1M Ways Attackers Breach Office 365 Email

Read the results of “1 Million Ways Attackers Breach Office 365 Email,” an Area 1 Security study analyzing nearly 1.5 billion messages sent to customers that use Microsoft as their email provider. Over the six-month period from March to August 2020, Area 1 found that nearly 1 million (over 925,000) malicious emails bypassed Office 365 and well-known secure email gateways (SEGs).

As detailed in the report, attackers increasingly use highly sophisticated, targeted campaigns like Business Email Compromise to evade traditional email defenses, which are based on already-known threats. Attackers also often use Microsoft’s own tools and branding to bypass legacy defenses and email authentication (DMARC, SPF, DKIM).
 

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