| Date | User | Challenge | Score |
| maquuu1809 | Hex | 5 | |
| Adorien | Finding Flags | 2 | |
| HackerX | Hex | 5 | |
| Antonpo8 | Bytes and Big Integers | 10 | |
| pallas | Base64 | 10 | |
| HackerX | ASCII | 5 | |
| gbveen | ECB Oracle | 60 | |
| pallas | Hex | 5 | |
| Antonpo8 | Base64 | 10 | |
| mzz | Triple DES | 60 | |
| TyLion | Logon Zero | 80 | |
| pallas | ASCII | 5 | |
| maquuu1809 | ASCII | 5 | |
| Philosoraptor0 | XOR Properties | 15 | |
| LoreK_ | Successive Powers | 60 | |
| pallas | Great Snakes | 3 | |
| HackerX | Great Snakes | 3 | |
| pallas | Finding Flags | 2 | |
| hellfrost | Background Reading | 5 | |
| Antonpo8 | Hex | 5 | |
| ELKUCCA | Common Ground | 75 | |
| Antonpo8 | ASCII | 5 | |
| Vladislavhackerb | ASCII | 5 | |
| crux | Quadratic Residues | 25 | |
| roogs22 | Triple DES | 60 | |
| Antonpo8 | Great Snakes | 3 | |
| Vladislavhackerb | Great Snakes | 3 | |
| gopi373635 | Base64 | 10 | |
| Vladislavhackerb | Finding Flags | 2 | |
| HackerX | Finding Flags | 2 | |
| maanXploit | Hex | 5 | |
| PeterKosiara | You either know, XOR you don't | 30 | |
| jskeob | Forbidden Fruit | 150 | |
| N7B_518 | Let's Decrypt Again | 175 | |
| Slavonishe | Resisting Bruteforce | 10 | |
| maanXploit | ASCII | 5 | |
| N7B_518 | Vote for Pedro | 150 | |
| N7B_518 | Blinding Light | 120 | |
| N7B_518 | Let's Decrypt | 80 | |
| Konung_of_Larp | Passwords as Keys | 50 | |
| maanXploit | Great Snakes | 3 | |
| Slavonishe | Keyed Permutations | 5 | |
| maanXploit | Finding Flags | 2 | |
| Slavonishe | Modular Binomials | 80 | |
| gopi373635 | Hex | 5 | |
| gbveen | ECB CBC WTF | 55 | |
| oviedoj408 | Structure of AES | 15 | |
| N7B_518 | Signing Server | 60 | |
| SKYCODEOFF | Bytes and Big Integers | 10 | |
| ELKUCCA | Successive Powers | 60 |
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