Securing Email
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Email is the most ubiquitous and interoperable form of online communication today. However, email was not conceived with strong security guarantees, and the ensuing security enhancements are, by contrast, lacking in both ubiquity and interoperability. This state of affairs motivates our work. Our contributions include: (1) a systematization of secure email approaches taken by industry, academia, and independent developers; (2) an evaluation framework for proposed or deployed email security enhancements and a measurement of their security, deployability, and usability; (3) a stakeholder analysis and informed discussion of the current state of secure email; and (4) a research agenda highlighting open problems judged to be useful in pursuing secure email.
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