The country has been suffering a large number of cyber-attacks after it was involved in a bitter row with Russia over a Soviet war memorial.
Estonian Defence Minister Jaak Aaviksoo told AFP that both the EU and NATO clearly need to take a much stronger approach and cooperate closely to develop practical ways of combatting cyber-attacks.
He said that if you take into account the scale of damage and the way cyber-attacks are organised, you can compare them to terrorist activities.
Estonian officials have have claimed that some of the cyber attacks, which forced the authorities in the Baltic state to temporarily shut down websites, came from Russian government computers, including some from the office of President Vladimir Putin.
Aaviksoo said that the EU and NATO need to work out a common legal basis to deal with cyber attacks.
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