The top 10 cyberattacks

Here are the top 10 largest cyberattacks, based on the scale of the attack and the damage caused:

  1. WannaCry ransomware attack: This attack, which occurred in May 2017, affected more than 200,000 computers in 150 countries, encrypting users’ data and demanding ransom payments in exchange for the decryption key. The attack impacted hospitals, banks, and other critical infrastructure.
  2. NotPetya ransomware attack: This attack, which occurred in June 2017, affected thousands of organizations worldwide, including government agencies, banks, and major multinational companies. It caused billions of dollars in damage and disrupted critical services.
  3. Equifax data breach: In 2017, the credit reporting agency suffered a data breach that exposed the personal information of 143 million people, including their names, social security numbers, and driver’s license numbers. The breach had significant consequences for those affected, including the risk of identity theft.
  4. Marriott data breach: In 2018, Marriott International announced that hackers had accessed the reservation system of its subsidiary, Starwood Hotels & Resorts, and had stolen the personal data of up to 500 million guests. The data included names, mailing addresses, phone numbers, email addresses, passport numbers, and dates of birth.
  5. Capital One data breach: In 2019, a hacker accessed the personal information of more than 100 million Capital One credit card customers and applicants, including names, addresses, credit scores, and transaction data. The breach resulted in a fine for the company and sparked concerns about the security of cloud-based data storage systems.
  6. SolarWinds supply chain attack: In 2020, it was discovered that hackers had inserted malicious code into updates of the SolarWinds network management software, which was used by government agencies and major corporations. The attack was highly sophisticated and allowed the hackers to access sensitive data and systems for an extended period of time before it was detected.
  7. Cyber espionage campaign against US government agencies: In 2020, it was revealed that hackers believed to be working on behalf of the Russian government had successfully breached several US government agencies, including the Department of Homeland Security, the Treasury, and the Commerce Department. The attack was discovered to have started in March 2020 and was ongoing at the time it was disclosed.
  8. Blackbaud data breach: In 2020, the company, which provides cloud-based software for nonprofit organizations, announced that it had suffered a data breach that exposed the personal information of millions of individuals. The breach included names, addresses, and in some cases, social security numbers and financial data.
  9. Twitter hack: In July 2020, a group of hackers took control of the Twitter accounts of high-profile individuals and organizations, including Barack Obama, Joe Biden, and Elon Musk, and used them to promote a Bitcoin scam. The hack was carried out by compromising the accounts of Twitter employees who had access to the company’s internal systems.
  10. Exchange Server vulnerabilities: In March 2021, it was discovered that hackers had exploited vulnerabilities in the Microsoft Exchange Server email software to gain access to the emails and networks of thousands of organizations worldwide. The attack was believed to have been carried out by a group working on behalf of the Chinese government.
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