removing malware like flash player virus
since upgrading my macbook pro to 10.12.6 last year, I have had some kind of malware that opens new tabs in my chrome browser, sometimes amazon, sometimes a tab that says flash player is out of date, or that I have a virus. PLEASE help me eradicate this most annoying problem! THX.
MacBook Pro with Retina display, macOS Sierra (10.12.6)