Instead of some names or numbers that specify a whole range of products, a serial number is intended to provide a unique number to one device at a time. The idea behind serial numbers is to identify a specific item, much like how a fingerprint identifies a specific person. What can someone do with an iPhone serial number? But he could scam someone else on (e.g.) eBay into buying a non-existing Mac by giving the buyer your serial number.

There’s nothing much a hacker could do to you with your serial. What can hackers do with your serial number? The serial number is sometimes used only for warranty control and sometimes used for both warranty control and for version control. What can serial number be used for? A serial number (SN) is a number assigned to each individual product in order to distinguish that product from all others. The hacker would have to have physical access to your device, it to be unlocked, and for Find My iPhone to be disabled.

Unless your device is jailbroken, or someone has access to your unlocked device, they cannot hack it, especially with just your serial number.

Find apple serial number