Which of the following information gathering techniques collects information from an organization’s web-based calendar and email services?

Which of the following information gathering techniques collects information from an
organization’s web-based calendar and email services?

A.
Anonymous Information Gathering

B.
Private Information Gathering

C.
Passive Information Gathering

D.
Active Information Gathering

Explanation:

Reference:
http://luizfirmino.blogspot.com/2011/09/footprinting-terminologies.html