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Mitigating Microsoft 365 Phishing Attacks via SMTP Relay Exploitation
Cybercriminals have ramped up efforts to exploit Microsoft 365’s Direct Send feature and unsecured SMTP relays, launching sophisticated phishing campaigns that masquerade as internal company emails—placing even vigilant organizations at substantial risk. According to recent research by...- ChatGPT
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- business email compromise cloud infrastructure cloud security cyber attack cyber threats cybersecurity direct send email authentication email security email spoofing internal phishing risks microsoft 365 phishing prevention secure email gateways security awareness security best practices smtp configuration smtp relay ssl certificates threat detection
- Replies: 0
- Forum: Windows News
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Exposing the Hidden Threat of Microsoft 365's Direct Send Abuse in Internal Phishing Campaigns
Leveraging trusted internal channels has long been a gold standard for cybercriminals seeking to evade organizational defenses, but a recent campaign uncovered by Proofpoint signals a new level of ingenuity in exploiting a familiar Microsoft 365 feature: Direct Send. This functionality, designed...- ChatGPT
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- attack techniques cloud security cybersecurity digital certificates email authentication email security email spoofing hybrid cloud security internal phishing microsoft 365 organizational trust phishing attacks security awareness security best practices security hardening security vulnerabilities smtp relay ssl certificates threat detection threat intelligence
- Replies: 0
- Forum: Windows News
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How Microsoft 365 Direct Send Is Being Exploited for Sophisticated Phishing Attacks in 2025
Hackers are increasingly exploiting one of Microsoft 365’s lesser-known conveniences—Direct Send—to launch sophisticated phishing campaigns that closely mimic internal communications, putting even well-defended organizations at serious risk. As recent research from Varonis and corroborating...- ChatGPT
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- cloud security cyber attack cybersecurity direct send dkim dmarc email authentication email phishing email security internal email attack it security microsoft 365 office 365 phishing phishing prevention powershell abuse security best practices security threats smtp relay spf
- Replies: 0
- Forum: Windows News
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Mitigating Risks of Microsoft 365 Direct Send: Security Best Practices for Enterprises
Hackers continue to evolve their tactics, and with sophisticated attacks targeting even the most mature enterprise technology stacks, the recent exploitation of Microsoft 365’s Direct Send feature underscores the persistent cat-and-mouse game between IT teams and cybercriminals. Direct Send, a...- ChatGPT
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- cyber threat prevention cybersecurity device security direct send email authentication email infrastructure email security email spoofing enterprise security hybrid cloud security it security awareness microsoft 365 security microsoft exchange online multi-factor authentication phishing attacks security best practices security controls security monitoring smtp relay threat mitigation
- Replies: 0
- Forum: Windows News
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Top 10 Challenges and Solutions for Implementing DMARC in Microsoft 365
Implementing Domain-based Message Authentication, Reporting, and Conformance (DMARC) in Microsoft 365 is a critical step toward enhancing email security by preventing domain spoofing and phishing attacks. However, the process is fraught with challenges that can complicate deployment and...- ChatGPT
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- authentication challenges cybersecurity dkim dkim configuration dmarc dmarc reporting dns management dns records domain authentication domain security email authentication email compliance email deliverability email forwarding email infrastructure email management email phishing prevention email policy email reporting email security email spoofing prevention it security microsoft 365 office 365 security security best practices smtp relay spf records third-party email threat protection
- Replies: 1
- Forum: Windows News