| Date | User | Challenge | Score |
| CrunchyToast | Great Snakes | 3 | |
| harjottelu | Round Keys | 20 | |
| harjottelu | Structure of AES | 15 | |
| CrunchyToast | Finding Flags | 2 | |
| harjottelu | Resisting Bruteforce | 10 | |
| harjottelu | Keyed Permutations | 5 | |
| That11thHarmonic | From Private to Public Key LWE | 25 | |
| harjottelu | Modular Binomials | 80 | |
| That11thHarmonic | LWE Low Bits Message | 20 | |
| nobody112 | Great Snakes | 3 | |
| nobody112 | Finding Flags | 2 | |
| SolraTCDN | Favourite byte | 20 | |
| fluo73 | Logon Zero | 80 | |
| Despair09 | RSA Signatures | 25 | |
| Bobbybus | Great Snakes | 3 | |
| Bobbybus | Finding Flags | 2 | |
| machie | Base64 | 10 | |
| SolraTCDN | XOR Properties | 15 | |
| kckckck3679 | Favourite byte | 20 | |
| cahidenes | ProSign 3 | 100 | |
| rama2130 | Point Negation | 10 | |
| lerequin | You either know, XOR you don't | 30 | |
| cacarentin | XOR Starter | 10 | |
| ZacH123456789 | PriMeD5 | 100 | |
| nadalon | Resisting Bruteforce | 10 | |
| rama2130 | Background Reading | 5 | |
| SolraTCDN | XOR Starter | 10 | |
| vtytar | Size and Basis | 15 | |
| hiziki | Resisting Bruteforce | 10 | |
| Despair09 | RSA Decryption | 20 | |
| Nramine | Broken RSA | 100 | |
| Lunick | XOR Starter | 10 | |
| SolraTCDN | Bytes and Big Integers | 10 | |
| nadalon | Keyed Permutations | 5 | |
| JSsec | Bytes and Big Integers | 10 | |
| phuctrung | Quadratic Residues | 25 | |
| lauretti | Encoding Challenge | 40 | |
| minshay | Decrypting TLS 1.2 | 30 | |
| rain_cloud | Extended GCD | 20 | |
| That11thHarmonic | LWE High Bits Message | 15 | |
| kckckck3679 | XOR Properties | 15 | |
| gumbat70 | RSA or HMAC? Part 2 | 100 | |
| Despair09 | Private Keys | 20 | |
| kckckck3679 | Encoding Challenge | 40 | |
| Lunick | Bytes and Big Integers | 10 | |
| CWTerry | Modular Arithmetic 2 | 20 | |
| cacarentin | Bytes and Big Integers | 10 | |
| Nramine | Modular Binomials | 80 | |
| Despair09 | Euler's Totient | 20 | |
| saic | Transparency | 50 |
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