Dark clouds and silver linings: impact of COVID-19 on internet users’ privacy

Abstract

Objectives To examine the impact of COVID-19 pandemic on the extent of potential violations of Internet users’ privacy. Materials and Methods We conducted a longitudinal study of the data sharing practices of the top 1,000 websites in the US between April 9th and August 27th, 2020. We fitted a conditional latent growth curve model on the data to examine the longitudinal trajectory of the third-party data sharing over the 21 weeks period of the study and examine how website characteristics affect this trajectory. We denote websites that asked for permission before placing cookies on users’ browsers as "privacy-respecting". Results As the weekly number of COVID-19 deaths increased by 1,000, the average number of third parties increased by 0.26 [95%CI, 0.15 to 0.37] P<.001 units in the next week. This effect was more pronounced for websites with higher traffic as they increased their third parties by an additional 0.41 [95% CI, 0.18 to 0.64]; P<.001 units per week. However, privacy respecting websites that experienced a surge in traffic reduced their third parties by 1.01 [95% CI, -2.01 to 0]; P = 0.05 units per week in response to every 1,000 COVID-19 deaths in the preceding week. Discussion While in general websites shared their users’ data with more third parties as COVID-19 progressed in the US, websites’ expected traffic and respect for users’ privacy significantly affect such trajectory. Conclusions Attention should also be paid to the impact of the pandemic on elevating online privacy threats, and the variation in third-party tracking among different types of websites. Lay Summary As the COVID-19 pandemic progressed in the country, the demand for online services surged. As the level of Internet use increased, websites’ opportunity to track and monetize users’ data increased with it. In this research, we examine the extent to which websites increased the number of third-parties with which they share their user’ data and how such practices were moderated by a website’s level of respect for users’ privacy and traffic surge. We find that while the number of third parties increased over time, the websites with higher respect for privacy tend to decrease the number of their parties only if they also experience a significant increase in their traffic.

Medical journals and advertiser tracking—Consequences for patients, clinicians, and editors

“…In addition to potentially exposing patients to misleading information, when such advertisements begin appearing on shared computers, they may also compromise patient privacy. 15 – 17 …”