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Does firefox support 128 bit incription for online banking ?

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Is it a secure browser when one is doing on line banking or online investing ? Thanks Carol .

Is it a secure browser when one is doing on line banking or online investing ? Thanks Carol .

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Firefox supports AES-256 (256 bit) encryption since 2002 on web sites that support it like this site.

See How do I tell if my connection to a website is secure?