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Seu domínio está enviando e-mails de phishing – mesmo que você não saiba disso

"Phishing attack targets Google Classroom users at scale. Learn how cybercriminals exploit educational platforms and how DMARC and email authentication can prevent such threats."

Ataque de phishing em larga escala: Google Classroom

Find out what defines a bulk email sender and whether your organization qualifies. Learn the criteria, risks, and best practices for compliant high-volume email sending.

Quem é um remetente de e-mails em massa? Você é classificado como um?

"Understand the NIST Cybersecurity Framework and how DMARC aligns with it to enhance email security, protect against cyber threats, and support regulatory compliance."

O que é o NIST Cybersecurity Framework? O Guia Definitivo sobre DMARC

Explore the history of DMARC, from its creation to widespread adoption, and understand how it has evolved to combat phishing and improve email security worldwide.

A História do DMARC

Illustration representing Shadow IT with unauthorized devices and apps connected to a corporate network, highlighting cybersecurity risks and prevention strategies.

O que é Shadow IT e como detê-lo?

"New Zealand government cybersecurity announcement graphic highlighting October 2025 deadline for strict DMARC email authentication enforcement, with a map of New Zealand and a shield lock icon."

Nova Zelândia Define Prazo de Outubro de 2025 para Aplicação Rigorosa do DMARC

Graph showing ROI growth alongside a secured email icon, illustrating how DMARC implementation protects business profits through improved email security.

DMARC e ROI: Protegendo Seus Lucros

"Infographic illustrating DMARCbis update with timeline markers, an email shield icon, and steps for organizations to prepare for enhanced email authentication standards."

DMARCbis Explicado: A Nova Atualização do DMARC e Como se Preparar

Benefícios do BIMI para Segurança de E-mail e Engajamento

"Discover why your emails are failing to reach inboxes and how to resolve delivery issues using SPF, DKIM, and DMARC for better email performance and trust."

Por que Seus E-mails Não Estão Sendo Entregues (E Como Corrigir)

Guide to complying with Microsoft sender requirements to prevent 550 5.7.15 rejections. Ensure proper email authentication with SPF, DKIM, and DMARC for improved deliverability

Como Corrigir o Erro de Rejeição de E-mail da Microsoft 550 5.7.515