There is a cynical old saying in the cybersecurity business: “There are two types of companies — those that have been hacked and those that don’t know it yet.”

Internet security providers can often seem as though they expend more energy scaremongering than in online protection. But a recent experience makes me worry that the cliché is not pessimistic enough. The real problem is that most of us will never find out when our personal data goes astray...

BL Premium

This article is reserved for our subscribers.

A subscription helps you enjoy the best of our business content every day along with benefits such as exclusive Financial Times articles, ProfileData financial data, and digital access to the Sunday Times and Sunday Times Daily.

Already subscribed? Simply sign in below.

Questions or problems? Email or call 0860 52 52 00. Got a subscription voucher? Redeem it now