Despite experts agreeing on many security best practices, there remains a gap between their advice and users’ behavior. One example is the low adoption of secure mobile payments in the United States, despite widespread prevalence of credit and debit card fraud. Prior work has proposed nudging...

Privacy and security tools can help users protect themselves online. Unfortunately, people are often unaware of such tools, and have potentially harmful misconceptions about the protections provided by the tools they know about. Effectively encouraging the adoption of privacy tools requires...