How to remove malware from iPhone 13?

Contact your IT administrator or MDM provider to obtain the latest MDM profile.

1. Is this your corporate iPhone? Then please contact the system administrator of your corporate
2. If it is your personal device, in that case, do you have any profile installed by your corporate/organisation/enterprise/School Management?
   1. Erase the profile added by you If you have installed a profile on your own --> Install or remove configuration profiles on iPhone - Apple ...
   2. Or please contact the system administrator of the organisation who provided the profile to you
3. If you want to turn on SSL trust for that certificate, go to Settings > General > About > Certificate Trust Settings. Under "Enable full trust for root certificates," turn on trust for the certificate. Apple recommends deploying certificates via Apple Configurator or Mobile Device Management (MDM). --> Trust manually installed certificate profiles in iOS and iPadOS ...

When a corporate profile (like a Mobile Device Management or MDM profile) is installed on an iPhone, it can control various parts of the device, including iCloud settings — but it depends on what the company has configured in that profile.

If the MDM profile enforces certain restrictions — like disabling iCloud Drive, iCloud Photos, or iCloud Keychain — those features might get turned off. In that case, data tied to those services (like photos, documents, or app data) won’t be deleted from iCloud itself, but they will be removed from the local device until the restriction is lifted.

However, if the corporate profile removes or signs you out of your iCloud Apple ID entirely, that could lead to more significant data loss on the device — like contacts, calendars, and notes if they were syncing through iCloud. Again, that data would still exist in iCloud (unless specifically wiped remotely), but it would disappear from the phone.

One big thing to watch out for: some corporate profiles can include remote management capabilities, which could let the company wipe the device entirely, including iCloud-related content.

So the loss of data on the device is possible — but whether it’s also removed from iCloud depends on the specific policies set up in the MDM profile and the actions the company takes.

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

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

The screenshot shows a certificate. Malware does not broadcast its presence.