National Security Agency

src: i.ytimg.com The National Security Agency ( NSA ) is a national-level intelligence agency of the United States Department of Defense, u...

Email encryption

src: maxwellit.com Email encryption is encryption of email messages to protect the content from being read by other entities than the inten...

Mailing list

src: i.ytimg.com A mailing list is a collection of names and addresses used by an individual or an organization to send material to multipl...