: Only trust security information found directly within the iOS Settings app or the official Apple Support website. What to Do If You Clicked a Shady Link If you accidentally clicked a suspicious link:
Certain jailbreak tools or bootrom exploits (e.g., checkm8) rely on the SEID for device-specific key derivation. A check link might be used in research environments to validate that a given SEID responds to custom activation requests.
When to contact Apple

: Only trust security information found directly within the iOS Settings app or the official Apple Support website. What to Do If You Clicked a Shady Link If you accidentally clicked a suspicious link:
Certain jailbreak tools or bootrom exploits (e.g., checkm8) rely on the SEID for device-specific key derivation. A check link might be used in research environments to validate that a given SEID responds to custom activation requests. seid iphone check link
When to contact Apple