Dentists, blockchains, novocain

Let’s begin by recapitulating the elements of the problem space. If I show up at the local practice in response to their dentist wanted ad on indeed.com there are three domains to consider. In the authorisation domain, I must present the appropriate qualification and the practice must be able to validate it. Of course, I must be able to demonstrate in the authentication domain that the qualification belongs to me. And although it is not at all necessary for the regular functioning of the practice, the identification domain must provide my “real” identity because of the rules of the medical world.

Let’s walk through these steps.

First, presenting the qualification.

Second, authenticating the qualification.

Third, linking the qualification to identity.

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Websec Canada: Launching replay attacks against the Wells Fargo Wallet service

xxx This white paper is a shortened version of the actual research. Unfortunately, the exploitation bug is not fixed yet. The company was notified and informed about the issue. However, the bug is not fixable (at the moment). From Websec Canada: Launching replay attacks against the Wells Fargo Wallet service . xxx

There is no excuse for not taking cards

So we went to the pub. For lunch. Seven of us. Say £20 per head. £100+ quid. Say £50 quid gross for the pub. Colleague goes to order food and drinks and pay at the bar. Apologetic barmaid comes over to explain that their “card machine” is down, so she can only accept cash. Under normal circumstances I would have simply walked out, feeling it wholly inappropriate to reward such a poorly managed establishment and, as a functioning actor in a capitalist economy, done my duty to depress their lunchtime takings. Here’s what we wanted to say: This is absurd. This is 2016 not 1916. Your card machine is down? Well, so what! Are you seriously telling me that mein host has no mobile phone number capable of registering for PingIt or PayM? That none of the staff or the pub itself have a PayPal account that I can send the money to? That neither the owners nor managers not contingency planners thought to tuck an iZettle behind the bar to use when the clunky and expensive GPRS terminal fails for o...

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