| Date | User | Challenge | Score |
| bbaoaanh | Gram Schmidt | 30 | |
| Ah_Crypto2 | Background Reading | 5 | |
| ventie | XOR Starter | 10 | |
| cybchuu | Finding Flags | 2 | |
| Adrinn | Structure of AES | 15 | |
| bbaoaanh | Size and Basis | 15 | |
| tunas10chava | Base64 | 10 | |
| bbaoaanh | Vectors | 10 | |
| tunas10chava | ASCII | 5 | |
| tunas10chava | Hex | 5 | |
| sntt | Diffusion through Permutation | 30 | |
| PPotat0 | Base64 | 10 | |
| PPotat0 | Hex | 5 | |
| xsyshuai | ASCII | 5 | |
| xsyshuai | Great Snakes | 3 | |
| xsyshuai | Finding Flags | 2 | |
| PPotat0 | ASCII | 5 | |
| PPotat0 | Great Snakes | 3 | |
| PPotat0 | Finding Flags | 2 | |
| Adrinn | Resisting Bruteforce | 10 | |
| aj1002 | Adrien's Signs | 80 | |
| darkred414 | Finding Flags | 2 | |
| trunks | Encoding Challenge | 40 | |
| Kingfisher | Finding Flags | 2 | |
| KittyxPlants | Great Snakes | 3 | |
| KittyxPlants | Finding Flags | 2 | |
| fiveoceans | Great Snakes | 3 | |
| saimatong | Greatest Common Divisor | 15 | |
| ox1bx | Hamiltonicity 1 | 100 | |
| fiveoceans | Finding Flags | 2 | |
| TheKeyToMyHeart | Legendre Symbol | 35 | |
| Artem67 | Hex | 5 | |
| jeevous | Resisting Bruteforce | 10 | |
| Artem67 | ASCII | 5 | |
| xime | Great Snakes | 3 | |
| Artem67 | Great Snakes | 3 | |
| Artem67 | Finding Flags | 2 | |
| Loxitto | Base64 | 10 | |
| Loxitto | Hex | 5 | |
| Loxitto | ASCII | 5 | |
| trunks | You either know, XOR you don't | 30 | |
| blacksnake | Base64 | 10 | |
| blacksnake | Hex | 5 | |
| Saywi | Great Snakes | 3 | |
| ox1bx | Let's Prove It | 120 | |
| moonheesung | Ron was Wrong, Whit is Right | 90 | |
| blacksnake | ASCII | 5 | |
| saimatong | You either know, XOR you don't | 30 | |
| Saywi | Finding Flags | 2 | |
| trunks | Favourite byte | 20 |
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