Editing Internet security (section)

===Multi-factor authentication===
{{Main|Multi-factor authentication}}

[[Multi-factor authentication]] (MFA) is an [[access control]] method in which a [[User (computing)|user]] is granted access only after successfully presenting separate pieces of evidence to an [[authentication]] mechanism – two or more from the following categories: knowledge (something they know), possession (something they have), and inference (something they are).<ref>{{Cite web|title = Two-factor authentication: What you need to know (FAQ) – CNET|url = https://www.cnet.com/news/two-factor-authentication-what-you-need-to-know-faq/|website = CNET|access-date = 2015-10-31}}</ref><ref>{{Cite web|url=https://www.iphonebackupextractor.com/blog/extract-data-two-factor-authentication/|title=How to extract data from an iCloud account with two-factor authentication activated|website=iphonebackupextractor.com|access-date=2016-06-08}}</ref> Internet resources, such as websites and email, may be secured using this technique.