| Date | User | Challenge | Score |
| J4n | Great Snakes | 3 | |
| kotoha_knth | Encoding Challenge | 40 | |
| j_m | Micro Transmissions | 120 | |
| Sherpearce | Structure of AES | 15 | |
| R4ff1 | Finding Flags | 2 | |
| Antonio_margaret | XOR Starter | 10 | |
| Antonio_margaret | Bytes and Big Integers | 10 | |
| j_m | Static Client 2 | 120 | |
| j_m | Additive | 70 | |
| j_m | Static Client | 100 | |
| j_m | Export-grade | 100 | |
| j_m | Parameter Injection | 60 | |
| j_m | Deriving Symmetric Keys | 40 | |
| j_m | Computing Shared Secrets | 30 | |
| j_m | Computing Public Values | 25 | |
| j_m | Generators of Groups | 20 | |
| j_m | Working with Fields | 10 | |
| D3OX6 | Couples | 100 | |
| Antonio_margaret | Base64 | 10 | |
| Antonio_margaret | Hex | 5 | |
| Yeonjae | Private Keys | 20 | |
| debil_sro | Base64 | 10 | |
| debil_sro | Hex | 5 | |
| Antonio_margaret | ASCII | 5 | |
| Antonio_margaret | Great Snakes | 3 | |
| Antonio_margaret | Finding Flags | 2 | |
| Akim34 | Finding Flags | 2 | |
| Yeonjae | Public Keys | 15 | |
| Megablaze | Finding Flags | 2 | |
| Dersteppenwolf74 | Bytes and Big Integers | 10 | |
| origabai | JSON in JSON | 40 | |
| Yeonjae | Modular Exponentiation | 10 | |
| origabai | RSA or HMAC? | 35 | |
| deep07 | XOR Properties | 15 | |
| Garg_ji2007 | Finding Flags | 2 | |
| b1b00www | Ron was Wrong, Whit is Right | 90 | |
| Ira0a | Bytes and Big Integers | 10 | |
| j_m | Prime and Prejudice | 200 | |
| Yasminst2012 | Finding Flags | 2 | |
| nighty_night | Great Snakes | 3 | |
| origabai | Decrypting TLS 1.3 | 35 | |
| nighty_night | Finding Flags | 2 | |
| kotoha_knth | ProSign 3 | 100 | |
| BarredOwl | You either know, XOR you don't | 30 | |
| origabai | Decrypting TLS 1.2 | 30 | |
| achu72 | Greatest Common Divisor | 15 | |
| kotoha_knth | Curveball | 100 | |
| j_m | Let's Decrypt Again | 175 | |
| deadlypool | XOR Starter | 10 | |
| deep07 | XOR Starter | 10 |
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