It has been reported that the amazing HTC Sense has added a recent feature that logs all kinds of personal data to a file that could then be accessed by applications on the device.
The critical thing to note here though is the first line of the below quote from Wired.com’s article. The app would have to request access, which you could always deny I guess?
It’s worth noting but i’m sure this will be fixed by a simple software update or setting.
“Any app can get access to this data simply through a permissions request.
The problem is due to logging tools that HTC recently added, which gather a huge amount of personal info and usage data. HTC hasn’t provided a reason for adding the tools.”