With everything moving to the cloud nowadays, security and privacy is often left behind. An ever increasing number of cloud storage operators offer low cost online storage. In this talk we will present our results on the popular service Dropbox, which relied heavily on data deduplication for better user experience. While data deduplication is a straight forward way to decrease costs in terms of bandwidth and storage, it has implications on privacy and security of user data if done wrong – there ain’t no such thing as a free lunch. We will furthermore present methods how data deduplication can work correctly.
Manuel was introduced to information security while graduating from a technical college and has done research in the areas of mobile security, cloud computing and compile-time obfuscation. He has appeared on national television, podcasts and possibly Chinese security blacklists. Furthermore, he has been known to use presentations with an average of 0.3 words per slide.