Virus on my MacBook Air
hello i just got a message on my macbook air that says i have 4 virus detected on it and its asking me to download something to get rid of them and i dont know what to do. I just bought this MacBook and I haven't put in any usb's and all the websites I've gone into r protected and I have opened on many other devices and I never get a virus from any of them. I don't know what it is so if anyone could help that would be great