The correct option is (c).
Explanation
The terms mentioned refer to specific instances of malicious software (malware) and software vulnerabilities that caused significant global disruptions in the cybersecurity landscape.
Detailed Analysis:
- WannaCry: A ransomware cryptoworm that targeted computers running the Microsoft Windows operating system in May 2017. It encrypted user data and demanded ransom payments in Bitcoin.
- Petya: A family of encrypting ransomware first discovered in 2016. A variant, often referred to as NotPetya, caused massive global damage in 2017 by encrypting the master boot record of infected systems, rendering them unusable.
- EternalBlue: A software exploit developed by the U.S. National Security Agency (NSA). It targeted a vulnerability in Microsoft's Server Message Block (SMB) protocol. This exploit was leaked by a hacker group and subsequently used to propagate the WannaCry and Petya cyberattacks.
Key Takeaway: WannaCry and Petya are major ransomware attacks, while EternalBlue is the exploit used to facilitate their spread; all are directly related to cyber attacks.