96% of US Hospital Websites Share Visitor Info With Meta, Google, Data Brokers

An anonymous reader quotes a report from The Guardian: Hospitals -- despite being places where people implicitly expect to have their personal details kept private -- frequently use tracking technologies on their websites to share user information with Google, Meta, data brokers, and other third parties, according to research published today. Academics at the University of Pennsylvania analyzed a nationally representative sample of 100 non-federal acute care hospitals -- essentially traditional hospitals with emergency departments -- and their findings were that 96 percent of their websites transmitted user data to third parties. Additionally, not all of these websites even had a privacy policy. And of the 71 percent that did, 56 percent disclosed specific third-party companies that could receive user information.

The researchers' latest work builds on a study they published a year ago of 3,747 US non-federal hospital websites. That found 98.6 percent tracked and transferred visitors' data to large tech and social media companies, advertising firms, and data brokers. To find the trackers on websites, the team checked out each hospitals' homepage on January 26 using webXray, an open source tool that detects third-party HTTP requests and matches them to the organizations receiving the data. They also recorded the number of third-party cookies per page. One name in particular stood out, in terms of who was receiving website visitors' information. 'In every study we've done, in any part of the health system, Google, whose parent company is Alphabet, is on nearly every page, including hospitals,' [Dr Ari Friedman, an assistant professor of emergency medicine at the University of Pennsylvania] observed. 'From there, it declines,' he continued. 'Meta was on a little over half of hospital webpages, and the Meta Pixel is notable because it seems to be one of the grabbier entities out there in terms of tracking.'

Both Meta and Google's tracking technologies have been the subject of criminal complaints and lawsuits over the years -- as have some healthcare companies that shared data with these and other advertisers. In addition, between 20 and 30 percent of the hospitals share data with Adobe, Friedman noted. 'Everybody knows Adobe for PDFs. My understanding is they also have a tracking division within their ad division.' Others include telecom and digital marketing companies like The Trade Desk and Verizon, plus tech giants Oracle, Microsoft, and Amazon, according to Friedman. Then there's also analytics firms including Hotjar and data brokers such as Acxiom. 'And two thirds of hospital websites had some kind of data transfer to a third-party domain that we couldn't even identify,' he added. Of the 71 hospital website privacy policies that the team found, 69 addressed the types of user information that was collected. The most common were IP addresses (80 percent), web browser name and version (75 percent), pages visited on the website (73 percent), and the website from which the user arrived (73 percent). Only 56 percent of these policies identified the third-party companies receiving user information. In lieu of any federal data privacy law in the U.S., Friedman recommends users protect their personal information via the browser-based tools Ghostery and Privacy Badger, which identify and block transfers to third-party domains.

Read more of this story at Slashdot.