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Cobalt
https://www.cobalt.io/blog/biggest-cybersecurity-attacks-in-history
11 Biggest Cyberattacks in History | Cobalt
Date: 2023 Impact: 1.5 Billion Records In 2023, the Real Estate Wealth Network experienced a catastrophic data breach that exposed a staggering 1.5 billion records. The compromised data included … See more
Moveit Transfer Data Breach
Date: 2023 Impact: 94 million users, >2.5k businesses and >10 billion in damages and growing. In 2023, the MOVEit Transfer software, widely used for secure file transfers, b… See more
Cobalt
Log4j Vulnerability
Date: 2021 Impact:100s of Millions of Devices This zero-day exploit took the security industry by storm in late 2021 and before an official CVE identifier could be assigned, i… See more
Cobalt
Colonial Pipeline Ransomware Attack
Date: 2021 Impact: Largest attack on infrastructure in the United States In 2021, an oil pipeline system was attacked, leading to the largest attack on oil infrastructu… See more
Cobalt
Yahoo Hacks
Date: 2013 & 2014 Impact:3 billion accounts Through two attacks, Yahoo suffered the largest data breaches ever in 2013 and 2014. Although not reported until 2016, it became kn… See more
Cobalt
What are the most dangerous cyberattacks?
Cyberattacks are an ever-present risk to both businesses and their customers. These are the most damaging cyberattacks currently known. Encryption your data. Binary code and digital Lock. Hacker attack and data breach. Big data with encrypted computer code. Safe your data. Cyber internet security and privacy concept.
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Table of Contents
Moveit Transfer Data Breach
Log4j Vulnerability
Colonial Pipeline Ransomware Attack
Yahoo Hacks
What are the most dangerous cyberattacks?

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Some of the most successful cyberattacks in history include¹ ²:
RockYou2021: The biggest password leak yet, with 8.4 billion passwords leaked.
Cyberattack on Yahoo (2014).
Cyberattack on Marriott Hotels (2014).
Sony’s PlayStation Network attack (2011).
Uber data breach (2016).
Adobe cyberattack (2013).
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This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.
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The biggest cyberattacks in history - Tech Monitor
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History of Cyber Warfare and the Top 5 Most Notorious Attacks
fortinet.com
The six biggest cyberattacks in history
1. RockYou2021: The biggest password leak yet – 2021 The largest stolen password collection of all time saw 8.4 billion passwords leaked. ...
2. Cyberattack on Yahoo – 2014 ...
3. Cyberattack on Marriott Hotels – 2014 ...
The biggest cyberattacks in history - Tec…
techmonitor.ai/technology/biggest-cyberattacks-in-…
The Most Notorious Cyberattacks in History
Robert Tappan Morris—The Morris Worm (1988)
Google China Attack (2009)
A Teenager Hacks the US Defense Department and NASA (1999)
History of Cyber Warfare and the Top 5 …
www.fortinet.com/resources/cyberglossary/most-no…
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How often do cyberattacks happen?
Cyberattacks happen every day — in fact every 39 seconds there is a cyberattack. Regardless of the hacker’s motivation, financial or political, this frequency of cybercrime has extensive implications.
11 Biggest Cyberattacks in History | Cobalt
cobalt.io
Which country has the most cyber attacks?
The U.S. comes in first place, with 156 recorded cyber attacks. That’s an average of 11 significant attacks per year, which is more than Russia’s had in 14 years. What are the Most Common Types? While there are many different types of cyber attacks, Specops highlights the four most commonly used for significant cyber crimes:
The Most Significant Cyber Attacks from 2006-2020, by Country
visualcapitalist.com
What are the most dangerous cyberattacks?
Cyberattacks are an ever-present risk to both businesses and their customers. These are the most damaging cyberattacks currently known. Encryption your data. Binary code and digital Lock. Hacker attack and data breach. Big data with encrypted computer code. Safe your data. Cyber internet security and privacy concept.
The biggest cyberattacks in history - Tech Monitor
techmonitor.ai
Are cyber attacks a strategic advantage?
Although hacking started out as localized, relatively modest attacks on certain individuals or systems, as profiteers, organized cyber crime conglomerates, and nation-states have noticed the unique strategic advantage cyberattacks create, more and more notorious attacks have been happening.
History of Cyber Warfare and the Top 5 Most Notorious Attacks
fortinet.com
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History Hit
https://www.historyhit.com/the-bigg
The Biggest Cyberattacks in History
- Cyberattacks on Estonia (2007) Hybrid warfare has become a widely used term in recent …
  SolarWinds cyberattack (2020) A cyberattack on an unprecedented scale, the Sunburst …
  Ukraine power grid attack (2015) This cyberattack on the Ukrainian power grid gave the …
  NotPetya malware attack (2017) Two years after the Ukraine power grid attack, Sandworm …
  WannaCry ransomware attack (2017) Carried out in the same year as NotPetya, the …
  See full list on historyhit.com
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Cyberattack 70 Million
Cyberattacks in History
Major Cyberattacks
CSIS
https://www.csis.org/.../significant-cyber-in…
Significant Cyber Incidents | Strategic Technologies …
WEBThis timeline records significant cyber incidents since 2006, focusing on cyber attacks on government agencies, defense and high tech companies, or economic crimes with losses of more than a million dollars.
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Cyber Security Attacks
Cyber Threats Incidents 2022
Major Cyber Attacks On Usa
infosecurityeurope.com
https://www.infosecurityeurope.com/en-gb/blog/...
The Top 10 Biggest Cyber-Attacks and Their Impact - Infosecurity …
- Ukraine Power Grid Attacks. In December 2015, during the heart of winter, …
  WannaCry. The notorious WannaCry ransomware attack that occurred in …
  Travelex Forced into Administration. Foreign exchange firm Travelex was …
  A Recorded Fatality. A tragic case still making its way through the courts in …
  United Health Services Attack. The Fortune 500 healthcare organization was …
  See full list on infosecurityeurope.com
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Cyber-attack
Top 10
Fortinet
https://www.fortinet.com/resources/cyberglossary/...
History of Cyber Warfare and the Top 5 Most Notorious Attacks
WEBCyber warfare weaponizes hacking skills to either launch attacks or prevents them from happening. Learn about the history of cyber warfare and the most notorious attacks …
What is the biggest cyberattack in history?
The biggest cyberattack in history was arguably the Jonathan James attack on NASA and the U.S. Department of Defense in 1999, especially due to the...
What is the most famous cyberattack?
The most famous cyberattack is the Google China hack in 2009.
Where did cyber warfare originate?
Cyber warfare may have originated in the United States when Americans supposedly took out Iranian nuclear facilities.
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Network Security
Cyber Warfare History
Famous Cyber Warfare Attack
Videos of Most Successful Cyber Attacks

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Top 10 Cyber Attacks In History | Biggest Cyber Attacks Of All Time | Cyber Security | Simplilearn
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8 Most Common Cybersecurity Threats | Types of Cyber Attacks | Cybersecurity for Beginners | Edureka
507.6K viewsJul 18, 2018
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Types of Cyber Attacks You Should Be Aware of in 2024
Dec 1, 2020
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The Most Common and Successful Cyber Attack Methods and How to Manage Organizational Risk
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The 5 Biggest Cyber Attacks in History - Cyber Security Resource
4.9K viewsJun 11, 2021
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Tech Monitor
https://techmonitor.ai/technology/biggest-c…
The biggest cyberattacks in history - Tech Monitor
WEBJul 27, 2022 · The six biggest cyberattacks in history. Cyberattacks are an ever-present risk to both businesses and their customers. These are the most damaging cyberattacks currently known. Silvia Pellegrino July 27, …
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Cyberattack 70 Million
Cyberattacks in History
Expert Insights
https://expertinsights.com/insights/10-high-profile-attacks-2021
The Top 10 Biggest Cyber Attacks Of 2021 | Expert Insights
WEBMar 28, 2023 · The Top 10 Biggest Cyber Attacks Of 2021 . A throwback on some of the most high profile cyberattacks of 2021, how they were remediated, and what could …
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Computer Hacking
Biggest Cyber Attacks
Top 10
Biggest Cyberattacks
EM360 Tech
https://em360tech.com/top-10/top-10-mos…
Top 10 Biggest Cyber Attacks in History - EM360 Tech
WEBJun 27, 2024 · While some only cause short-term problems and outages, other, bigger cyber attacks can be devastating – leaving companies with their reputation in tatters and a massive hole in their wallet. In this list, …
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Biggest Cyber Attacks
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Oakland Technical High School
Stanford Online
https://online.stanford.edu/big-breaches-w…
Big Breaches: What we learned from some of the …
WEBDr. Neil Daswani covers some of the world’s most disruptive security breaches and how to prevent their root causes, including effective countermeasures for phishing, malware, software vulnerabilities, …
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World
Stanford University
MIT Technology Review
https://www.technologyreview.com/2015/08/25/166426/...
The 20 Most Infamous Cyberattacks of the 21st Century (Part I)
WEBAug 25, 2015 · In a two-part post, here are 20 of the most infamous attacks his paper discusses. 20. April 2001: A US Navy EP-3E spy plane collides with a Chinese J-811 …
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21st century
Motionless In White
Visual Capitalist
https://www.visualcapitalist.com/cyber-atta…
The Most Significant Cyber Attacks from 2006-2020, …
WEBMay 10, 2021 · From 2006 to 2020, the U.S. experienced 156 significant cyber attacks—more than the UK, India, and Germany combined; A “significant” cyber attack refers to a hack into a country’s government …
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Cyber-attack
Cyber Attackers By Country
Major Cyber Attacks Recently
TechTarget
https://www.techtarget.com/searchsecurity/news/...
10 of the biggest cyber attacks of 2020 - TechTarget
WEBJan 5, 2021 · The list of top cyber attacks from 2020 include ransomware, phishing, data leaks, breaches and a devastating supply chain attack with a scope like no other. The …
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Network Security
Biggest Cyber Attacks
List of Recent Cyber Attacks
ZDNET
https://www.zdnet.com/article/a-decade-of-hacking...
A decade of hacking: The most notable cyber-security events of …
WEBDec 12, 2019 · ZDNet takes a look over the most important data breaches, cyber-attacks, and malware strains of the last decade.
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Computer Hacking
Catalin Cimpanu
Los Angeles Times
https://www.latimes.com/world-nation/story/2020-12...
The most consequential cyber-attack in history just happened.
WEBDec 23, 2020 · The massive hack of government networks that came to light this month is “probably the most consequential cyber-espionage campaign in history,” an industry …
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Cyber-attack
World
Cloudflare
https://www.cloudflare.com/learning/ddos/famous-ddos-attacks
Famous DDoS attacks | Biggest DDoS attacks | Cloudflare
WEBDescribe the magnitude of the most powerful DDoS attacks; Understand the motives behind some of the most infamous cyber attacks; Explain some of the most important …
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Computer Hacking
Network Security
Cyber Attacks
TechTarget
https://www.techtarget.com/searchSecurity/tip/The-biggest-ransomwar…
The 10 biggest ransomware attacks in history - TechTarget
WEBFast-forward a few years to see the evolution of ransomware, enabled by the rise of the internet, society's shift to an interconnected digital world and the introduction of …
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Ransomware
TechTarget
ISACA
https://www.isaca.org/resources/news-and-trends/...
Top Cyberattacks of 2022: Lessons Learned - ISACA
WEBDec 21, 2022 · 2022 saw most organizations continuing to scale up their investments in cybersecurity as awareness grew that skimping on infosec was not a wise or viable …
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Computer Hacking
Network Security
Cyberattack 70 Million
CRN
https://www.crn.com/news/security/2024/10-major...
10 Major Cyberattacks And Data Breaches In 2024 (So Far) - CRN
WEBJul 1, 2024 · Cyberattacks and data breaches during the first half of 2024 have included the ransomware attacks against Change Healthcare and CDK, as well as data theft and …
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Ransomware
Major Cyberattacks
BCS, The Chartered Institute for IT
https://www.bcs.org/articles-opinion-and-research/...
The biggest cyber attacks of 2023 - BCS
WEBNov 3, 2023 · High-profile ransomware attacks dominated 2022’s headlines. Patrick O'Connor explores 2023’s biggest cyber attacks and lessons we can all learn.
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Network Security
Cyber-attack
Biggest Cyber Attacks
WIRED
https://www.wired.com/story/worst-hacks-breaches-2022
The Worst Hacks and Breaches of 2022 So Far | WIRED
WEBIn one of the most disruptive ransomware attacks to date, Russia-linked cybercrime gang Conti brought Costa Rica to a screeching halt in April—and the disruptions would last for …
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Computer Hacking
2022 Cyber Attack Data Breach Hack
Biggest Hack 2022
Norton
https://us.norton.com/blog/emerging-threats/cybersecurity-statistics
115 cybersecurity statistics + trends to know in 2024 - Norton™
WEB13. A successful Russian ransomware attack on JBS, renowned as the world’s largest meatpacking company, affected nearly 10,000 workers in June 2021 and caused an …
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Ransomware
Cyber Attack
Fortinet
https://www.fortinet.com/resources/cyberglossary/types-of-cyber-attacks
Top 20 Most Common Types Of Cyber Attacks | Fortinet
WEBA cyber attack refers to an action designed to target a computer or any element of a computerized information system to change, destroy, or steal data, as well as exploit or …
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List of Recent Cyber Attacks
Data
Arctic Wolf
https://arcticwolf.com/resources/blog/top-five-cyberattack-vectors
Biggest Cyber Attack Vectors - Arctic Wolf
WEBThe sheer volume of cyber attacks — ransomware, business email compromise (BEC), and others — has steadily ticked up year after year. ... If credentials are used by a threat …
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Ransomware
Cyber Attacks
Business Wire
https://www.businesswire.com/news/home...
DDoS Attacks Skyrocket and Hacktivist Activity Surges …
WEB4 days ago · For real-time DDoS attack stats, map, and insights, visit NETSCOUT Cyber Threat Horizon. About NETSCOUT NETSCOUT SYSTEMS, INC. (NASDAQ: NTCT) …
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Cyber Attack
Business Wire
DDoS Attacks
Verizon
https://www.verizon.com/business/en-gb/resources/reports/dbir
2024 Data Breach Investigations Report - Verizon
WEBJoin the DBIR authors as they discuss real-world cybercrime and how cyber attacks affect organizations of all sizes across the globe. Watch now. 2024 DBIR: Apply the Findings. …
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Verizon Communications
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Worst Cyberattacks in History
Why are Chinese cyberattacks a big problem?Why it's noteworthy: The 2014 indictment of five Chinese military hackers for cyberattacks against U.S. companies was an example of what U.S. officials have described as a massive problem: Chinese theft of intellectual property from American companies.
These Are The Worst Cyberattacks Ever - Bloomberg.com
www.bloomberg.com/graphics/corporate-hacks-cyber
What is the worst breach of military computers in history?The worst breach of U.S. military computers in history begins in 2008, in a parking lot at a U.S. military installation in the Middle East. A flash drive infected with a virus called “agent.btz” was inserted into a DoD computer network and quickly spread throughout the U.S. military’s classified and unclassified networks.
The worst cyber attack in DoD history came from a USB
www.wearethemighty.com/mighty-history/worst-cyber
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15 infamous malware attacks: The first and the worst
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The Worst Cases Of Cyber Attacks In History - WorldAtlas
https://www.worldatlas.com/articles/the-worst-cases-of-cyber-attacks-in-history.html
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Worst Cyberattacks in History