[cybrexalpha]

On a Mac, factory reset it unless I got it direct from Apple (ideally picked up by hand from an Apple Store). On any other laptop, full erase and install Linux or Windows from scratch.

[typetheorist]

If the package was sealed, why factory reset?

[bradknowles]

Because anyone can buy a plastic sealer.

They could have put a brick in the box, then put the box through the sealer, and who would be the wiser?