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62:'s Security Technology Response group, and more than 166,000 according to a Vietnamese computer security researcher who analyzed the log files of the two servers the attackers controlled. An investigation revealed that at least 39 websites were targets in the attacks based on files stored on compromised systems.
267:
South Korean police analyzed a sample of the thousands of computers used by the botnet, stating that there is "various evidence" of the involvement of North Korea or "pro-North elements," but said they may not find the culprit. Intelligence officials with the South Korean government warned lawmakers
218:
Later, it was discovered that the malicious code responsible for causing the attack, Trojan.Dozer and its accompanying dropper W32.Dozer, was programmed to destroy data on infected computers and prevent the computers from being rebooted. It is unclear if this mechanism was ever activated. Security
243:
According to the South Korean
National Intelligence Service, the source of the attacks was tracked down and the government activated an emergency cyber-terror response team who blocked access to five host sites containing the malicious code and 86 websites that downloaded the code, located in 16
210:
Despite the fact that the attacks targeted major public and private sector websites, the South Korean
Presidential office suggested that the attacks were conducted with the purpose of causing disruption, rather than stealing data. However, Jose Nazario, manager of a U.S. network security firm,
278:
Various security experts have questioned the narrative that the attack originated in North Korea. One analyst thinks that the attacks likely came from the United
Kingdom, while technology analyst Rob Enderle hypothesizes that "overactive students" may be to blame. Joe Stewart of SecureWorks
223:
worm to spread infections between computers. Experts further shared that the malware used in the attack "used no sophisticated techniques to evade detection by anti-virus software and doesn't appear to have been written by someone experienced in coding malware."
259:
The timing of the attack led some analysts to be suspicious of North Korea. The attack started on July 4, 2009, the same day as a North Korean short-range ballistic missile launch, and also occurred less than one month after the passage of
227:
It was expected that the economic costs associated with websites being down would be large, as the disruption had prevented people from carrying out transactions, purchasing items or conducting business.
143:
50:—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
290:, the organization found a link between the attacks and North Korea via an IP address that the North Korean Ministry of Post and Telecommunications allegedly " using on rent (from China)."
202:
spokesperson Amy Kudwa said that the department was aware of the attacks and that it had issued a notice to U.S. federal departments and agencies to take steps to mitigate attacks.
65:
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
198:
said: "I'm just going to speak about our website, the state government website. There's not a high volume of attacks. But we're still concerned about it. They are continuing."
54:
attack. Most of the hijacked computers were located in South Korea. The estimated number of the hijacked computers varies widely; around 20,000 according to the South Korean
170:
infections, malware used in part of the attack. Some of the companies used in the attack were partially owned by several governments, further complicating attribution.
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55:
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240:, were unsophisticated. Given the prolonged nature of the attacks, they are being recognized as a more coordinated and organized series of attacks.
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of data per second, not enough to cause major disruptions. That being said, web sites reported service disruptions for days following the attack.
540:
264:, which imposed further economic and commercial sanctions on North Korea in response to an underground nuclear test conducted earlier that year.
816:
851:
606:
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77:. This attack is considered by some to be the beginning of a series of DDoS attacks carried about by Lazarus dubbed "Operation Troy."
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275:' Counter Threat Unit, noted that the data generated by the attacking program appeared to be based on a Korean-language browser.
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91:
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715:
134:
The second wave of attacks occurred on July 7, 2009, affecting South Korea. Among the websites targeted were the presidential
324:
69:, although these suggestions have not been substantiated. Researchers would later find links between these cyberattacks, the
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933:
770:
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speculated that attention-seeking behavior drove the attack, though he notes that the breadth of the attack was "unusual."
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that a "North Korean military research institute had been ordered to destroy the South's communications networks."
236:
It is not known who is behind the attacks. Reports indicate that the type of attacks being used, commonly known as
186:
A third wave of attacks began on July 9, 2009, targeting several websites in South Korea, including the country's
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287:
286:, named North Korea as the perpetrator of the attack. According to head of the NIS
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said on July 9 that its website also came under attack. State
Department spokesman
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35:
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39:
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478:"Cyberattacks Jam Government and Commercial Web Sites in U.S. and South Korea"
319:
135:
648:
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1659:
420:
245:
1685:
1612:
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1202:
637:"The Sony Hackers Were Causing Mayhem Years Before They Hit the Company"
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348:
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1504:
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817:"S Korea's presidential office says no damage done from hacker attacks"
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as well as one of its largest banks and a major news agency. The
1467:
417:"Botnet worm in DOS attacks could wipe data out on infected PCs"
51:
38:
against major government, news media, and financial websites in
27:
Series of cyberattacks against South Korea and the United States
971:
177:
Visualization of 2009 cyber warfare attacks against South Korea
450:"UK, not North Korea, source of DDOS attacks, researcher says"
211:
claimed that the attack is estimated to have produced only 23
884:"Cyberattacks against US, S. Korea signal anger – not danger"
741:"28c3: Security Log Visualization with a Correlation Engine"
166:
companies unwittingly helped attack South Korea due to a
955:"N. Korean ministry behind July cyberattacks: spy chief"
600:
598:
795:"US State Department under cyberattack for fourth day"
716:"Cyber Attacks Hit Government and Commercial Websites"
512:"Lazy Hacker and Little Worm Set Off Cyberwar Frenzy"
73:
attacks in 2013, and other attacks attributed to the
90:
The first wave of attacks occurred on July 4, 2009 (
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767:"Official: S. Korea web sites under renewed attack"
578:"Korean, US Web sites hit by suspected cyberattack"
282:On October 30, 2009, South Korea's spy agency, the
219:experts said that the attack re-used code from the
930:"S. Korea analyzes computers used in cyberattacks"
102:. Among the websites affected were those of the
382:"Cyber Attack Code Starts Killing Infected PCs"
769:. Associated Press. 2009-07-09. Archived from
541:"Pyongyang blamed as cyberattack hits S Korea"
144:Ministry of Public Administration and Security
983:
92:Independence Day holiday in the United States
8:
46:. The attacks involved the activation of a
1421:
1036:
990:
976:
968:
718:. Foxreno.com. 2009-07-08. Archived from
1069:Sony BMG copy protection rootkit scandal
244:countries, including the United States,
852:"Cyber Attack Hits Korea for Third Day"
340:
256:, but North Korea was not among them.
845:
843:
841:
685:
683:
238:distributed denial-of-service attacks
7:
410:
408:
406:
200:U.S. Department of Homeland Security
262:UN Security Council Resolution 1874
932:. Associated Press. Archived from
670:"Tracing the Lineage of DarkSeoul"
580:. Associated Press. Archived from
452:. IDG News Service. Archived from
25:
691:"Governments hit by cyberattack"
605:McDevitt, Caitlin (2009-07-09).
356:"New 'cyberattacks' hit S Korea"
905:"Cyberattack rocks South Korea"
747:from the original on 2021-12-21
668:Martin, David (March 4, 2016).
448:Williams, Martyn (2009-07-14).
380:Claburn, Thomas (2009-07-10).
325:Comparison of computer viruses
1:
928:Kim, Kwang-Tae (2009-07-12).
576:Kim, Hyung-Jin (2009-07-08).
284:National Intelligence Service
188:National Intelligence Service
148:National Intelligence Service
58:, around 50,000 according to
56:National Intelligence Service
34:were a series of coordinated
1400:Kaminsky DNS cache poisoning
1144:(findings published in 2010)
823:. 2009-07-08. Archived from
801:. 2009-07-10. Archived from
549:. 2009-07-09. Archived from
476:Markoff, John (2009-07-09).
415:Mills, Elinor (2009-07-10).
300:2007 cyberattacks on Estonia
158:presented evidence multiple
882:Arnoldy, Ben (2009-07-09).
271:Joe Stewart, researcher at
1747:
903:Jiyeon, Lee (2009-07-11).
635:Zetter, Kim (2016-02-24).
510:Zetter, Kim (2009-07-08).
254:People's Republic of China
1721:2009 in the United States
1003:
889:Christian Science Monitor
850:Han, Jane (2009-07-09).
330:Denial-of-service attack
1121:US military cyberattack
1111:Cyberattacks on Georgia
1085:Cyberattacks on Estonia
607:"Cyberattack Aftermath"
112:New York Stock Exchange
1731:2000s internet outages
1116:Sarah Palin email hack
178:
154:. Security researcher
94:), targeting both the
32:July 2009 cyberattacks
18:July 2009 cyberattacks
1256:Jeanson James Ancheta
743:. December 29, 2011.
192:U.S. State Department
176:
1090:Operation: Bot Roast
998:Hacking in the 2000s
310:Cyber Storm Exercise
1716:2009 in South Korea
961:. October 30, 2009.
140:Ministry of Defense
81:Timeline of attacks
1053:Operation Firewall
483:The New York Times
179:
1703:
1702:
1699:
1698:
1181:associated events
1157:
1156:
1106:Project Chanology
1027:
1026:
805:on April 9, 2010.
152:National Assembly
16:(Redirected from
1738:
1422:
1273:str0ke (milw0rm)
1142:Operation Aurora
1037:
1006:
1005:
992:
985:
978:
969:
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951:
945:
944:
942:
941:
936:on July 16, 2009
925:
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893:
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873:
872:
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869:
860:. Archived from
847:
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832:
827:on July 13, 2009
813:
807:
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779:
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773:on July 15, 2009
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617:on July 12, 2009
613:. Archived from
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584:on July 11, 2009
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423:. Archived from
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388:. Archived from
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1453:Anna Kournikova
1441:
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1384:Vulnerabilities
1378:
1352:
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1327:Dmitry Sklyarov
1307:Albert Gonzalez
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1639:Black Energy 1
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1394:Shatter attack
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1357:Hacking forums
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1213:PLA Unit 61398
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1137:Operation Troy
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674:SANS Institute
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456:on 2011-06-15.
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315:Moonlight Maze
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305:Cyberterrorism
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164:United Kingdom
160:European Union
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1228:World of Hell
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1038:
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1023: →
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1019:
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1009:←
1008:
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864:on 2009-07-11
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722:on 2009-07-12
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553:on 2014-09-20
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1726:Cyberattacks
1582:Sony rootkit
1348:Bluehell IRC
1317:Dan Kaminsky
1312:Sven Jaschan
949:
938:. Retrieved
934:the original
909:. Retrieved
907:. GlobalPost
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362:. 2009-07-09
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288:Won Sei-hoon
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108:The Pentagon
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36:cyberattacks
31:
29:
1500:SQL Slammer
1322:Samy Kamkar
1243:Individuals
1208:Level Seven
1171:Ac1db1tch3z
1150:(2008–2010)
1049:(2003–2006)
857:Korea Times
751:November 4,
273:SecureWorks
130:Second wave
104:White House
100:South Korea
67:North Korea
40:South Korea
1710:Categories
1387:discovered
1374:darksun.ws
1369:unkn0wn.eu
1277:Lil Hacker
1223:ShadowCrew
1148:WebcamGate
1047:Titan Rain
940:2009-07-12
911:2009-07-11
868:2009-07-09
831:2009-07-09
777:2009-07-09
726:2009-07-09
701:2009-07-09
654:2018-12-14
621:2009-07-09
588:2009-07-09
557:2009-07-09
523:2009-07-09
517:Wired News
489:2009-07-09
431:2009-07-12
396:2009-07-10
366:2009-07-09
336:References
320:Titan Rain
182:Third wave
136:Blue House
86:First wave
1681:Conficker
1660:Agent.btz
1188:Avalanche
1176:Anonymous
1033:Incidents
649:1059-1028
421:CNET News
246:Guatemala
196:Ian Kelly
168:W32.Dozer
71:DarkSeoul
1686:Koobface
1665:Mariposa
1613:Stration
1608:Clickbot
1572:PGPCoder
1520:Graybird
1458:Code Red
1432:ILOVEYOU
1406:sslstrip
1364:ryan1918
1341:Darknets
1332:Stakkato
1270:Digerati
1266:Dshocker
1233:Sandworm
1203:GhostNet
1016:Timeline
745:Archived
695:BBC News
360:BBC News
294:See also
252:and the
213:megabits
150:and the
60:Symantec
42:and the
1691:Waledac
1598:Rustock
1525:Blaster
1505:Welchia
1437:Pikachu
1417:Malware
1287:camZero
611:Reuters
206:Effects
1655:Asprox
1556:Mydoom
1551:Sasser
1546:NetSky
1484:Simile
1408:(2009)
1402:(2008)
1396:(2002)
1302:diabl0
1297:Cyxymu
1292:Coolio
1261:SilenZ
1163:Groups
959:Yonhap
821:Xinhua
647:
221:Mydoom
146:, the
142:, the
138:, the
124:Amazon
122:, and
120:NASDAQ
118:, the
114:, the
110:, the
48:botnet
1629:Storm
1541:Bagle
1515:Gruel
1510:Sobig
1463:Nimda
1251:AKill
1198:0x1fe
1021:2010s
1011:1990s
641:Wired
250:Japan
1674:2009
1648:2008
1634:ZeuS
1622:2007
1603:ZLOB
1591:2006
1577:Samy
1565:2005
1534:2004
1493:2003
1477:2002
1468:Klez
1446:2001
1425:2000
1282:BadB
1193:GNAA
1130:2009
1099:2008
1078:2007
1062:2005
1040:2004
753:2017
645:ISSN
162:and
98:and
52:DDoS
30:The
1218:RBN
799:AFP
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