Notorious hacker group Anonymous on posted a defiant message to police Thursday and boasted of plundering sensitive data from NATO computers.
Microsoft on Monday said that cyber crime "command" servers in two US states were seized in an ongoing campaign to sever online crooks from infected computers used as virtual henchmen.
A series of brazen cyberattacks on America's most high-profile media outlets has revived concerns over Chinese hackers, who analysts say are likely linked to the secretive Beijing government.
Hackers have claimed the scalp of the South African Ministry of State Security's Twitter account, underlining concerns that Africa may be the soft underbelly of global cyber security.
Japan will punish people who create or wilfully spread computer viruses with fines and prison terms of up to three years under a new law enacted by parliament.
South Korean police said Friday they had charged 22 people with spreading rumours and false information online or in text messages after North Korea shelled an island in the South, a news report said.
The government is set to announce new measures to tackle cyber crime on Friday as Britain's internet and electronic communications network comes under increased attack from hackers and foreign intelligence agencies.
Cyber crimes are not only increasing, but they are also costing companies more money, a recent study has found.
Interpol president Khoo Boon Hui said on Tuesday that organised international gangs are behind most internet scams and that cyber crime's estimated cost is more than that of cocaine, heroin and marijuana trafficking put together.
Hacker groups LulzSec and Anonymous announced on Monday that they had hacked into the website of Italy's cyber police and published classified information online in an attack dubbed "Operation Italy".