| Date | User | Challenge | Score |
| akshatdagoat | Private Keys | 20 | |
| afrdian | Flipping Cookie | 60 | |
| nihhajawarembang | Generators of Groups | 20 | |
| akshatdagoat | Euler's Totient | 20 | |
| akshatdagoat | Public Keys | 15 | |
| Hey_Andi | Network Attacks | 5 | |
| akshatdagoat | Modular Exponentiation | 10 | |
| VuiVe | Jack's Birthday Confusion | 30 | |
| abdelrahmanali | You either know, XOR you don't | 30 | |
| abdelrahmanali | Favourite byte | 20 | |
| PatrickL_SC | Vectors | 10 | |
| abdelrahmanali | XOR Properties | 15 | |
| yuxuan | Great Snakes | 3 | |
| oxide1_6 | Finding Flags | 2 | |
| LumpyChump | Bespoke Padding | 100 | |
| see0 | Quadratic Residues | 25 | |
| Hey_Andi | Great Snakes | 3 | |
| abdelrahmanali | XOR Starter | 10 | |
| abdelrahmanali | Bytes and Big Integers | 10 | |
| VuiVe | Jack's Birthday Hash | 20 | |
| abdelrahmanali | Base64 | 10 | |
| Abd_ali | Great Snakes | 3 | |
| B0nkhers | Great Snakes | 3 | |
| afrdian | ECB Oracle | 60 | |
| abdelrahmanali | Hex | 5 | |
| Abd_ali | Finding Flags | 2 | |
| see0 | Modular Inverting | 25 | |
| kilpom | RSA Decryption | 20 | |
| see0 | Modular Arithmetic 2 | 20 | |
| kilpom | Private Keys | 20 | |
| see0 | Modular Arithmetic 1 | 20 | |
| abdelrahmanali | ASCII | 5 | |
| YGUY | Jack's Birthday Confusion | 30 | |
| see0 | Extended GCD | 20 | |
| abdelrahmanali | Great Snakes | 3 | |
| B0nkhers | Finding Flags | 2 | |
| UnrealMonkey | Lemur XOR | 40 | |
| abdelrahmanali | Finding Flags | 2 | |
| 4thCORSman | Extended GCD | 20 | |
| Gabriel4804 | Hex | 5 | |
| afrdian | ECB CBC WTF | 55 | |
| Gabriel4804 | ASCII | 5 | |
| ttori | Finding Flags | 2 | |
| m4n059 | Round Keys | 20 | |
| ctm31 | Triple DES | 60 | |
| fr1x3r | Network Attacks | 5 | |
| maximafreiman | Hex | 5 | |
| ctm31 | RSA or HMAC? | 35 | |
| Gabriel4804 | Great Snakes | 3 | |
| ctm31 | JWT Secrets | 25 |
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