You have to assume that any system that collects and stores data which is not under your own control can be compromised. Whatever the organisation says.
Security is all about what you do, not what you believe others can do or tell you.
After getting my credit cards compromised a couple of times, I now have a special account and card I use for purchasing. I transfer money in online before I buy something, and there is never a balance of more than £50 in the card account. The card doesn't even have my name on it.
I had a merchant once who tried to up the price on a web item. They called me to say my card was invalid. That's how I found out they were trying to take more than agreed.
PS: My TomTom is old on a PDA. Nothing goes out 'cos the PDA has no Blutooth or web!
So how were they getting the 'driver data' ? My guess is when you connect their devices to the net to do a software update, it sends as much out as you get back. You get the same thing with cable TV companies. Every time you change channel, they could be tracking your preferences to send you targetted ads or sell the data on. This phrase 'anonymized data' is a good one and laughable.
Even UK secret government organizations make big mistakes by publishing word docs on the web with secrets they think have been erased by changing the color of the font to white! And then there is Wikileaks and it won't be long before it's Facebook and others.
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