| Date | User | Challenge | Score |
| mateAplicada | Structure of AES | 15 | |
| block_plant | XOR Starter | 10 | |
| broly1010 | Great Snakes | 3 | |
| ShaharHam | Bytes and Big Integers | 10 | |
| broly1010 | Finding Flags | 2 | |
| mateAplicada | Resisting Bruteforce | 10 | |
| Arwa_45 | Hex | 5 | |
| Arwa_45 | ASCII | 5 | |
| YulianiaShabala | Passwords as Keys | 50 | |
| gmenichetti | Bringing It All Together | 50 | |
| mateAplicada | Keyed Permutations | 5 | |
| mmkssvak | You either know, XOR you don't | 30 | |
| Arwa_45 | Great Snakes | 3 | |
| block_plant | Bytes and Big Integers | 10 | |
| mmkssvak | Favourite byte | 20 | |
| gmenichetti | Confusion through Substitution | 25 | |
| block_plant | Base64 | 10 | |
| mmkssvak | XOR Properties | 15 | |
| block_plant | Hex | 5 | |
| mmkssvak | XOR Starter | 10 | |
| YulianiaShabala | Modes of Operation Starter | 15 | |
| JC061215 | Hex | 5 | |
| block_plant | ASCII | 5 | |
| loserlesbian64 | XOR Properties | 15 | |
| mmkssvak | Bytes and Big Integers | 10 | |
| block_plant | Great Snakes | 3 | |
| block_plant | Finding Flags | 2 | |
| Qoroxuem | XOR Starter | 10 | |
| mmkssvak | Base64 | 10 | |
| aethernoid | Favourite byte | 20 | |
| mmkssvak | Hex | 5 | |
| YulianiaShabala | Bringing It All Together | 50 | |
| mmkssvak | ASCII | 5 | |
| Qoroxuem | Bytes and Big Integers | 10 | |
| NsrH | Factoring | 15 | |
| YulianiaShabala | Diffusion through Permutation | 30 | |
| ShaharHam | Base64 | 10 | |
| bnroys | Legendre Symbol | 35 | |
| YulianiaShabala | Confusion through Substitution | 25 | |
| aethernoid | XOR Properties | 15 | |
| alsgn1_ | Moving Problems | 150 | |
| alsgn1_ | Micro Transmissions | 120 | |
| alsgn1_ | A Twisted Mind | 80 | |
| alsgn1_ | An Evil Twisted Mind | 175 | |
| YulianiaShabala | Round Keys | 20 | |
| YulianiaShabala | Structure of AES | 15 | |
| NsrH | RSA Signatures | 25 | |
| kn1ght073 | Bytes and Big Integers | 10 | |
| Qoroxuem | Base64 | 10 | |
| alsgn1_ | An Exceptional Twisted Mind | 125 |
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