Source: Source: Clark Boyd, BBC News.
In 2007, Estonia was the subject of a series of cyber attacks which crippled the internet across the country.
Banks, government departments and the national media all found their websites swamped by a tidal wave of spam which took them down.
The perpetrators were never caught.
Some evidence pointed to Russian government involvement in the attacks, but no definitive link to the Kremlin was found.
So was it the first ever act of cyber-war?
Cyber-war a growing threat warn experts
Published: June 17, 2010