| Date | User | Challenge | Score |
| ibtihaj_jalil | XOR Starter | 10 | |
| Tyrenvex | Great Snakes | 3 | |
| natanpi | Base64 | 10 | |
| natanpi | Hex | 5 | |
| Rainyday1312 | Finding Flags | 2 | |
| itspp_7 | Base64 | 10 | |
| Kanad3 | Montgomery's Ladder | 40 | |
| natanpi | ASCII | 5 | |
| mehtasec | Public Keys | 15 | |
| Tyrenvex | Finding Flags | 2 | |
| natanpi | Great Snakes | 3 | |
| natanpi | Finding Flags | 2 | |
| mehtasec | Modular Exponentiation | 10 | |
| ibtihaj_jalil | Bytes and Big Integers | 10 | |
| MrBead | Quadratic Residues | 25 | |
| Kanad3 | Efficient Exchange | 50 | |
| ibtihaj_jalil | Base64 | 10 | |
| Ah_Crypto2 | Point Negation | 10 | |
| cryptohack137 | Modular Arithmetic 1 | 20 | |
| cryptohack137 | Extended GCD | 20 | |
| ibtihaj_jalil | Hex | 5 | |
| MasterLJ | You either know, XOR you don't | 30 | |
| ibtihaj_jalil | ASCII | 5 | |
| Zira | Resisting Bruteforce | 10 | |
| Zira | Keyed Permutations | 5 | |
| itspp_7 | Hex | 5 | |
| cryptohack137 | Greatest Common Divisor | 15 | |
| MasterLJ | Favourite byte | 20 | |
| Meen4 | Digestive | 60 | |
| cavazinf | Beatboxer | 150 | |
| r0hit | Digestive | 60 | |
| itspp_7 | ASCII | 5 | |
| MasterLJ | XOR Properties | 15 | |
| cryptohack137 | You either know, XOR you don't | 30 | |
| ibtihaj_jalil | Great Snakes | 3 | |
| cavazinf | Forbidden Fruit | 150 | |
| itspp_7 | Great Snakes | 3 | |
| itspp_7 | Finding Flags | 2 | |
| ibtihaj_jalil | Finding Flags | 2 | |
| MasterLJ | XOR Starter | 10 | |
| bbaoaanh | What's a Lattice? | 40 | |
| 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 |
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