| Date | User | Challenge | Score |
| mrx_2323 | Hex | 5 | |
| yonfes | Base64 | 10 | |
| yonfes | Hex | 5 | |
| yonfes | ASCII | 5 | |
| M0xX | Authenticated Handshake | 40 | |
| yonfes | Great Snakes | 3 | |
| dman | Confusion through Substitution | 25 | |
| yonfes | Finding Flags | 2 | |
| AmineIEF | Encoding Challenge | 40 | |
| jscornelius | Bytes and Big Integers | 10 | |
| WarthogTK | Hex | 5 | |
| sveta_shumovai | PriMeD5 | 100 | |
| jscornelius | Base64 | 10 | |
| WarthogTK | ASCII | 5 | |
| jscornelius | Hex | 5 | |
| mrx_2323 | ASCII | 5 | |
| jscornelius | ASCII | 5 | |
| WarthogTK | Network Attacks | 5 | |
| tanis3050 | Favourite byte | 20 | |
| jscornelius | Great Snakes | 3 | |
| WarthogTK | Great Snakes | 3 | |
| jscornelius | Finding Flags | 2 | |
| WarthogTK | Finding Flags | 2 | |
| krbnate | Finding Flags | 2 | |
| G2CYS | Great Snakes | 3 | |
| User0069 | Mister Saplin's Preview | 80 | |
| sveta_shumovai | Hash Stuffing | 50 | |
| M0xX | Decrypting TLS 1.3 | 35 | |
| M0xX | Decrypting TLS 1.2 | 30 | |
| b1b00www | Micro Transmissions | 120 | |
| G2CYS | Finding Flags | 2 | |
| madnox | Favourite byte | 20 | |
| exoq | Jack's Birthday Confusion | 30 | |
| SuPeRPi9 | Confusion through Substitution | 25 | |
| SuPeRPi9 | Round Keys | 20 | |
| Hashem | Finding Flags | 2 | |
| shishuli777 | Modular Arithmetic 2 | 20 | |
| Fisabilillah | Substitution Cipher III (DownUnderCTF) | 0 | |
| hata | ECB Oracle | 60 | |
| M0xX | Saying Hello | 20 | |
| SaqvoiasH | XOR Starter | 10 | |
| r0hit | Static Client 2 | 120 | |
| SaqvoiasH | Bytes and Big Integers | 10 | |
| SaqvoiasH | Base64 | 10 | |
| SaqvoiasH | Hex | 5 | |
| SaqvoiasH | ASCII | 5 | |
| kacpersowka | RSA Signatures | 25 | |
| SuPeRPi9 | Structure of AES | 15 | |
| SaqvoiasH | Great Snakes | 3 | |
| Wang_Jianghu | Quadratic Residues | 25 |
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