Top Websites Harvest Your Keystrokes To Sell Your Browsing Habits

"Hundreds of homepages, including those of Microsoft, Adobe and Wordpress, use secret code, called 'session replay' scripts, to monitor your online activity. Hidden strings of data are used to record everything you do while visiting a page, including what you type and where you move your mouse. This could be used by third parties to reveal everything from credit card details to medical complaints, as well as putting you at risk of identity theft and online scams."