How old data can come back to haunt you

The recent media coverage of the Barclays’ data breach (http://www.computerweekly.com/news/2240214060/Barclays-under-scrutiny-after-leak-of-27000-customer-records) shows that even older customer data from defunct businesses and subsidiaries can have real value if it should fall into the wrong hands. For a well-known brand, a data leak like this is hard to stomach, particularly if its customers have suffered financially. But the bigger consequence is one of trust and reputation which we all know takes a lifetime…