[LINK] Banks eye bootable Linux CDs

Glen Turner glen.turner at aarnet.edu.au
Sun Mar 27 12:40:34 EST 2005


David Lochrin wrote:
> 
> Man-in-the-middle attacks like that are not possible with IPsec (encrypted & authenticated) transport

You've missed my point. SSL/IPsec secures the Bank computer<-->PC
connection.  That's no much use if the PC is under the control
of a hostile program.  In that case, one the user has authenticated
(with a token or otherwise) the hostile program can pump down
bogus transactions.

Transaction authentication moves the trust relationship from bank
mainframe <--> user's PC to bank mainframe <--> token.  So the
token itself would need to be subverted to authorise a bogus
transaction.

> Authenticating each transaction shouldn't be necessary if the session is properly secured.

But it's not properly secured.  User's PCs are crawling with hostile
programs -- viruses, spyware, trojans, etc.


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