Chinese hackers used a phishing email to breach a contractor for the US Office of Personnel Management, which exposed the records of 21 million civil service employees. This is an example of .

Cyber Spying or Cyberespionage

Explanation:

Cyber spying or espionage involves the use of computer to gain illegal access to confidential information not available to the public usually held by governments or big corporations through internet networks. It is a for of cyber attack whereby the attack steals confidential information. It involves intelligence gathering through illegal means.

It occurs when a "hacker" gains unauthorized access into a private system usually by deploying viruses that secretly collects or destroys information. In this case, the Chinese hackers used phishing email to breach and gain unauthorized access.

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