Multi-factor authentication (MFA) is a security process that requires individuals to provide multiple forms of identification before granting access to a system, application, or digital account. The goal is to add an extra layer of security beyond just a username and password. MFA is designed to enhance the protection of sensitive information and reduce the risk of unauthorized access.

The three main factors used in multi-factor authentication are typically:

Something You Know: This is typically a password or a PIN (Personal Identification Number). It's information that the user is expected to know.

Something You Have: This involves a physical device or token that the user possesses, such as a smartphone, security token, or smart card.

Something You Are: This refers to biometric data, such as fingerprints, retina scans, voice recognition, or facial recognition.

Meta tags are HTML elements that provide information about a web page to search engines and website visitors. These tags are placed in the head section of an HTML document and are not visible on the actual webpage. Meta tags play a crucial role in helping search engines understand the content and context of a web page, which can impact the page's search engine ranking and display in search results.

Here are some common types of meta tags:

Title Tag: Specifies the title of the web page, which is displayed on the browser's title bar or tab. It is also a crucial factor for search engine optimization (SEO).

Meta Description: Provides a brief summary of the page's content. Search engines may use this description in search results.

Meta Keywords: Historically used to specify keywords relevant to the page's content, but search engines now generally ignore this tag.

It's important to note that while meta tags are important for SEO, search engines use a variety of factors to determine a page's ranking, and content quality and relevance play a significant role.