| Date | User | Challenge | Score |
| g3k1 | Jack's Birthday Hash | 20 | |
| olexenn | ASCII | 5 | |
| KinichPfpGuy | Base64 | 10 | |
| KinichPfpGuy | Hex | 5 | |
| KinichPfpGuy | ASCII | 5 | |
| g3k1 | Prime and Prejudice | 200 | |
| KinichPfpGuy | Great Snakes | 3 | |
| callmelucky07 | Chinese Remainder Theorem | 40 | |
| tortoiseseadonut | Quadratic Residues | 25 | |
| Natthawat | Base64 | 10 | |
| olexenn | Great Snakes | 3 | |
| KinichPfpGuy | Finding Flags | 2 | |
| olexenn | Finding Flags | 2 | |
| Natthawat | Hex | 5 | |
| lrivo | Hex | 5 | |
| Natthawat | ASCII | 5 | |
| tortoiseseadonut | Modular Inverting | 25 | |
| isabellavansloot | XOR Properties | 15 | |
| tortoiseseadonut | Modular Arithmetic 2 | 20 | |
| Fenil_patel | You either know, XOR you don't | 30 | |
| tortoiseseadonut | Modular Arithmetic 1 | 20 | |
| lrivo | ASCII | 5 | |
| isabellavansloot | XOR Starter | 10 | |
| quadfire | Structure of AES | 15 | |
| Fenil_patel | Favourite byte | 20 | |
| Fenil_patel | XOR Properties | 15 | |
| Fenil_patel | XOR Starter | 10 | |
| Fenil_patel | Bytes and Big Integers | 10 | |
| Natthawat | Great Snakes | 3 | |
| Fenil_patel | Base64 | 10 | |
| Fenil_patel | Hex | 5 | |
| tortoiseseadonut | Extended GCD | 20 | |
| lrivo | Network Attacks | 5 | |
| Natthawat | Finding Flags | 2 | |
| Fridintana | Lazy CBC | 60 | |
| hanifshhb | Passwords as Keys | 50 | |
| callmelucky07 | Modular Square Root | 35 | |
| hanifshhb | Modes of Operation Starter | 15 | |
| lrivo | Great Snakes | 3 | |
| Fenil_patel | ASCII | 5 | |
| lrivo | Finding Flags | 2 | |
| Fenil_patel | Great Snakes | 3 | |
| Fenil_patel | Finding Flags | 2 | |
| hanifshhb | Quadratic Residues | 25 | |
| Alaa_04 | Favourite byte | 20 | |
| shehab_sallam | Legendre Symbol | 35 | |
| Djak0 | Pad Thai | 80 | |
| halloweengoosegn | Hex | 5 | |
| shehab_sallam | Quadratic Residues | 25 | |
| halloweengoosegn | ASCII | 5 |
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