| Date | User | Challenge | Score |
| 3nz0 | You either know, XOR you don't | 30 | |
| AnonyShopper | Finding Flags | 2 | |
| Stevko | XOR Properties | 15 | |
| canfshmicrowave | RSA Decryption | 20 | |
| hoang1653 | Signing Server | 60 | |
| YassineAmraoui | Network Attacks | 5 | |
| Oliveee | Finding Flags | 2 | |
| MrMazury | Base64 | 10 | |
| canfshmicrowave | Private Keys | 20 | |
| Omar_crypto | ASCII | 5 | |
| crowcell | Bean Counter | 60 | |
| augustourqui | ASCII | 5 | |
| augustourqui | Great Snakes | 3 | |
| MrMazury | Hex | 5 | |
| cupid | Network Attacks | 5 | |
| petr | Chinese Remainder Theorem | 40 | |
| augustourqui | Finding Flags | 2 | |
| KernelMatrix | Chinese Remainder Theorem | 40 | |
| YassineAmraoui | Great Snakes | 3 | |
| dman | Flipping Cookie | 60 | |
| YassineAmraoui | Finding Flags | 2 | |
| 3nz0 | Favourite byte | 20 | |
| YakArt | Finding Flags | 2 | |
| jscornelius | Adrien's Signs | 80 | |
| muallim | ASCII | 5 | |
| Omar_crypto | Great Snakes | 3 | |
| mauwyh | Resisting Bruteforce | 10 | |
| milorico | Bytes and Big Integers | 10 | |
| muallim | Great Snakes | 3 | |
| muallim | Finding Flags | 2 | |
| Omar_crypto | Finding Flags | 2 | |
| canfshmicrowave | Euler's Totient | 20 | |
| toto001 | Passwords as Keys | 50 | |
| tanis3050 | Modular Inverting | 25 | |
| Cerades | CSIDH Key Exchange | 90 | |
| tanis3050 | Modular Arithmetic 2 | 20 | |
| canfshmicrowave | Public Keys | 15 | |
| khanhdaoduy2k7 | Greatest Common Divisor | 15 | |
| canfshmicrowave | Modular Exponentiation | 10 | |
| tranchsanto | Noise Cheap | 90 | |
| khanhdaoduy2k7 | You either know, XOR you don't | 30 | |
| APshooter | Finding Flags | 2 | |
| hinemosu1415 | RSA Decryption | 20 | |
| khanhdaoduy2k7 | Favourite byte | 20 | |
| milorico | Base64 | 10 | |
| bibeli | You either know, XOR you don't | 30 | |
| khanhdaoduy2k7 | XOR Properties | 15 | |
| hinemosu1415 | Private Keys | 20 | |
| hinemosu1415 | Euler's Totient | 20 | |
| hinemosu1415 | Public Keys | 15 |
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