| Date | User | Challenge | Score |
| mfilipcz | Confusion through Substitution | 25 | |
| Q240016 | Confusion through Substitution | 25 | |
| karMashka | Bytes and Big Integers | 10 | |
| juzal | Stream of Consciousness | 80 | |
| jarinios | Deriving Symmetric Keys | 40 | |
| bonsaii | Flipping Cookie | 60 | |
| bonsaii | ECB Oracle | 60 | |
| Lampad | XOR Starter | 10 | |
| bonsaii | ECB CBC WTF | 55 | |
| bonsaii | Passwords as Keys | 50 | |
| 249ayman | RSA Decryption | 20 | |
| mfilipcz | Round Keys | 20 | |
| karoldus | PriMeD5 | 100 | |
| Aziz_ouer | You either know, XOR you don't | 30 | |
| juzal | Dancing Queen | 120 | |
| AradCoh | Montgomery Curves | 30 | |
| kamil7430 | Dancing Queen | 120 | |
| doneyit413 | Logon Zero | 80 | |
| PatrickL_SC | ProSign 3 | 100 | |
| lucknera | Crossed Wires | 100 | |
| mfilipcz | Structure of AES | 15 | |
| cmvinod | Modular Arithmetic 2 | 20 | |
| bonsaii | Modes of Operation Starter | 15 | |
| jarinios | Computing Shared Secrets | 30 | |
| Blaze1 | Bytes and Big Integers | 10 | |
| Lampad | Bytes and Big Integers | 10 | |
| Jean_MO29 | Favourite byte | 20 | |
| DRMugg | ECB Oracle | 60 | |
| bonsaii | Bringing It All Together | 50 | |
| 249ayman | Private Keys | 20 | |
| bonsaii | Diffusion through Permutation | 30 | |
| emdy | Modular Arithmetic 1 | 20 | |
| karMashka | Base64 | 10 | |
| bonsaii | Confusion through Substitution | 25 | |
| bonsaii | Round Keys | 20 | |
| mfilipcz | Passwords as Keys | 50 | |
| Lampad | Base64 | 10 | |
| bonsaii | Structure of AES | 15 | |
| karMashka | Hex | 5 | |
| Screeeal | Logon Zero | 80 | |
| Lampad | Hex | 5 | |
| karMashka | ASCII | 5 | |
| Lampad | ASCII | 5 | |
| the_real_sam | Network Attacks | 5 | |
| juzal | Logon Zero | 80 | |
| kamil7430 | Logon Zero | 80 | |
| Lampad | Great Snakes | 3 | |
| karoldus | Hash Stuffing | 50 | |
| AmrMoAdel | Secure Protocols | 5 | |
| Afaf | Pad Thai | 80 |
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