I have doubt on “EWWW Image Optimizer” plug in now. I installed it to 4 of my sites.
All of them got infected.
I get this message to all of my sites.
Deceptive site ahead
Attackers on #######-002-site3.######.com may trick you into doing something dangerous like installing software or revealing your personal information (for example, passwords, phone numbers, or credit cards). Learn more
Turn out, my image was infected.