| Date | User | Challenge | Score |
| ZeroK | Great Snakes | 3 | |
| Romyna | Too Many Errors | 100 | |
| WilmanMorocho | You either know, XOR you don't | 30 | |
| bachthaison1 | Hex | 5 | |
| Leela | Curveball | 100 | |
| papajek | Bytes and Big Integers | 10 | |
| hthh | Logon Zero | 80 | |
| bachthaison1 | ASCII | 5 | |
| WilmanMorocho | Favourite byte | 20 | |
| camale | Null or Never | 100 | |
| bachthaison1 | Great Snakes | 3 | |
| WilmanMorocho | XOR Properties | 15 | |
| WilmanMorocho | XOR Starter | 10 | |
| WilmanMorocho | Bytes and Big Integers | 10 | |
| WilmanMorocho | Base64 | 10 | |
| WilmanMorocho | Hex | 5 | |
| WilmanMorocho | ASCII | 5 | |
| hthh | Triple DES | 60 | |
| Romyna | Jeff's LFSR | 150 | |
| WilmanMorocho | Great Snakes | 3 | |
| WilmanMorocho | Finding Flags | 2 | |
| camale | Paper Plane | 120 | |
| IleanisOrtiz | Transparency | 50 | |
| Leela | Let's Decrypt | 80 | |
| Hexium | Favourite byte | 20 | |
| Maizar | Moving Problems | 150 | |
| Dgcg | Computing Shared Secrets | 30 | |
| Maizar | Elliptic Nodes | 150 | |
| Dgcg | Computing Public Values | 25 | |
| Hexium | XOR Properties | 15 | |
| HarveyTucker | Bytes and Big Integers | 10 | |
| cinta | XOR Starter | 10 | |
| Isma28xz | Modular Binomials | 80 | |
| Maizar | Micro Transmissions | 120 | |
| noura | ZKP Introduction | 5 | |
| HarveyTucker | Base64 | 10 | |
| Yakha | Hex | 5 | |
| noura | Background Reading | 5 | |
| diengai | Bytes and Big Integers | 10 | |
| Maizar | Exceptional Curves | 100 | |
| Yakha | ASCII | 5 | |
| cinta | Bytes and Big Integers | 10 | |
| Dgcg | Generators of Groups | 20 | |
| Yakha | Great Snakes | 3 | |
| akabeco | Base64 | 10 | |
| Yakha | Finding Flags | 2 | |
| akabeco | Hex | 5 | |
| Hexium | XOR Starter | 10 | |
| AAlessandro | Proofs of Knowledge | 20 | |
| akabeco | ASCII | 5 |
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