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Interesting that the EU is starting to move towards a consolidated tape around the same time that many US traders have shifted away from the consolidated tape to direct exchange feeds.

On the plus side, the move in the US towards consuming direct exchange feeds has contributed to the growth of commercial off the shelf technology to aggregate and process exchange data.... i.e. once upon a time it was difficult and expensive to build a ticker plant, now you can buy them in (fast) boxes off the shelf. 

Yes, the iPhone gets synched to your computer and an image of your iPhone's database is stored on your computer.  So are copies of your calendar, your address book, etc..

So if your computer gets compromised, this information is available.

But if your computer gets compromised, ALL the data you store on it is available.

So the basic lesson is that you should secure your laptop/desktop machine properly.

But you already do that, right?

Agreed that predictable latency is as important as low latency.  Which is why the exchanges are now starting to talk about std deviation of latency or latency at the 80th/90th percentile and not just average latency. 

But what evidence is there of big banks building their own networks and feed handlers in-house?