| Date | User | Challenge | Score |
| Mejkl | Null or Never | 100 | |
| thomaslp31 | Lemur XOR | 40 | |
| thomaslp31 | Favourite byte | 20 | |
| bomboclatpanos | Everything is Big | 70 | |
| thomaslp31 | XOR Properties | 15 | |
| thomaslp31 | XOR Starter | 10 | |
| thomaslp31 | Encoding Challenge | 40 | |
| Feti | Bytes and Big Integers | 10 | |
| FernaldiSoepono | Base64 | 10 | |
| thomaslp31 | Bytes and Big Integers | 10 | |
| thomaslp31 | Base64 | 10 | |
| stavb | Resisting Bruteforce | 10 | |
| thomaslp31 | Hex | 5 | |
| aig_12 | Signing Server | 60 | |
| chad2424 | Great Snakes | 3 | |
| FernaldiSoepono | Hex | 5 | |
| chad2424 | Finding Flags | 2 | |
| Feti | Base64 | 10 | |
| Mitsouvis | Legendre Symbol | 35 | |
| nossblade | Modular Arithmetic 1 | 20 | |
| oGAD_ | Resisting Bruteforce | 10 | |
| Panos_p23236 | RSA Decryption | 20 | |
| nossblade | Extended GCD | 20 | |
| DIMITRISMANIATIS | ECB CBC WTF | 55 | |
| Kitakira | Network Attacks | 5 | |
| jerwas | Jack's Birthday Confusion | 30 | |
| marasdk | JWT Secrets | 25 | |
| nossblade | Greatest Common Divisor | 15 | |
| stavb | Keyed Permutations | 5 | |
| Feti | Hex | 5 | |
| Despoina | Structure of AES | 15 | |
| thomaslp31 | Great Snakes | 3 | |
| nossblade | You either know, XOR you don't | 30 | |
| thomaslp31 | Finding Flags | 2 | |
| jerwas | Jack's Birthday Hash | 20 | |
| oGAD_ | Keyed Permutations | 5 | |
| Panos_p23236 | Private Keys | 20 | |
| Feti | ASCII | 5 | |
| bomboclatpanos | Modulus Inutilis | 50 | |
| AmirWayne | Network Attacks | 5 | |
| Socrates | Finding Flags | 2 | |
| Feti | Great Snakes | 3 | |
| AryanChidumalla | Modular Inverting | 25 | |
| nossblade | Favourite byte | 20 | |
| victor_mks | Legendre Symbol | 35 | |
| Hazel | Let's Decrypt | 80 | |
| Feti | Finding Flags | 2 | |
| ziemniak | Crossed Wires | 100 | |
| Hazel | Signing Server | 60 | |
| Hazel | Ron was Wrong, Whit is Right | 90 |
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