The cyber hacktivists are divided over #OperationTrump, with some saying it was counter to their tradition of not taking sides in political contests.
Brazil is bracing for the first wave of nationwide demonstrations against staging the World Cup after activists called for action on social media.
A Reuters deputy social media editor accused of conspiring with hackers to deface a Los Angeles Times story says he has been fired.
South Korea says computers in the North were used for an onslaught that wiped hard drives on PCs at TV stations and disrupted banks.
Burger King's Twitter account was hacked apparently by hackers from Anonymous who took it over and rebranded it with rival McDonald's logo and name.
Anonymous SA has condemned hacks by GhostShell, saying its plan to "rid South Africa of corruption" was not the same as that of the latest group's.