Yes, I'm getting fake security alerts constantly and when I decline them porno pages open up.
Avast did not detect anything, I ran a scan and scanned the file, both came back clean. I have a firewall through Avast
I installed MalwareBytes Anti-Malware but it will not let me run the program, it says it's an infected program and I should install their ( AV Securities) antivirus software.
I never had a problem with the older free version of Avast I was using till just a few days ago.