USS and ISSO here
If just the information at the top of the PER is filled out technically it's only Protected A. For those that fill out the PER with all the write up but leave the tombstone data out, it's still Protected B and as an ISSO if I had to do an ISSIR on this I would classify it as a security breach. Please don't try the "but it only says Cpl Bloggins in it", I can tell you that by reading the write-up I will very likely be able to tell you who the PER is for and it should be encrypted.
As for "copies", in accordance with CFPAS there are only two versions allowed to be in existence once the PER is completed and signed by all parties. The original goes on a merit file (the merit file exists in different places for RegF vs NAVRES vs Militia), one copy is made and given to the individual who's PER it is. That is it, that is all - any other copies are in contravention of CFPAS.
What a member decides to do with their PER is up to them, it's their document and information regarding them. If they want to scan it and post it to Facebook, all the more power to them. If anyone else has a copy of it, it's in contravention of CFPAS. If anyone else an electronic copy of it and it's not encrypted than it's an IS Security Infraction and an ISSIR should be completed.
Advice from an ISSO... encrypt working copies, once they're delivered to the individual, delete all electronic copies and ensure you don't have "working copies."