eBay suffering the biggest hack of all time led to the exposure of lots of personal data including postal addresses, dates of birth and phone numbers for millions of people around the world. While the company insists no financial information was stolen, private personal data still holds a lot of value. But what options do users have when a site demands personal information as a condition of use, with no way of determining how secure that data will be? “We have to take care of our data, but in many circumstances if we want to use a service we have no choice but to surrender data, stuff that is very difficult to change,” Rik Ferguson, global vice president of security research at security software firm Trend Micro, told the Guardian in the wake of the hack.