The hacktivist group claimed responsibility for the attack, which was in retaliation for PayPal's refusal to process payments for WikiLeaks.
According to Ukraine's security service, members of the country's parliament, regardless of party affiliation, are being targeted in the attack.
The hacktivist collective claims to have caused more than $3 billion in damage in protest against treatment of Palestinians, but officials say the attack has caused minimal disruption.
Malicious computer codes and an IP address point to North Korea as the source of the attack, according to South Korea.
An e-mail claiming to be from the Chinese Ministry of National Defense actually contains a piece of malware that exploits a hole in Microsoft Office, says Trend Micro.
An online attack by a group called "Whois Team" downed servers at TV broadcasters and banks. Police are investigating the incident amid speculation North Korea may be involved.
The newspaper's domain name registrar says that someone took over a reseller account on Melbourne IT's systems to take down the Web site of The New York Times.
The New York Times Web site is down for the second time this month, and this time the paper says it's likely from a "malicious external attack."
The United States denies it was involved in any attack on the French government, calling it a top ally.
Servers for banks, TV broadcasters, and an ISP in the country were paralyzed by a massive attack, leading to suspicions that North Korea was responsible.