| Date | User | Challenge | Score |
| cof123 | ECB CBC WTF | 55 | |
| Abdallah_Cyber7 | ECB CBC WTF | 55 | |
| goopgobbler | Base64 | 10 | |
| goopgobbler | Hex | 5 | |
| Ad_Augusta | Finding Flags | 2 | |
| gulliver | ASCII | 5 | |
| gulliver | Bytes and Big Integers | 10 | |
| goopgobbler | ASCII | 5 | |
| Abstract | Base64 | 10 | |
| mrsyntaxis | ASCII | 5 | |
| goopgobbler | Great Snakes | 3 | |
| fadwa | Finding Flags | 2 | |
| malak_maythim | Passwords as Keys | 50 | |
| EcheExpert | Hex | 5 | |
| goopgobbler | Finding Flags | 2 | |
| Abdallah_Cyber7 | Passwords as Keys | 50 | |
| archex | ProSign 3 | 100 | |
| rytui | Extended GCD | 20 | |
| YKcrypto323 | Favourite byte | 20 | |
| Abstract | Hex | 5 | |
| YKcrypto323 | XOR Properties | 15 | |
| EcheExpert | ASCII | 5 | |
| cof123 | Passwords as Keys | 50 | |
| mrsyntaxis | Great Snakes | 3 | |
| rakib314167 | Greatest Common Divisor | 15 | |
| Abdallah_Cyber7 | Modes of Operation Starter | 15 | |
| b1b00www | Parameter Injection | 60 | |
| gulliver | Hex | 5 | |
| siriusraven | Adrien's Signs | 80 | |
| Beto97 | Network Attacks | 5 | |
| cof123 | Modes of Operation Starter | 15 | |
| capocattiveria | Base64 | 10 | |
| YKcrypto323 | Encoding Challenge | 40 | |
| nighty_night | Resisting Bruteforce | 10 | |
| EcheExpert | Network Attacks | 5 | |
| cof123 | Bringing It All Together | 50 | |
| Kal1re | Point Negation | 10 | |
| Abstract | ASCII | 5 | |
| mrsyntaxis | Finding Flags | 2 | |
| Abstract | Great Snakes | 3 | |
| Abstract | Finding Flags | 2 | |
| Kal1re | Background Reading | 5 | |
| kalixtro | Bytes and Big Integers | 10 | |
| Beto97 | XOR Starter | 10 | |
| cof123 | Diffusion through Permutation | 30 | |
| Elpepe | Finding Flags | 2 | |
| YKcrypto323 | Network Attacks | 5 | |
| origabai | Lo-Hi Card Game | 120 | |
| Beto97 | Bytes and Big Integers | 10 | |
| DinoGun | Modes of Operation Starter | 15 |
You are now level Current level