Hacktivists and gamers are becoming big users of net attacks that knock sites offline by bombarding them with data, suggests a report.
Compiled by Arbor Networks, the report looks at 10 years of distributed denial of service (DDoS) attacks.
The ease with which they could be staged had made them a favourite for groups with a grudge, said Arbor.
Also, it said, insecure home routers were being enrolled into large groups of devices that mounted the attacks.
Read the full story at BBC News