| Date | User | Challenge | Score |
| ishan123 | RSA Signatures | 25 | |
| xXx_makarrr_xXx | XOR Properties | 15 | |
| ErnikH | Favourite byte | 20 | |
| somebodyworksy | Chinese Remainder Theorem | 40 | |
| ErnikH | XOR Properties | 15 | |
| M4DD0C74 | Background Reading | 5 | |
| Cherifa | You either know, XOR you don't | 30 | |
| somebodyworksy | Modular Square Root | 35 | |
| nongyak | Bytes and Big Integers | 10 | |
| bssndn | Finding Flags | 2 | |
| Mahdi_Kanso19928 | Great Snakes | 3 | |
| nikhilkomandur | You either know, XOR you don't | 30 | |
| nongyak | Base64 | 10 | |
| Ail2t | ASCII | 5 | |
| nongyak | Hex | 5 | |
| madhav_anand_ | Hamiltonicity 1 | 100 | |
| madhav_anand_ | Hamiltonicity (CryptoHack) | 0 | |
| Mahdi_Kanso19928 | Finding Flags | 2 | |
| mszypere | Export-grade | 100 | |
| Afaf | Parameter Injection | 60 | |
| Ail2t | Base64 | 10 | |
| somebodyworksy | Legendre Symbol | 35 | |
| nongyak | ASCII | 5 | |
| mszypere | Parameter Injection | 60 | |
| nongyak | Great Snakes | 3 | |
| aquatic_ulam | Diffusion through Permutation | 30 | |
| nongyak | Finding Flags | 2 | |
| nikhilkomandur | Favourite byte | 20 | |
| madhav_anand_ | OR Proof | 75 | |
| madhav_anand_ | OR Proof (CryptoHack) | 0 | |
| somebodyworksy | Quadratic Residues | 25 | |
| geo_gkez | Modes of Operation Starter | 15 | |
| Mateusz_Kowalski | Salty | 20 | |
| Luki | XOR Starter | 10 | |
| Mateusz_Kowalski | Manyprime | 40 | |
| Behgod | Finding Flags | 2 | |
| xem1r | Modular Arithmetic 2 | 20 | |
| geo_gkez | Network Attacks | 5 | |
| aquatic_ulam | Confusion through Substitution | 25 | |
| medb | Stream of Consciousness | 80 | |
| Ail2t | Network Attacks | 5 | |
| doquangluc | Hex | 5 | |
| n3XmAr | Finding Flags | 2 | |
| doquangluc | ASCII | 5 | |
| lid | Deriving Symmetric Keys | 40 | |
| doquangluc | Great Snakes | 3 | |
| xem1r | Modular Arithmetic 1 | 20 | |
| doquangluc | Finding Flags | 2 | |
| somebodyworksy | Modular Inverting | 25 | |
| Afaf | Deriving Symmetric Keys | 40 |
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