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DUO offers dual authentication (“dual auth”) for your users. This could be a user to your site, or even internal users utilizing something like a VPN or SAML. Verizon’s Data Breach Investigations Report (DBIR) found that 95 percent of breaches involve the exploitation of stolen credentials. Once credentials are stolen, a nefarious user could have access to private and personal information, not just yours, but of the company.
Dual authentication is recommended whenever you have to log into a service that is going to have corporate information, financial information, storage content, etc. The purpose of dual auth is to make it more difficult for someone to steal your login, and thus impersonate you. Using this feature can can protect you and your business against remote attacks such as phishing, credential exploitation and other attempts to takeover your accounts.
Instead of taking the time and effort to create your own form of dual auth, utilizing a partner like DUO who specializes in this can free up your developers to work on projects closer related to your business.
You can get more information about DUO at their website.