I received a text alert from Capital One fraud alerting me of unusual activity someone replied to the text confirming the activity. I have an Iphone. How can they get access to my phone and what do I need to do to secure it? I've called Capital One and card is inactive my primary question is.. do I have some sort of malware on my phone? Can I search it? How do I secure my phone? Any help would be greatly appreciated thank you
Your iPhone (assuming its relatively current) can perform SMS relaying, sending/receiving messages using the iMessage app, on other devices that are logged in to your account. You should check your associated devices via the Apple web site to ensure there are no unknown devices listed and remove them if there are.
Assuming you are not using a jailbroken iPhone your apps should be safe, but to be sure you should review all the installed apps on your phone for any that were recently installed that you don't recognize.