1. 1988 – Morris Worm

- One of the first internet worms that caused widespread disruption.
- It was created by Robert Tappan Morris and spread via Unix systems, exploiting vulnerabilities in Unix services.
- It infected about 10% of the Internet (around 6,000 computers), causing massive slowdowns and outages.

2. 2000 – DDoS Attacks on Major Websites

- A 15-year-old hacker, known as "Mafiaboy,"launched Distributed Denial of Service (DDoS) attacks against major websites like Yahoo!, eBay, and Amazon.
- The attacks caused millions of dollars in damages and highlighted the vulnerability of the Internet to coordinated attacks.

3. 2007 – Estonia Cyber Attack

- A series of cyberattacks targeted Estonia, disrupting government, banking, and media websites.
- It was one of the first cases of a nation-state attack, possibly linked to political tensions with Russia.
- This event is often cited as the first case of cyber warfare.

4. 2010 – Stuxnet

- A highly sophisticated worm believed to be developed by the U.S. and Israel to target Iran's nuclear program.
- It was the first known cyberweapon aimed at physical infrastructure, damaging centrifuges at the Natanz facility.
- This attack marked the beginning of cyber-physical warfare.

5. 2013 – Yahoo Data Breach

- One of the largest data breaches in history, affecting 3 billion user accounts.
- Hackers accessed user information, including emails, passwords, and personal data.
- This breach led to significant changes in how companies manage data security.

6. 2017 – WannaCry Ransomware Attack

- A global ransomware attack that exploited a vulnerability in Microsoft Windows (EternalBlue).
- It affected more than 200,000 computers in 150 countries, encrypting data and demanding Bitcoin ransom.
- The attack heavily impacted healthcare services, including the UK's National Health Service (NHS).

7. 2020 – SolarWinds Attack

- A supply chain attack that compromised the SolarWinds Orion software, used by many large companies and government agencies.
- Hackers injected malicious code into updates, gaining access to sensitive systems.
- It is considered one of the most significant and sophisticated cyber espionage campaigns.

8. 2021 – Colonial Pipeline Ransomware Attack

- A ransomware attack targeted the Colonial Pipeline, disrupting fuel supply in the U.S.
- The attackers, identified as the DarkSide group, demanded a ransom paid in Bitcoin.
- This attack highlighted the vulnerability of critical infrastructure to cyber threats
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9. 2023 – MOVEit File Transfer Attack

- A vulnerability in the MOVEit file transfer software was exploited by the **Cl0p ransomware group**.
- The attack targeted many organizations, exposing sensitive data.
- It showed the ongoing risk posed by software supply chain vulnerabilities.

Trends in Network Attacks:

- Increased Ransomware Incidents: Attackers frequently demand cryptocurrency payments.
- Supply Chain Attacks: Compromising software used by many organizations has become a favored tactic.
- Nation-State Actors: Many high-profile attacks are linked to government-backed hackers.
- Cyber-Physical Attacks: Growing concerns about attacks targeting physical infrastructure (e.g., power grids, hospitals).