| Date | User | Challenge | Score |
| beow | Finding Flags | 2 | |
| zhaopy | Inferius Prime | 30 | |
| Linda_JMXS | Finding Flags | 2 | |
| Zendex | Finding Flags | 2 | |
| corua | Unencryptable | 125 | |
| FieryBanana101 | Missing Modulus | 80 | |
| Cloudown | Extended GCD | 20 | |
| aj1002 | Modular Square Root | 35 | |
| admani1 | ProSign 3 | 100 | |
| yuliyost | Signing Server | 60 | |
| LONG_crypro | Round Keys | 20 | |
| ronrikwed | Extended GCD | 20 | |
| admani1 | Curveball | 100 | |
| Ridika_Naznin | You either know, XOR you don't | 30 | |
| d3v_k1r4 | Extended GCD | 20 | |
| mpj_x | Great Snakes | 3 | |
| mpj_x | Finding Flags | 2 | |
| charlesfuss4 | Factoring | 15 | |
| ghaisan | Gaussian Reduction | 50 | |
| abdullahryan | Finding Flags | 2 | |
| JacobLu3141 | ECB CBC WTF | 55 | |
| ghaisan | What's a Lattice? | 40 | |
| oxlulz | Hex | 5 | |
| Ridika_Naznin | Favourite byte | 20 | |
| oxlulz | ASCII | 5 | |
| charlesfuss4 | RSA Signatures | 25 | |
| oxlulz | Great Snakes | 3 | |
| oxlulz | Finding Flags | 2 | |
| serene7878787 | Modular Inverting | 25 | |
| sal4 | XOR Starter | 10 | |
| cyk0sure | Blinding Light | 120 | |
| TeaQuicky | Modes of Operation Starter | 15 | |
| 3kn0ch | You either know, XOR you don't | 30 | |
| psr354 | XOR Starter | 10 | |
| psr354 | Bytes and Big Integers | 10 | |
| charlesfuss4 | RSA Decryption | 20 | |
| aj1002 | Legendre Symbol | 35 | |
| psr354 | Base64 | 10 | |
| psr354 | Hex | 5 | |
| psr354 | ASCII | 5 | |
| psr354 | Great Snakes | 3 | |
| psr354 | Finding Flags | 2 | |
| wwz | Lo-Hi Card Game | 120 | |
| wwz | Jeff's LFSR | 150 | |
| LONG_crypro | Structure of AES | 15 | |
| zoyi | Modular Binomials | 80 | |
| yasminka | Jack's Birthday Hash | 20 | |
| Ridika_Naznin | XOR Properties | 15 | |
| yasminka | Decrypting TLS 1.3 | 35 | |
| P0ynt1ng | Hex | 5 |
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