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crossdomain.xml

Security Researcher Detected: You might have ended up here because your site vulnerability scanner found something interesting. Hi! I'm a security engineer and I'm having a good time interacting with the people and bots that are interested in information security.

You will hopefully find this site is well-secured and I'm not interested in being hacked. I'm interested in learning about how people try to hack me, though.

What is this endpoint?

crossdomain.xml

Flash Cross-Domain Policy

What an attacker could do

An overly permissive policy (allow-access-from domain="*") lets any site make cross-domain requests with the user's credentials, enabling data theft via legacy Flash/Silverlight clients.

How to defend it

Remove the file if no Flash/Silverlight clients exist, or restrict allow-access-from to specific trusted domains and set permitted-cross-domain-policies to none.

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