| Date | User | Challenge | Score |
| kkaroly | Dancing Queen | 120 | |
| T0X1cG | XOR Properties | 15 | |
| dylanmooneymusic | Network Attacks | 5 | |
| jf_x_dev | Greatest Common Divisor | 15 | |
| holsviktor | No Way JOSE | 20 | |
| benzabonanza | Bytes and Big Integers | 10 | |
| francesco12311 | Public Keys | 15 | |
| jf_x_dev | You either know, XOR you don't | 30 | |
| benzabonanza | Base64 | 10 | |
| benzabonanza | Hex | 5 | |
| francesco12311 | Modular Exponentiation | 10 | |
| benzabonanza | ASCII | 5 | |
| jf_x_dev | Favourite byte | 20 | |
| python_error404 | Modular Inverting | 25 | |
| dylanmooneymusic | Modular Arithmetic 2 | 20 | |
| holsviktor | JWT Sessions | 10 | |
| jf_x_dev | XOR Properties | 15 | |
| okokokk | Finding Flags | 2 | |
| benzabonanza | Great Snakes | 3 | |
| holsviktor | Token Appreciation | 5 | |
| holsviktor | Transparency | 50 | |
| Sherpearce | Modular Inverting | 25 | |
| T0X1cG | XOR Starter | 10 | |
| fucla | Diffusion through Permutation | 30 | |
| Blixow | Too Honest | 50 | |
| holsviktor | SSH Keys | 35 | |
| T0X1cG | Bytes and Big Integers | 10 | |
| python_error404 | Modular Arithmetic 2 | 20 | |
| Foreverme | Modular Arithmetic 2 | 20 | |
| jf_x_dev | XOR Starter | 10 | |
| Foreverme | Modular Arithmetic 1 | 20 | |
| aminkedri | Broken RSA | 100 | |
| Foreverme | Extended GCD | 20 | |
| holsviktor | CERTainly not | 30 | |
| Foreverme | Greatest Common Divisor | 15 | |
| abdullahshamhan | Great Snakes | 3 | |
| holsviktor | Privacy-Enhanced Mail? | 25 | |
| titlemustcry | You either know, XOR you don't | 30 | |
| Blixow | Non-Interactive | 35 | |
| perryplaty | Network Attacks | 5 | |
| nathaniel2407 | XOR Starter | 10 | |
| titlemustcry | Favourite byte | 20 | |
| Blixow | Honest Verifier Zero Knowledge | 30 | |
| nathaniel2407 | Bytes and Big Integers | 10 | |
| aminkedri | Lemur XOR | 40 | |
| cryptoRiO | Moving Problems | 150 | |
| langzamoleg | XOR Starter | 10 | |
| aminkedri | Network Attacks | 5 | |
| kimDokja | Great Snakes | 3 | |
| kimDokja | Finding Flags | 2 |
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