| Date | User | Challenge | Score |
| Juan_ee | XOR Properties | 15 | |
| CyberAmaan | Base64 | 10 | |
| luffy84 | Modes of Operation Starter | 15 | |
| Juan_ee | XOR Starter | 10 | |
| BAJA | Base64 | 10 | |
| BAJA | Hex | 5 | |
| thecuan01xyz | ASCII | 5 | |
| BAJA | ASCII | 5 | |
| NOXSUB | Base64 | 10 | |
| BAJA | Great Snakes | 3 | |
| CyberAmaan | Hex | 5 | |
| BAJA | Finding Flags | 2 | |
| Minhhau | Modular Arithmetic 1 | 20 | |
| thecuan01xyz | Great Snakes | 3 | |
| dynhlucw | XOR Properties | 15 | |
| Konstantinos_Ch | Secure Protocols | 5 | |
| Aryaethn | Unencryptable | 125 | |
| dynhlucw | XOR Starter | 10 | |
| Juan_ee | Bytes and Big Integers | 10 | |
| new_jakerhee123 | Checkpoint | 150 | |
| Konstantinos_Ch | XOR Properties | 15 | |
| dynhlucw | Bytes and Big Integers | 10 | |
| nghianguyen1703 | Favourite byte | 20 | |
| Konstantinos_Ch | Favourite byte | 20 | |
| Do51k | Modular Exponentiation | 10 | |
| shianchin | Favourite byte | 20 | |
| Minhhau | Extended GCD | 20 | |
| Aryaethn | Roll your Own | 125 | |
| shianchin | XOR Properties | 15 | |
| KyuEL | Hex | 5 | |
| shianchin | XOR Starter | 10 | |
| KyuEL | ASCII | 5 | |
| shianchin | Bytes and Big Integers | 10 | |
| KyuEL | Great Snakes | 3 | |
| KyuEL | Finding Flags | 2 | |
| Konstantinos_Ch | Jack's Birthday Confusion | 30 | |
| n0ha | Real Curve Crypto | 200 | |
| shrexington | Quadratic Residues | 25 | |
| Minhhau | Greatest Common Divisor | 15 | |
| Do51k | Quadratic Residues | 25 | |
| starwalkinglty | CERTainly not | 30 | |
| wywyt213 | Bounded Noise | 50 | |
| peporoot | XOR Starter | 10 | |
| starwalkinglty | Privacy-Enhanced Mail? | 25 | |
| n0ha | Checkpoint | 150 | |
| shrexington | Modular Inverting | 25 | |
| Veen0o21 | Passwords as Keys | 50 | |
| Neha_CUJ | Jack's Birthday Hash | 20 | |
| starwalkinglty | Modular Inverting | 25 | |
| gkaanls | From Private to Public Key LWE | 25 |
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