Apple ID email about unknown sign in
Hi there. I’ve received an email yesterday and just now regarding my official email has been used by someone unknown and they using my email to sign in macbook 13 and imessage. I’ve never use my official email to sign in/register anything on my iphone (i’ve been using my personal email to register/sign in). How i need to respond or what should i do regarding this matter? Herewith attached a screenshot to my email. Anything regarding iphone i’ve use ****@ yahoo.com and never use ****@ yahoo.com to sign in/
Thank you
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