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Implementation -> Infrastructure Hardening: Filter outcoing traffic

Risk and Opportunity

Risk: A compromised infrastructure component might try to send out stolen data.
Opportunity: Having a whitelist and explizitly allowing egress traffic provides the ability to stop unauthorized data leackage.

Exploit details

Usefullness: Low
Required knowledge: Medium (two disciplines)
Required time: Medium
Required resources (systems): Medium

Additional Information

Implementation hints:
OWASP SAMM 2 Mapping: o-environment-management|A|1
ISO27001:2017 Controls Mapping: