These days individuals share personal data more than ever before. Technology has also advanced to allow companies to make use of personal data on an unprecedented scale. With so much personal data out there, you might wonder, who has personal data about me and how they will look after it. There are several common concerns among people about their personal data theses days and here are some of them: Since I booked a holiday online, I’m getting loads of emails from companies trying to sell me car hire, airport parking, and hotels.