2 Oct
2011
2 Oct
'11
12:36 p.m.
On Sun, Oct 2, 2011 at 10:38 AM, Michael Thomas <mike@mtcc.com> wrote:
I'm not sure why lack of TLS is considered to be problem with Facebook. The man in the middle is the other side of the connection, tls or otherwise.
That's where the X509 certificate comes in. A man in the middle would not have the proper private key to impersonate the Facebook server that the certificate was issued to. Supporting TLS in their case is not good enough... they would need to force all connections to be over TLS, to achieve security against MITM. As soon as an app causes the end user to switch to a non-TLS connection, they are vulnerable.
Mike
-- -JH