2FA é uma técnica de segurança que acrescenta uma segunda camada de proteção à autenticação em um ambiente digital, como e-mail e contas (de banco ou e-commerces, por exemplo)

Camadas de proteção podem ser classificadas de acordo com o que o usuário "tem", "sabe" ou até mesmo "é". Veja os exemplos a seguir:

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Algo que o usuário sabe: uma senha (preferencialmente não-óbvia), um PIN com números ou até mesmo a resposta para uma pergunta secreta

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Algo que o usuário tem: o acesso a um dispositivo móvel ou a uma conta de e-mail (a partir de um token único), um dispositivo validador USB, um app gerador de tokens etc.

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Algo que o usuário é: características biométricas, validadas a partir de selfies (com ou sem prova de vida), impressão digital ou reconhecimento de voz

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O 2FA tem se tornado uma ferramenta importante para criação de contas, acesso a áreas logadas ou validação de transferências (inclusive financeiras), no intuito de reduzir fraudes

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Para entender ainda mais sobre o que é 2FA e como esta prática alavanca negócios digitais, confira o artigo exclusivo que preparamos em nosso blog.

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