| Date | User | Challenge | Score |
| donatsell | Favourite byte | 20 | |
| ouias | Monoprime | 30 | |
| rapt00r | Structure of AES | 15 | |
| IsraelMC9 | Background Reading | 5 | |
| ViscaBarcelona | Base64 | 10 | |
| rapt00r | Resisting Bruteforce | 10 | |
| ouias | Factoring | 15 | |
| rapt00r | Keyed Permutations | 5 | |
| ouias | RSA Signatures | 25 | |
| hmd0102 | Ron was Wrong, Whit is Right | 90 | |
| donatsell | XOR Properties | 15 | |
| ViscaBarcelona | Hex | 5 | |
| rapt00r | Modular Binomials | 80 | |
| LemonHeart | Secure Protocols | 5 | |
| LemonHeart | RSA or HMAC? Part 2 | 100 | |
| LemonHeart | JSON in JSON | 40 | |
| LQUICK | Base64 | 10 | |
| mam1335 | Export-grade | 100 | |
| LemonHeart | RSA or HMAC? | 35 | |
| LemonHeart | JWT Secrets | 25 | |
| LemonHeart | No Way JOSE | 20 | |
| LemonHeart | JWT Sessions | 10 | |
| LemonHeart | Token Appreciation | 5 | |
| LQUICK | Hex | 5 | |
| LemonHeart | Hash Stuffing | 50 | |
| LemonHeart | Collider | 50 | |
| LemonHeart | Jack's Birthday Confusion | 30 | |
| LemonHeart | Jack's Birthday Hash | 20 | |
| LemonHeart | Let's Decrypt Again | 175 | |
| LQUICK | ASCII | 5 | |
| LemonHeart | Vote for Pedro | 150 | |
| LemonHeart | Blinding Light | 120 | |
| LemonHeart | Let's Decrypt | 80 | |
| LemonHeart | Signing Server | 60 | |
| LemonHeart | Null or Never | 100 | |
| LemonHeart | Bespoke Padding | 100 | |
| LemonHeart | RSA Backdoor Viability | 175 | |
| LemonHeart | Ron was Wrong, Whit is Right | 90 | |
| LemonHeart | Fast Primes | 75 | |
| ViscaBarcelona | ASCII | 5 | |
| LemonHeart | Marin's Secrets | 50 | |
| LemonHeart | Infinite Descent | 50 | |
| LemonHeart | Endless Emails | 150 | |
| LemonHeart | Everything is Still Big | 100 | |
| mochatapioca | You either know, XOR you don't | 30 | |
| Mxj70 | ASCII | 5 | |
| grodriguez949 | Network Attacks | 5 | |
| grodriguez949 | You either know, XOR you don't | 30 | |
| LemonHeart | Crossed Wires | 100 | |
| ViscaBarcelona | Great Snakes | 3 |
You are now level Current level