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AWS Certified Solutions Architect study material · question 64 of 500

Why does AWS warn against putting a password in EC2 instance user data?

  1. User data is neither authenticated nor encrypted, so anything on the instance can read it
  2. User data is written to CloudTrail in plain text
  3. User data is replicated to every instance in the Region
  4. User data is published in the instance's AMI description
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Answer: A. User data is neither authenticated nor encrypted, so anything on the instance can read it

Instance metadata and user data carry no authentication or encryption, so no password or long-lived key belongs there.

Source: Use instance metadata to manage your EC2 instance (Amazon Web Services) — Important

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