Rockwell Automation has acknowledged security issues related to password protection in RSLogix 5000. For instance, documented that RSLogix 5000 versions 7 through 20.01 and 21.0 do not properly implement password protection for .ACD project files, allowing local users to obtain sensitive information or modify data via unspecified vectors.
Using online tools for proprietary code carries significant security risks. 2. Manual L5X Editing rslogix 5000 source protection decryption tool
Some unauthorized utilities can parse older .skf files or extract plaintext passwords from temporary memory allocations while RSLogix is running. rslogix 5000 source protection decryption tool