To kill a popup

[dubina]

I scanned my iMac with ClamXav. It found 12 old phishing emails (Bank America spoof ca 2012) and I deleted them according to the protocol. Unfortunately, that did not remove the "Congratulations User" popup that has been bugging me for the past month or so. How can I kill the popup without downloading some av package that is more intrusive and annoying than the popup?

 

[Apple_Robert]

After a quick search, it looks like the following short link will benefit you.

https://discussions.apple.com/thread/6649000