Pop-ups about hacking on iPhone

It is a scam message designed to get you to purchase unnecessary software or phish for personal information. Just delete them.

Read more about it here -

Recognize and avoid social engineering schemes including phishing messages, phony support calls, and other scams - Apple Support

These are scam messages that are trying to trick you into buying useless software that will do nothing to help your phone.

We all get these, just like we all get junk mail and junk messages.

Ignore and delete the messages.

You’re probably frequenting sketchy web sites. That’s usually how it happens in my experience

Saegzz wrote:

You’re probably frequenting sketchy web sites. That’s usually how it happens in my experience

It can happen on almost any website. I rarely visit "sketchy" websites, but it happens to me occasionally.