Can localStorage be modified by a client?

Question

I\'m attempting to use localStorage as a cookie replacement (detest cookies) so users can stay signed in on a site I operate.

What I planned so far was to save the u

Answer 1

Local storage is bound to the domain, so in regular case the user cannot change it on any other domain or on localhost.

It is also bound per user/browser, i.e. no third party has access to ones local storage.

Nevertheless local storage is in the end a file on the user's file system and may be hacked.