I have begun the task of writing progress report. In the process I have been reading a couple of advices on writing dissertations, and I thought might just as well share the best you.
Olin Shivers (Visiting DAIMI fall 2005) has a page on dissertation advice. His main point is clear: you should be able to phrase what your dissertation is about (your thesis) in one single sentence and use it as opening line of the dissertation and whenever you need to drive home the point of your dissertation. I found his advice instructive and they are presented in a fun ironic way.
I have come up with the following thesis for my work: "Creating tools with strong security guaranties which exploits the
benefits obtained by combining confidentiality information from various sources is feasible and useful."