End to end encrypted messaging and/or cloud storage
Most users are aware that email and most other forms of message exchange on the Internet is insecure, and after the disclosure of NSA documents by whistleblower Edward Snowden in 2012, it became clear that mass surveillance on the Internet was not only a theoretical possibility, but that an ongoing activity.
There already exists a lot of software to enable end-to-end encryption of messages exchanged over the Internet (e.g. Enigmail for Thunderbird, and the ProtonMail app), but still, adoption of encryption has been very limited, and constrained to certain subcultures. The classic paper Why Johnny can't encrypt from 1999 argued that the problem was poor usability of the available software. Quote:
User errors cause or contribute to most computer security failures, yet user interfaces for security still tend to be clumsy, confusing, or near-nonexistent.
I still think that this is still the case in 2018.
This master thesis is to use user centered design to explore the usability of secure cloud storage an message exchange over the Internet, as the user experience of ordinary users.