At 11:14 PM 10/24/2013, Peter Gutmann wrote:
(This issue isn't unique to telcos, it seems to be near-universal, it's always easier to keep data lying around than to figure out what to delete).
I've seen that as well. The phenomenon would seem to be a hallmark of poor design. The system should keep track of what went where and automatically delete it unless prevented from doing so. That was certainly the case with the systems and data I have personal experience with, poor design leading to irresponsible retention of user financial (credit card) data in particular.
