| Date | User | Challenge | Score |
| plushie | Favourite byte | 20 | |
| mahu | Resisting Bruteforce | 10 | |
| amr_hassan | Inferius Prime | 30 | |
| Akylbek | ECB Oracle | 60 | |
| tmslaurent | XOR Starter | 10 | |
| plushie | XOR Properties | 15 | |
| eubdq | Bytes and Big Integers | 10 | |
| Akylbek | ECB CBC WTF | 55 | |
| Akylbek | Passwords as Keys | 50 | |
| tmslaurent | Bytes and Big Integers | 10 | |
| eubdq | Base64 | 10 | |
| Akylbek | Modes of Operation Starter | 15 | |
| dioguebas | XOR Properties | 15 | |
| mahu | Keyed Permutations | 5 | |
| plushie | XOR Starter | 10 | |
| eubdq | Hex | 5 | |
| volkandr | Finding Flags | 2 | |
| eubdq | ASCII | 5 | |
| giovaniseb | Jack's Birthday Confusion | 30 | |
| giovaniseb | Jack's Birthday Hash | 20 | |
| Amat2s | Hex | 5 | |
| tmslaurent | Base64 | 10 | |
| Amat2s | ASCII | 5 | |
| PAWOS | CTRIME | 70 | |
| Amat2s | Great Snakes | 3 | |
| Amat2s | Finding Flags | 2 | |
| tmslaurent | Hex | 5 | |
| tmslaurent | ASCII | 5 | |
| plushie | Bytes and Big Integers | 10 | |
| tmslaurent | Great Snakes | 3 | |
| tmslaurent | Finding Flags | 2 | |
| plushie | Base64 | 10 | |
| bsvac | Unencryptable | 125 | |
| radare | Lazy CBC | 60 | |
| Beethoven3 | Curves and Logs | 40 | |
| Beethoven3 | Scalar Multiplication | 35 | |
| plushie | Hex | 5 | |
| shadow99 | Finding Flags | 2 | |
| plushie | ASCII | 5 | |
| plushie | Great Snakes | 3 | |
| plushie | Finding Flags | 2 | |
| Beethoven3 | Point Addition | 30 | |
| dioguebas | XOR Starter | 10 | |
| Grooninium | Base64 | 10 | |
| Grooninium | Hex | 5 | |
| code_aisac | Finding Flags | 2 | |
| purple_rabbit | Base64 | 10 | |
| dioguebas | Bytes and Big Integers | 10 | |
| Beethoven3 | Point Negation | 10 | |
| purple_rabbit | Hex | 5 |
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