The seven biggest cybercrimes in history

3. Estonian cyber war

In 2007, a cyber crisis struck Estonia within hours of the relocation of a Soviet-era war memorial. Subjected to cyber terrorism by the Nashi, a pro-Kremlin group, it was described as the world’s first “war in cyberspace”. Their tactics included ping floods and botnets to penetrate and take down key government websites. By sending huge amounts of information to the targeted sites simultaneously, the sites overloaded and froze.

To prevent further attacks, Estonia closed off parts of its network to users outside of the country, isolating itself from the rest of the internet. Estonia’s Hansabank reported a loss of $1m because of the attacks.

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