An attempt to obtain sensitive information such as username, password and credit card details etc. for malicious reasons, by posing as a trustworthy source in e-mail is called as

The correct answer is Phishing.

Key Points 

• Phishing is the attempt to acquire sensitive information such as usernames, passwords, and credit card details (and sometimes, indirectly, money), often for malicious reasons, by masquerading as a trustworthy entity in an electronic communication.
• The first recorded use of the term "phishing" was in the cracking toolkit AOHell created by Koceilah Rekouche in 1995.
• Types of phishing:
  • Email phishing
  • Spear pishing
  • Whaling and CEO Fraud
  • Clone phishing
  • Voice phishing
  • SMS phishing
  • Calendar phishing
  • Page hijacking.