| Date | User | Challenge | Score |
| galoisfield | Parameter Injection | 60 | |
| 169975 | Base64 | 10 | |
| papou | Modular Square Root | 35 | |
| migi_86 | Hex | 5 | |
| MaxAzar | Computing Public Values | 25 | |
| migi_86 | ASCII | 5 | |
| MaxAzar | Generators of Groups | 20 | |
| Abdallah_Raed | CERTainly not | 30 | |
| MaxAzar | Working with Fields | 10 | |
| migi_86 | Great Snakes | 3 | |
| Ussser | Bytes and Big Integers | 10 | |
| GingerCarrot | Oracular Spectacular | 150 | |
| migi_86 | Finding Flags | 2 | |
| Ussser | Base64 | 10 | |
| KA183R | Greatest Common Divisor | 15 | |
| 169975 | Hex | 5 | |
| cbr4l0k | Efficient Exchange | 50 | |
| Ussser | Hex | 5 | |
| 169975 | ASCII | 5 | |
| Ussser | ASCII | 5 | |
| bluflag | Base64 | 10 | |
| littleseal26 | Greatest Common Divisor | 15 | |
| Tdawge | Chinese Remainder Theorem | 40 | |
| CyberPhoom | Point Negation | 10 | |
| Abdallah_Raed | Privacy-Enhanced Mail? | 25 | |
| Ussser | Great Snakes | 3 | |
| ali_dagistan | XOR Properties | 15 | |
| Ussser | Finding Flags | 2 | |
| s0undcl0udk1ng | Network Attacks | 5 | |
| Supper | You either know, XOR you don't | 30 | |
| SightVision | Network Attacks | 5 | |
| galoisfield | Deriving Symmetric Keys | 40 | |
| hwangg | Greatest Common Divisor | 15 | |
| Supper | Favourite byte | 20 | |
| eugenekun | Base64 | 10 | |
| s0undcl0udk1ng | Greatest Common Divisor | 15 | |
| ali_dagistan | XOR Starter | 10 | |
| eugenekun | Hex | 5 | |
| CyberPhoom | Background Reading | 5 | |
| Supper | XOR Properties | 15 | |
| Supper | XOR Starter | 10 | |
| galoisfield | Computing Shared Secrets | 30 | |
| hwangg | You either know, XOR you don't | 30 | |
| Supper | Bytes and Big Integers | 10 | |
| galoisfield | Computing Public Values | 25 | |
| galoisfield | Working with Fields | 10 | |
| s0undcl0udk1ng | You either know, XOR you don't | 30 | |
| hwangg | Favourite byte | 20 | |
| Abdallah_Raed | Modular Inverting | 25 | |
| Abdallah_Raed | Modular Arithmetic 2 | 20 |
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