It's obviously a false positive, but I think in some Sick way it would be hilarious if it turned out to not be "We saw what looked like a hack but there was zero evidence to show any actual intrusion into our system" where have we heard that before? lol
Honestly, I really didn't care. It did it to me on Tuesday, so I ignored it, and it did it again yesterday, and once again, I ignored it. Everything is fine, as my Spy Sweeper would have told me if there was an issue.