Series of cyberattacks against South Korea and the United States
The July 2009 cyberattacks were a series of coordinated cyberattacks against major government, news media, and financial websites in South Korea and the United States.[1] The attacks involved the activation of a botnet—a large number of hijacked computers—that maliciously accessed targeted websites with the intention of causing their servers to overload due to the influx of traffic, known as a DDoS attack.[1] Most of the hijacked computers were located in South Korea.[2] The estimated number of the hijacked computers varies widely; around 20,000 according to the South Korean National Intelligence Service, around 50,000 according to Symantec's Security Technology Response group,[3] and more than 166,000 according to a Vietnamese computer security researcher who analyzed the log files of the two servers the attackers controlled.[4] An investigation revealed that at least 39 websites were targets in the attacks based on files stored on compromised systems.[5][6]
The targeting and timing of the attacks—which started the same day as a North Korean short-range ballistic missile test—have led to suggestions that they may be from North Korea, although these suggestions have not been substantiated.[7][8][9] Researchers would later find links between these cyberattacks, the DarkSeoul attacks in 2013, and other attacks attributed to the Lazarus Group.[10] This attack is considered by some to be the beginning of a series of DDoS attacks carried about by Lazarus dubbed "Operation Troy."[11]
^ ab"New 'cyberattacks' hit S Korea". BBC News. 2009-07-09. Retrieved 2009-07-09.
^Claburn, Thomas (2009-07-10). "Cyber Attack Code Starts Killing Infected PCs". InformationWeek. Archived from the original on 2009-07-13. Retrieved 2009-07-10.
^Mills, Elinor (2009-07-10). "Botnet worm in DOS attacks could wipe data out on infected PCs". CNET News. Archived from the original on 2009-07-29. Retrieved 2009-07-12.
^Williams, Martyn (2009-07-14). "UK, not North Korea, source of DDOS attacks, researcher says". IDG News Service. Archived from the original on 2011-06-15.
^Markoff, John (2009-07-09). "Cyberattacks Jam Government and Commercial Web Sites in U.S. and South Korea". The New York Times. Retrieved 2009-07-09.
^Cite error: The named reference Lazy Hacker and Little Worm Set Off Cyberwar Frenzy was invoked but never defined (see the help page).
^"Pyongyang blamed as cyberattack hits S Korea". Financial Times. 2009-07-09. Archived from the original on 2014-09-20. Retrieved 2009-07-09.
^Kim, Hyung-Jin (2009-07-08). "Korean, US Web sites hit by suspected cyberattack". Associated Press. Archived from the original on July 11, 2009. Retrieved 2009-07-09.
^McDevitt, Caitlin (2009-07-09). "Cyberattack Aftermath". Reuters. Archived from the original on July 12, 2009. Retrieved 2009-07-09.
^Zetter, Kim (2016-02-24). "The Sony Hackers Were Causing Mayhem Years Before They Hit the Company". Wired. ISSN 1059-1028. Retrieved 2018-12-14.
^Martin, David (March 4, 2016). "Tracing the Lineage of DarkSeoul". SANS Institute.
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