR you don't | 30 | |
| somebel530 | Extended GCD | 20 | |
| Fr0st1ord | XOR Starter | 10 | |
| xfnx | No Random, No Bias | 120 | |
| elizabeth00012 | ASCII | 5 | |
| CCcat | Broken RSA | 100 | |
| chec | Encoding Challenge | 40 | |
| tigerBoss101 | Passwords as Keys | 50 | |
| erendoes | Great Snakes | 3 | |
| Anonymus79007677 | Finding Flags | 2 | |
| gamer_498571 | ASCII | 5 | |
| ikriqd | XOR Starter | 10 | |
| neo001 | XOR Starter | 10 | |
| 00xCanelo | Modulus Inutilis | 50 | |
| neo001 | Bytes and Big Integers | 10 | |
| omar_tkito | XOR Starter | 10 | |
| 00xCanelo | Salty | 20 | |
| Lucen | Favourite byte | 20 | |
| AyoubIDSI | Base64 | 10 | |
| gamer_498571 | Great Snakes | 3 | |
| starbinhas | Legendre Symbol | 35 | |
| gamer_498571 | Finding Flags | 2 | |
| cyberri | Non-Interactive | 35 | |
| poxin88547 | Greatest Common Divisor | 15 | |
| yendi77 | Round Keys | 20 | |
| ikriqd | Bytes and Big Integers | 10 | |
| yendi77 | Structure of AES | 15 | |
| omar_tkito | Bytes and Big Integers | 10 | |
| yendi77 | Resisting Bruteforce | 10 | |
| Lucen | XOR Properties | 15 |
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