| Date | User | Challenge | Score |
| chinmoy_paul | Quadratic Residues | 25 | |
| bbalucs | Sharks on the Wire | 10 | |
| bbalucs | RSA or HMAC? Part 2 | 100 | |
| bbalucs | JSON in JSON | 40 | |
| bbalucs | RSA or HMAC? | 35 | |
| chinmoy_paul | Bean Counter | 60 | |
| chinmoy_paul | Triple DES | 60 | |
| bbalucs | JWT Secrets | 25 | |
| Stephen_A | Hash Stuffing | 50 | |
| bbalucs | Collider | 50 | |
| lisakbentley | Hex | 5 | |
| Stephen_A | Blinding Light | 120 | |
| DeepL123 | Finding Flags | 2 | |
| bbalucs | Null or Never | 100 | |
| chinmoy_paul | Inferius Prime | 30 | |
| chinmoy_paul | Dancing Queen | 120 | |
| chinmoy_paul | Lazy CBC | 60 | |
| bbalucs | RSA Backdoor Viability | 175 | |
| lisakbentley | ASCII | 5 | |
| chrisfox | Quadratic Residues | 25 | |
| bbalucs | Ron was Wrong, Whit is Right | 90 | |
| bbalucs | Fast Primes | 75 | |
| chinmoy_paul | Manyprime | 40 | |
| chinmoy_paul | Square Eyes | 35 | |
| chinmoy_paul | Monoprime | 30 | |
| chinmoy_paul | Stream of Consciousness | 80 | |
| chinmoy_paul | CTRIME | 70 | |
| chinmoy_paul | Symmetry | 50 | |
| chinmoy_paul | Passwords as Keys | 50 | |
| chinmoy_paul | Modes of Operation Starter | 15 | |
| bbalucs | Factoring | 15 | |
| chinmoy_paul | Flipping Cookie | 60 | |
| chinmoy_paul | ECB Oracle | 60 | |
| chinmoy_paul | Modular Inverting | 25 | |
| chinmoy_paul | Modular Arithmetic 2 | 20 | |
| chinmoy_paul | Modular Arithmetic 1 | 20 | |
| chinmoy_paul | Extended GCD | 20 | |
| rutuja | XOR Properties | 15 | |
| Ruel | Round Keys | 20 | |
| chinmoy_paul | You either know, XOR you don't | 30 | |
| khxjn | Bean Counter | 60 | |
| chinmoy_paul | Favourite byte | 20 | |
| chinmoy_paul | Greatest Common Divisor | 15 | |
| chinmoy_paul | Encoding Challenge | 40 | |
| chinmoy_paul | XOR Properties | 15 | |
| chinmoy_paul | XOR Starter | 10 | |
| chinmoy_paul | Bytes and Big Integers | 10 | |
| Ter3Sni | ECB CBC WTF | 55 | |
| chrisfox | Modular Inverting | 25 | |
| chinmoy_paul | Network Attacks | 5 |
You are now level Current level