The attack lasted between eight and eleven hours.
The Register explains:
More than 750 domain names were hijacked through the internet's own systems, registrar Gandi has admitted.
Late last week, an unknown individual managed to get hold of the company's login to one of its technical providers, which then connects to no fewer than 27 other top-level domains, including .asia, .au, .ch, .jp and .se.
Using that login, the attacker managed to change the domain details on the official nameservers for 751 domains on a range of top-level domains, and redirect them all to a specific website serving up malware.