How can I determine if my MacBook Air has been hacked
A security alert popped up when browsing google and a macOS support no. to call. Screen was locked up. Called and was talked into entering website on another computer and going thru a lot of 'now enter this...' and eventually he wanted me to log into financial sites. ****!!
Question is how can I determine if the Mac has be hacked. I've gotten the screen unlocked but am hesitant to use for any transactions.
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MacBook Air