Use encryption for data both in transit and at rest. Deploy Email Security Gateways to filter out malicious emails. Implement multi-factor authentication for accessing email marketing platforms. Regularly update and patch systems to avoid vulnerabilities.
Best Practices
Train employees on security awareness and DLP protocols. Conduct regular audits to identify and rectify potential risks. Have a response plan for data breaches and loss. Limit access to sensitive information on a need-to-know basis.