This whole thing is to do with using an IP address to identify an anonymous forum account and then sharing details of the ownership of this account with another member.
I will explain the best I can:
I'm a creative professional and frequent a forum dedicated to my industry. On the forum I have 2 accounts — one 'official' account under the name of my company, used to make official announcements etc, and a personal account under an anonymous username.
On the forum I had a discussion about a competitor company and made some personal comments about what I think about them. It's a small industry and the competitor company is very influential, so I wanted to keep these comments separate from my official company account and posted them from my anonymous personal account.
Weirdly (and this is what seems questionable to me) the forum owner has figured out that my personal account is linked to my professional account since they share an IP address, and has shared this info with my competitor. (As far as I know the competitor has a relationship with the forum owner because they advertise there regularly.)
Now my competitor knows that the anonymous account belongs to my company and can see my posts about them. The whole thing has caused a stir for me professionally since they are interpreting these comments as the official views of my company.
It seems like some law must have been breached during the sharing of this information? Does anyone have any insight?
I don't necessarily even want to do anything about this, but am just interested in the legality around it.