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Abstract
Internet has become the main commodity to people and also the governments which made many day to day activities, important transactions, maintaining records etc. easy. With the increase in usage of internet, there has also been increase in attempts to steal information from internet. Many governments around the world depend on internet to maintain their infrastructure and conduct business. With increase in sophisticated attacks there has been many attacks where important information is stolen and sold in black market for money. One such case is cyber-attack on Estonia which has toppled the country. Russian supported pro hackers have done this deed and have proved that war can also be instigated through internet. The attack was carried on for 3 weeks using DDOS attacks. But there were no official investigations into this attack which helped the perpetrators to escape. This attack has given an important lesson to the world and many countries have developed their own cyber-attack defense programs.
Keywords: Internet, cyber-attack, Estonia
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