$20\mathrm{.}0\%$ Complete

What is Open Source Intelligence $($OSINT$)?$

A$.$ Obtaining information, physical access to premises, or even access to a user account through the art of persuasion

B$.$ The means the organization will take to protect the confidentiality, availability, and integrity of sensitive data and resources

C$.$ Using web search tools and social media to obtain information about the target

D$.$ Using software tools to obtain information about a host or network topology