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Shadow Roles: AWS Defaults Can Open the Door to Service Takeover

Aqua Security reveals that AWS auto-creates service roles with overly broad permissions by default, enabling potential service takeover — a risk organisations inherit without any misconfiguration on their part.

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Filed by Aqua Security29 April 20251 min readRead at source ↗

What if the biggest risk to your cloud environment wasn’t a misconfiguration you made, but one baked into the defaults? Our research uncovered security concerns in the deployment of resources within a few AWS services, specifically in the default AWS service roles. These roles, often created automatically or recommended during setup, grant overly broad permissions, such as full S3 access. These default roles silently introduce attack paths that allow privilege escalation, cross-service access, a

Editorial Analysis

Why it matters

When cloud providers ship insecure defaults, organisations inherit risk they never explicitly accepted — undermining the shared-responsibility model that compliance frameworks rely on.

What to do

Audit all default AWS service roles across your accounts, replace overly permissive ones with custom least-privilege roles, and enforce restrictions via Service Control Policies.

Board brief

Research shows AWS auto-creates service roles with excessive default permissions, potentially exposing enterprises to service-takeover attacks without any misconfiguration on their part.

Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.

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