If you use the Get Plugins feature ( On the Preferences Menu), those PI come from here at MR.
These are almost always Python (txt) code (inside the Zip), so you can have a code review

if you want.
And how long do you think something Nasty would
remain posted here
BTW
if you (or anyone) ever
did find something bad (or funky), use the Report button next to the Message #. The Moderation team will review the situation