| Date | User | Challenge | Score |
| crazywolfy | Symmetry | 50 | |
| kevin21 | XOR Starter | 10 | |
| quen | Hex | 5 | |
| crazywolfy | Flipping Cookie | 60 | |
| pc417 | Infinite Descent | 50 | |
| crazywolfy | ECB CBC WTF | 55 | |
| Chocezzy | Modular Arithmetic 1 | 20 | |
| Dgcg | Pad Thai | 80 | |
| magnificentrob | Hex | 5 | |
| avecmonamour | Great Snakes | 3 | |
| crazywolfy | ECB Oracle | 60 | |
| Chocezzy | Extended GCD | 20 | |
| avecmonamour | Finding Flags | 2 | |
| iwalu | Great Snakes | 3 | |
| magnificentrob | ASCII | 5 | |
| iwalu | Finding Flags | 2 | |
| rajforlearn83 | Computing Shared Secrets | 30 | |
| magnificentrob | Great Snakes | 3 | |
| magnificentrob | Finding Flags | 2 | |
| tbr103 | Diffusion through Permutation | 30 | |
| pc417 | Everything is Big | 70 | |
| crazywolfy | Passwords as Keys | 50 | |
| rajforlearn83 | Computing Public Values | 25 | |
| quen | ASCII | 5 | |
| tbr103 | Confusion through Substitution | 25 | |
| tyluudinh | Nothing Up My Sleeve | 150 | |
| tyluudinh | Missing Modulus | 80 | |
| quen | Great Snakes | 3 | |
| crazywolfy | Modes of Operation Starter | 15 | |
| tyluudinh | Jeff's LFSR | 150 | |
| tbr103 | Round Keys | 20 | |
| tyluudinh | Nativity | 60 | |
| tyluudinh | Bounded Noise | 50 | |
| crazywolfy | Bringing It All Together | 50 | |
| quen | Finding Flags | 2 | |
| HACKER_merlin | Network Attacks | 5 | |
| tyluudinh | Trust Games | 150 | |
| Ameneko | Modular Arithmetic 1 | 20 | |
| crazywolfy | Diffusion through Permutation | 30 | |
| Konstantinos | Bytes and Big Integers | 10 | |
| likely | Great Snakes | 3 | |
| Konstantinos | Base64 | 10 | |
| Ameneko | Extended GCD | 20 | |
| likely | Finding Flags | 2 | |
| Konstantinos | Hex | 5 | |
| Konstantinos | ASCII | 5 | |
| tyluudinh | Toshi's Treasure | 150 | |
| vibehutao | Confusion through Substitution | 25 | |
| PJ696769 | Quadratic Residues | 25 | |
| tyluudinh | Oh SNAP | 120 |
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