Known as distributed denial of service, the attacks employ multiple computers to flood networks with millions of simultaneous requests, overwhelming servers and crippling Web sites.

CNN: U.S. at risk of cyberattacks, experts say

The group's members employed techniques to flood websites with high traffic - known as DDoS attacks - in order to render them unusable.

BBC: UK Lulzsec hacker Ryan Ackroyd pleads guilty

India's top federal investigation agency will probe a series of attacks on rare one-horned rhinos by suspected poachers in the flood-hit state of Assam, a senior minister has said.

BBC: India probes attacks on rhinos in Assam state