Privacy Analysis and Enhancements for Data Sharing in *nix Systems

This paper analyses the data sharing mechanisms of *nix systems and identify an immediate need for better privacy support. For example, using a simple insider attack the authors were able to access over 84 GB of private data at one organisation of 825 users, including 300 000 e-mails and 579 passwords to financial and other private services websites, without exploiting any technical vulnerability.