| Date | User | Challenge | Score |
| chrisfox | Finding Flags | 2 | |
| Laniakea24 | Round Keys | 20 | |
| junho | Modes of Operation Starter | 15 | |
| yr81 | Infinite Descent | 50 | |
| Laniakea24 | Structure of AES | 15 | |
| junho | Bringing It All Together | 50 | |
| hiabao | XOR Starter | 10 | |
| Next0202 | Adrien's Signs | 80 | |
| kay240208 | You either know, XOR you don't | 30 | |
| brew | Modulus Inutilis | 50 | |
| kay240208 | Favourite byte | 20 | |
| brew | Square Eyes | 35 | |
| kay240208 | XOR Properties | 15 | |
| Alex1027 | Base64 | 10 | |
| Alex1027 | Hex | 5 | |
| Alex1027 | ASCII | 5 | |
| Alex1027 | Great Snakes | 3 | |
| brew | Inferius Prime | 30 | |
| Alex1027 | Finding Flags | 2 | |
| kay240208 | XOR Starter | 10 | |
| raphckrmannn | You either know, XOR you don't | 30 | |
| Sungyeon | Collider | 50 | |
| Sungyeon | Jack's Birthday Confusion | 30 | |
| Sungyeon | Jack's Birthday Hash | 20 | |
| einwickler | Base64 | 10 | |
| Sungyeon | Let's Decrypt Again | 175 | |
| Sungyeon | Vote for Pedro | 150 | |
| Sungyeon | Blinding Light | 120 | |
| Sungyeon | Let's Decrypt | 80 | |
| Sungyeon | Signing Server | 60 | |
| Sungyeon | Null or Never | 100 | |
| Sungyeon | Bespoke Padding | 100 | |
| Sungyeon | RSA Backdoor Viability | 175 | |
| Sungyeon | Ron was Wrong, Whit is Right | 90 | |
| raphckrmannn | Favourite byte | 20 | |
| Sungyeon | Fast Primes | 75 | |
| kay240208 | Bytes and Big Integers | 10 | |
| Sungyeon | Marin's Secrets | 50 | |
| Sungyeon | Infinite Descent | 50 | |
| Sungyeon | Endless Emails | 150 | |
| Sungyeon | Everything is Still Big | 100 | |
| Sungyeon | Crossed Wires | 100 | |
| Sungyeon | Everything is Big | 70 | |
| Sungyeon | Modulus Inutilis | 50 | |
| Sungyeon | Salty | 20 | |
| Sungyeon | Manyprime | 40 | |
| Sungyeon | Square Eyes | 35 | |
| Sungyeon | Monoprime | 30 | |
| einwickler | Hex | 5 | |
| Sungyeon | Inferius Prime | 30 |
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