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Many websites have contact us form usually requiring sender's name and email address. Now assume someone uses the contact form but fills in an email address (a valid address) which does not belong to them.

What are the standard measures that the website's owner can undertake to prevent/mitigate such impersonation ?

closed as too broad by John Conde Sep 9 at 18:47

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • There's a lot you can do with varying effectiveness and cost. – John Conde Sep 9 at 18:47
  • @JohnConde, any reference or keywords I can use to search for more information ? – Hayk Sep 9 at 19:09