| Date | User | Challenge | Score |
| athinasiakantari | Generators of Groups | 20 | |
| pawlik | ECB Oracle | 60 | |
| CamilleFerros | Factoring | 15 | |
| negi | Bringing It All Together | 50 | |
| athinasiakantari | LWE Intro | 10 | |
| C0n0r92 | Parameter Injection | 60 | |
| pawlik | ECB CBC WTF | 55 | |
| hwan | ECB CBC WTF | 55 | |
| hwan | Triple DES | 60 | |
| skye_tan | Vote for Pedro | 150 | |
| tenagazaru | XOR Starter | 10 | |
| athinasiakantari | LWE Background | 5 | |
| pawlik | Bringing It All Together | 50 | |
| pawlik | Diffusion through Permutation | 30 | |
| tuba7__ | Finding Flags | 2 | |
| C0n0r92 | Deriving Symmetric Keys | 40 | |
| Baeco | Curves and Logs | 40 | |
| Hansi | You either know, XOR you don't | 30 | |
| hwan | ECB Oracle | 60 | |
| redishcar | ASCII | 5 | |
| tenagazaru | Bytes and Big Integers | 10 | |
| C0n0r92 | Computing Shared Secrets | 30 | |
| pawlik | Confusion through Substitution | 25 | |
| TheGreatHack | Greatest Common Divisor | 15 | |
| ivyhco | Finding Flags | 2 | |
| C0n0r92 | Computing Public Values | 25 | |
| C0n0r92 | Generators of Groups | 20 | |
| Baeco | Scalar Multiplication | 35 | |
| Hansi | Favourite byte | 20 | |
| TheGreatHack | You either know, XOR you don't | 30 | |
| ziad_nitro | Base64 | 10 | |
| 100050 | Background Reading | 5 | |
| negi | Adrien's Signs | 80 | |
| Ekroop | Secure Protocols | 5 | |
| Aurn0b | Monoprime | 30 | |
| YousSphinx | Jack's Birthday Confusion | 30 | |
| redishcar | Great Snakes | 3 | |
| ziad_nitro | Hex | 5 | |
| Mard | Meet me in the Claw | 120 | |
| ziad_nitro | ASCII | 5 | |
| Baeco | Point Addition | 30 | |
| cbr4l0k | Adrien's Signs | 80 | |
| Aurn0b | Factoring | 15 | |
| js | Chinese Remainder Theorem | 40 | |
| theoelnino | Curves and Logs | 40 | |
| hautot211 | ZKP Introduction | 5 | |
| ziad_nitro | Network Attacks | 5 | |
| redishcar | Finding Flags | 2 | |
| YaroSheyh | Legendre Symbol | 35 | |
| tenagazaru | Base64 | 10 |
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