| Date | User | Challenge | Score |
| electus08 | Finding Flags | 2 | |
| Sakutachii | XOR Properties | 15 | |
| Felinehumanoid | Base64 | 10 | |
| Mohammedamiran | Oracular Spectacular | 150 | |
| Mohammedamiran | Flipping Cookie | 60 | |
| Mohammedamiran | Bean Counter | 60 | |
| Mohammedamiran | CTRIME | 70 | |
| Au_ph | You either know, XOR you don't | 30 | |
| Mohammedamiran | Symmetry | 50 | |
| Mohammedamiran | ECB Oracle | 60 | |
| Mohammedamiran | ECB CBC WTF | 55 | |
| Mohammedamiran | Passwords as Keys | 50 | |
| Mohammedamiran | Modes of Operation Starter | 15 | |
| Mohammedamiran | Bringing It All Together | 50 | |
| Mohammedamiran | Diffusion through Permutation | 30 | |
| Au_ph | Favourite byte | 20 | |
| Felinehumanoid | Hex | 5 | |
| Mohammedamiran | Confusion through Substitution | 25 | |
| Mohammedamiran | Round Keys | 20 | |
| Mohammedamiran | Structure of AES | 15 | |
| Mohammedamiran | Resisting Bruteforce | 10 | |
| Mohammedamiran | Keyed Permutations | 5 | |
| Au_ph | XOR Properties | 15 | |
| omar2003 | Keyed Permutations | 5 | |
| Au_ph | XOR Starter | 10 | |
| ddanggui | LWE Background | 5 | |
| taboctf | Oracular Spectacular | 150 | |
| Mohammedamiran | WOTS Up 2 | 90 | |
| Mohammedamiran | WOTS Up | 75 | |
| Mohammedamiran | Mixed Up | 120 | |
| Felinehumanoid | ASCII | 5 | |
| telemac0 | Encoding Challenge | 40 | |
| ddanggui | Backpack Cryptography | 120 | |
| Mohammedamiran | Twin Keys | 100 | |
| Mohammedamiran | Hash Stuffing | 50 | |
| Mohammedamiran | Collider | 50 | |
| Mohammedamiran | Jack's Birthday Confusion | 30 | |
| Mohammedamiran | Jack's Birthday Hash | 20 | |
| Felinehumanoid | Great Snakes | 3 | |
| Mohammedamiran | The Matrix Reloaded | 100 | |
| Mohammedamiran | Script Kiddie | 70 | |
| Mohammedamiran | Additive | 70 | |
| Mohammedamiran | Working with Fields | 10 | |
| Mohammedamiran | Computing Public Values | 25 | |
| Mohammedamiran | Computing Shared Secrets | 30 | |
| Mohammedamiran | Deriving Symmetric Keys | 40 | |
| Mohammedamiran | Generators of Groups | 20 | |
| qukert | Base64 | 10 | |
| Yatogami | Modular Arithmetic 2 | 20 | |
| qukert | Hex | 5 |
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