| Date | User | Challenge | Score |
| Klaudia | Modular Binomials | 80 | |
| gim | Structure of AES | 15 | |
| Anna_skarlatou | Public Keys | 15 | |
| athinasiakantari | XOR Starter | 10 | |
| washer2635 | Marin's Secrets | 50 | |
| 100050 | Manyprime | 40 | |
| tmkyd | Factoring | 15 | |
| tmkyd | RSA Signatures | 25 | |
| AliosPBC | Extended GCD | 20 | |
| MarBol | XOR Starter | 10 | |
| Anna_skarlatou | Modular Exponentiation | 10 | |
| CyberSlayer | Great Snakes | 3 | |
| CyberSlayer | Finding Flags | 2 | |
| Anna_skarlatou | Scalar Multiplication | 35 | |
| Aeneas7 | Jack's Birthday Confusion | 30 | |
| tmkyd | RSA Decryption | 20 | |
| saba | Great Snakes | 3 | |
| yassinebad | Privacy-Enhanced Mail? | 25 | |
| tmkyd | Private Keys | 20 | |
| asb2602 | Jack's Birthday Hash | 20 | |
| tmkyd | Euler's Totient | 20 | |
| tmkyd | Public Keys | 15 | |
| maxw44266 | XOR Properties | 15 | |
| Aeneas7 | Jack's Birthday Hash | 20 | |
| saba | Finding Flags | 2 | |
| tmkyd | Modular Exponentiation | 10 | |
| CHGHFJHJ | Greatest Common Divisor | 15 | |
| tmkyd | Bytes and Big Integers | 10 | |
| AliosPBC | Greatest Common Divisor | 15 | |
| Zhanyl | Resisting Bruteforce | 10 | |
| S1RJAM3S | Paper Plane | 120 | |
| tmkyd | Base64 | 10 | |
| tmkyd | Hex | 5 | |
| Zhanyl | Keyed Permutations | 5 | |
| Kishey | You either know, XOR you don't | 30 | |
| Aeneas7 | Generators of Groups | 20 | |
| Aeneas7 | Working with Fields | 10 | |
| Voloda | Finding Flags | 2 | |
| Fksman | Resisting Bruteforce | 10 | |
| ForsakenZealot | Base64 | 10 | |
| athinasiakantari | Bytes and Big Integers | 10 | |
| Fksman | Keyed Permutations | 5 | |
| Aeneas7 | Successive Powers | 60 | |
| Fksman | Greatest Common Divisor | 15 | |
| ForsakenZealot | Hex | 5 | |
| kz0 | Finding Flags | 2 | |
| ForsakenZealot | ASCII | 5 | |
| LeeKangHy | Working with Fields | 10 | |
| Fksman | You either know, XOR you don't | 30 | |
| Kishey | Favourite byte | 20 |
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