Cyberattacks on Estonia 2007

A series of cyber attacks began 27 April 2007 that swamped websites of Estonian organizations, including Estonian parliament, banks, ministries, newspapers and broadcasters, amid the country's disagreement with Russia about the relocation of the Bronze Soldier of Tallinn, an elaborate Soviet-era grave marker, as well as war graves in Tallinn. Most of the attacks that had any influence on the general public were distributed denial of service type attacks ranging from single individuals using various methods like ping floods to expensive rentals of botnets usually used for spam distribution. Spamming of bigger news portals commentaries and defacements including that of the Estonian Reform Party website also occurred.

Some observers reckoned that the onslaught on Estonia was of a sophistication not seen before. The case is studied intensively by many countries and military planners as, at the time it occurred, it may have been the second-largest instance of state-sponsored cyberwarfare, following Titan Rain.

As of January 2008, one ethnic-Russian Estonian national has been charged and convicted.

During a panel discussion on cyber warfare, Sergei Markov of the Russian State Duma has stated his unnamed aide was responsible in orchestrating the cyber attacks. Markov alleged the aide acted on his own while residing in an unrecognised republic of the former Soviet Union, possibly Transnistria. On 10 March 2009 Konstantin Goloskokov, a "commissar" of the Kremlin-backed youth group Nashi, has claimed responsibility for the attack. Experts are critical of these varying claims of responsibility.

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