I've had a few similar courses at university, but they've always been limited to NP-completeness, does anyone know how I can expand on this? That is, learn beyond NP-completeness (Books / Online courses etc)?
Sites like this is great and all, but I wish they included some commonly used regexes. Like a list of 'good' regexs to validate phone numbers, emails and other common stuff.
It would actually be pretty cool to have a site like this except you could add the regex to a list, and then people could upvote the regexe depending on the quality of it.
Surely it would be possible to create encoding resistant stenography. Will the stenography be affected, sure, but it should be possible to create error-resistant stenography up to a certain point.
Synchronizing all your files sounds like space-waste. It would be trivial to determine if dropbox does that, simply by monitoring the number of bytes sent to dropbox (Create a new file of size x, determine if the stream to dropbox transmits at least x amount of bytes) or by replacing the SSL certificate in the program with your own and then set up a fake server (This would be harder) to determine exactly what is being transmitted.
If this is indeed something nefarious, I would much rather assume it would transmit file hashes rather than the files itself. Although I can't possibly imagine this is actually true, the implications would be devastating for dropbox and it should be easy to verify by an independent third party.
I don't know much about HDMI, but couldn't I just run the video/movie in fullscreen and then capture the output from the HDMI and save the raw output to a disk?