A Security Engineer Must Add Additional Protection to a Legacy

A Security Engineer must add additional protection to a legacy web application by adding the following HTTP security headers: -Content Security-Policy -X-Frame-Options -X-XSS-Protection The Engineer does not have access to the source code of the legacy web application. Which of the following approaches would meet this requirement?

A) Configure an Amazon Route 53 routing policy to send all web traffic that does not include the required headers to a black hole.
B) Implement an AWS Lambda@Edge origin response function that inserts the required headers.
C) Migrate the legacy application to an Amazon S3 static website and front it with an Amazon CloudFront distribution.
D) Construct an AWS WAF rule to replace existing HTTP headers with the required security headers by using regular expressions.

Correct Answer:

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