Reuters. Ukrainians hackers of a group called Cyber Berkut took responsibility for the downtime of three NATO websites.
The nato.int, pa.int, ccdcoe.org websites stopped working after distributed DDOS attacks.
According to the hackers, the attack started on Saturday. Representatives of NATO admitted that several of the sites were the target "large DDOS attacks" but the data and the systems were not affected by the attacks.
The attacks kept 24 hours approximately.
With a statement posted on cyber-berkut.org in Russian, hackers claim to have attacked because they do not want NATO to intervene in Ukraine.
After the cessation of the attack, the activists have ironically noted that if NATO can not protect its systems, it is unlikely that it can also secure European citizens.
Berkut, in Ukrainian means "golden eagle," and is the name of the special police force tasked with handling the anti-government protests that took place recently in Ukraine.
The Cyber Berkut group seems to be somehow connected to them Anonymous of Ukraine, another hacktivist group that supports Ukraine's independence from NATO and the West in general.
In November of 2013, Anonymous of Ukraine launched DDOS attacks against the CCDCOE website of NATO. Later, hackers leaked files allegedly stolen from the opposition's computer systems.