So here's my story : Phone : Galaxy S10 with latest updates. My ex got her I.T brother to hack into my phone & read all my whatsapp sms, & other social media conversations. How do i know this? everytime i would chat with a friend on whatsapp,sms etc they would get a anonymous call, sometimes harassing calls & even threatening. i have anti virus & did a scan, no malware phone is clean. so this had been goin on for a few months until unknowingly she forgot to hide her phone number when calling a friend of mine to harass. Can someone explain how this hack happened ? no software installed on my phone for hacker to view phone content. Also, what can i do to secure my phone to prevent future incidents like this?