iPhone hacked via contact sharing at a bar in Ft Lauderdale

This certainly fits with the modern definition of “hacked”; that something has changed, and the person experiencing the change does not understand what happened.

While iPhone hacks do exist, they’re exceedingly rare, targeted, and expensive, based on available information.

In this case, the bar patron likely demonstrated a feature of iPhone known as NameDrop.

NameDrop is not a security problem, nor a hack:

Use NameDrop on iPhone to share your contact info - Apple Support

You can control NameDrop:

Secure NameDrop - Apple Support

Given your reference to Fitness, here is how to add a friend in Fitness:

Share your activity in Fitness on iPhone - Apple Support

Oh, and I’d keep my phone in my pocket in crowds. Not because of hacks, or NameDrop, just for crowd awareness, and for reducing thefts.

The CC was not a C compilation command, as iPhone has no C compiler installed and nobody is going to install a C compiler as part of exploiting a security vulnerability. More likely, the CC you saw likely the initials of the person you were chatting with. Apple uses initials as an avatar in various placed. (This initials avatar is guess, as the info or image has not been posted, and I don’t know if Claudiade’s initials are alliterative. Probably wasn’t Claudia de' Medici, though Claudia de C-something is certainly possible.)

To assuage some of your concerns here and to check your location sharing settings, run Safety Check:

Personal Safety User Guide - Apple Support

If you are still uncertain, then you can take steps to cut off their access completely:

1. Immediately change your Apple ID password
   1. Go to Settings → [your name] → Sign-In & Security → Change Password.
   2. These signs out anyone using your account.
2. Enable Two-Factor Authentication (if not already): Same menu → Two-Factor Authentication → Turn On.
3. Check for any unknown devices linked to your account:
   1. Settings → [your name] → Devices.:
   2. If you see anything you don’t recognize, tap it → Remove from Account.
4. Check for unknown profiles or device management:
   1. Settings → General → VPN & Device Management.
   2. If you see a profile you didn’t install, tap it → Remove Profile.
5. Check Accessibility & Screen Sharing settings
   1. Settings → Accessibility → Switch Control, Voice Control, or Remote Control — turn off anything you didn’t set up.
   2. Settings → General → AirPlay & Handoff → make sure AirPlay is set to Ask or Never Automatically.
6. Sign out of iCloud everywhere and reset
   1. Go to Settings → [your name] → Sign Out (you’ll need your password).
   2. Then back up your photos to iCloud or your computer.
   3. Go to Settings → General → Transfer or Reset iPhone → Erase All Content and Settings.:
   4. Set it up as a New iPhone (not from a backup), so nothing suspicious is restored.
7. Update iOS: Always keep the latest iOS version for security fixes.

If a person has ever had your passcode, they could’ve installed something quietly — so the full erase and setting up as new is the safest option. How to factory reset your iPhone, iPad, or iPod touch

monteath224 wrote:

No. Im getting the impression that when I changed her first name from my hysteria I somehow saved it as my own contact card. I suspect that is the likely explanation. I wish it had a very helpful warning like this will replace your personal information.

Switching the iPhone user’s identity to a different contact card is the whole purpose of that My Info control.

It is quite possible to encounter similar problems and fears and scams with an iPhone set to Assistive Access (which removes much of the complexity of iPhone), and even with a feature phone.

You can choose to learn about your iPhone and how it works here:

iPhone User Guide - Apple Support

And learn about some of the myriad social engineering and romance scams and other scams — scams that are far more common than the risks from how hacks are commonly portrayed in entertainment — here:

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

If you’re concerned about your privacy-related settings, run Safety Check:

Safety Check for an iPhone with iOS 16 or later - Apple Support

And that guide can be useful more generally:

Personal Safety User Guide - Apple Support

monteath224 wrote:

Its a great feature. If I fill in a form it has her info. If I get a notification the app is notifying me with her name.

Go to Settings>Apps>Contacts>My Info and make sure that your contact card is selected.

monteath224 wrote:

No. Im getting the impression that when I changed her first name from my hysteria I somehow saved it as my own contact card. I suspect that is the likely explanation. I wish it had a very helpful warning like this will replace your personal information.

Changing that setting doesn't replace your information. Your card isn't changed or deleted. It just directs the phone to use a different card.

I think the best advice I can give are the immortal words of Douglas Addams: "Don't panic!" Panic makes us act rashly without thinking or observing. Unless you unlock your phone and hand it to someone, there isn't much they can do.

Glad you got it sorted out.

monteath224 wrote:

I just went into contacts and changed my contact card back to my own info. I hope thats all there is to it now.

Did somebody else have access to your unlocked iPhone?

monteath224 wrote:

Why does my contact card have her contact information. Her picture etc. My notifications have her name. Its a pretty good trick

Is your Settings > Apps > Contacts > My Info setting as expected?

Because that's how name-drop works.

Read the article linked above detailing that feature.

Keep the iPhone updated to the latest iOS always and never Jailbreak. That's it.

iOS / iPadOS devices cannot be hacked or infected with Virus / Malware / Spyware *** unless you have intentionally downloaded spurious software or unauthorized apps directly from the internet and installed them on your device or/and have Jailbroken. 

It (Hacking) also depends on how careful you are in sharing sensitive and valuable information pertaining to your iPhone such as Passcode, Password, etc with your friends and family members.

Be judicious when sharing the device's sensitive and valuable information with friends and family members.

**The primary reason for this is Sandboxing. All third-party apps are “sandboxed”, so they are restricted from accessing files stored by other apps or from making changes to the device. Sandboxing is designed to prevent apps from gathering or modifying information stored by other apps.

Security of runtime process in iOS and iPadOS - Apple Support

The sandbox on an iPhone is a security feature that creates a restricted environment for each app to run in isolation from other apps and the operating system. It is a core component of iOS's security architecture and plays a crucial role in making iPhones more secure.

If you doubt the authenticity of the information provided earlier, you have two alternatives:

1. Report the hacking incident to local law enforcement authorities and actively pursue the case.
2. Accept the credibility of the information; it is impervious to hacking. Just as some individuals hold unconventional beliefs, such as a flat Earth or moon landing denial, one has the freedom to believe in anything. The choice ultimately rests with you in this open and free world.

If you feel an unauthorized person/app is remotely using, controlling or monitoring your device, then that is possible only if you have done one or more of the following Don'ts...

1. Don't hand over an iPhone to kids or to a stranger without Enabling Guided Access
2. Don't share Apple IDs
3. Don't Jailbreak
4. Don't share sensitive information pertaining to your device
5. Don't give in to Phishing
6. Don't plug in your device in Airports and Public places through third-party cables and trust the device. Beware of Juice Jacking. (Especially in India)
7. Don't leave your iPhone unlocked and unattended in public places like offices, schools, malls, etc.

If one of the above is true, then quickly change the Apple ID Password and Return iPhone settings to their defaults.

Here is some info on how contact sharing is supposed to work:

Use NameDrop on iPhone to share your contact info - Apple Support

If you can post a screenshot of those "script like characters", someone could probably explain them for you.

You were not "hacked".