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What is Phishing?

While working, Mrs Sharma's system stopped functioning suddenly. After her system got repaired, she tried to log in to her e-mail account but could not do so. There was an error of incorrect user name or password.

a. What might be the reason for this?

b. How do you think her password might be altered, if at all?

c. What precautions she should have taken to protect her login details?

Nimmi is planning to spend her vacations abroad and surfed the internet to get details about some of the places. Now she keeps getting e-mails from various unknown sources regarding travel, tourism, hotel booking, etc. What could have been the reason for this and how can she prevent it?