Detect External Mail Forwarding for Professional Services & Consulting
How professional services & consulting organizations should implement EXT-07 for Microsoft 365 security and compliance.
Professional Services & Consulting organizations face unique security challenges when managing Microsoft 365 environments. The EXT-07 control (Detect External Mail Forwarding) is particularly important for this sector due to soc2 and iso27001 requirements.
Why Professional Services & Consulting Organizations Need This Control
Professional Services & Consulting organizations face specific regulatory requirements including soc2, iso27001, cis. The EXT-07 control helps address these requirements by:
- Mailbox forwarding rules to external addresses are identified
- Inbox rules forwarding to external domains are flagged
- No unexpected external forwarding rules exist
Attackers commonly set up mail forwarding rules after compromising accounts. These rules silently copy all emails to external addresses, enabling ongoing data theft even after the initial compromise is remediated.
Industry-Specific Considerations
When implementing EXT-07 in a professional services & consulting environment, consider:
- **Regulatory requirements**: soc2, iso27001, cis may mandate specific configurations
- **Risk tolerance**: Professional Services & Consulting organizations typically have moderate to low risk tolerance
- **Audit frequency**: Plan for regular compliance reviews
- **Documentation**: Maintain detailed records for regulatory inspections
Implementation Steps
To implement EXT-07 in your Microsoft 365 environment:
- Mailbox forwarding rules to external addresses are identified
- Inbox rules forwarding to external domains are flagged
- No unexpected external forwarding rules exist
This control requires manual implementation through the Entra admin center.
Professional Services Compliance Requirements
Professional Services organizations must comply with these frameworks, all of which address detect external mail forwarding:
Why This Control Matters for Professional Services
Attackers commonly set up mail forwarding rules after compromising accounts. These rules silently copy all emails to external addresses, enabling ongoing data theft even after the initial compromise is remediated.
Common threats in professional services & consulting:
- • Client data breaches
- • Insider threats from departing consultants
- • Business email compromise
For professional services & consulting organizations, EXT-07 is a key component of a compliant Microsoft 365 security posture. TrueConfig helps you implement and maintain this control while meeting industry-specific requirements.
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