Spamhaus' website has been buffeted by massive denial-of-service attacks since mid-March. Photo: SCMP Pictures

Cyberattack on anti-spam watchdog slows global internet

An internet watchdog group responsible for keeping ads for counterfeit Viagra and bogus weight-loss pills out of inboxes around the world has been hit by a huge cyberattack, a crushing electronic onslaught that one expert said had already had ripple effects across the internet.