301, 302 and 404 page errors

In simple terms 301, 302 and 404 are the error codes returned by a server.

301

A page has been permanently moved to a new location.

302

A page has been moved to a temporarily location.

404

The most infamous error - Page not found. This status is returned when the requested page doesn’t exist on the server.

302 page hijacking

This is one of the hottest topics now a days among SEO experts. A 302 redirection can be highjacked to redirect to another location by exploits.