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How does Fiddler decrypt the https headers?

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This is a migrated thread and some comments may be shown as answers.
Mark
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Mark asked on 15 Feb 2017, 09:11 PM
Being the very noobie I am with https, how is it that Fiddler can decrypt what is in the headers?  Does that imply that any "man in the middle" could decrypt those?  Is it REQUIRED that I encrypt what is in the Header content?  Or, if it is https, everything is encrypted including the headers?

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Tsviatko Yovtchev
Telerik team
answered on 20 Feb 2017, 04:53 PM
Hi,

Fiddler does just that - man in the middle. Once you put Fiddler generated certificate in your Trusted Root store Fiddler can impersonate any website you visit. Any other party that has a certificate in your Trusted Root could do the same.

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Tsviatko Yovtchev
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Tsviatko Yovtchev
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