Re:Why TLS 1.3 isn't in browsers yet
by roblabla on Thursday December 28, 2017 @04:21AM
(#16021103)
Flash could do that, and yet I've never heard of it as a problem.
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Generally is not a problem, as Flash needs to check a file called "crossdomain.xml" that is served from the destination server, which specifies how Flash can communicate with it.
http://www.adobe.com/devnet/articles/crossdomain_policy_file...