It is known that if any user experiences this type of pop-up, he/she receives a suspicious message that claims about e.tre456_worm_osx trojan and other virus-related system infections. What is ? – a pop-up which brings false information to promote third-party Mac cleaning toolsĪ is a pop-up scam which delivers intrusive notifications on Mac computers onlyĪ is considered to be a scamming application which has a goal to promote rogue Mac cleaning software.