WannaCry, Petya and EternalBlue

28. The terms ‘WannaCry, Petya and EternalBlue’ sometimes mentioned in the news recently are related to
(a) Exoplanets
(b) Cryptocurrency
(c) Cyber attacks
(d) Mini satellites

Ans: (c) Cyber attacks
Explanation:-
Wannacry, Petya and EternalBlue are relsted to cyber attacks. These are form of Ransonware. 

• WannaCry is a ransomware worm that spread rapidly across a number of computer networks in May of 2017.
• Petya is a family of encrypting ransomware that was first discovered in 2016.
• Eternal Blue is the name given to a software vulnerability in Microsoft's Windows operating system.

Thus, all three are related to cyber security. Hence, option C is the most appropriate.