While a few of Friday's talks contained little new, original, or useful information (disappointingly the former Facebook CSO's talk was particularly inane), the majority of the presentations were interesting. A few were eye-opening. Here are some short summaries of my favorites.
Crawling Bittorrent DHTs for Fun and Profit by Scott Wolchok
Scott presented his research on creating a very comprehensive database of Bittorrent Distributed Hash Tables. Suffice it to say that his approach and findings will unfortunately prove very useful to record companies if they aren't already using these techniques. File sharers beware!
The Law of Laptop Search and Seizure by the EFF legal team
This talk focused on what law enforcement can and can't do (but may still try to get away with!) when seizing your laptop. There were a lot of details presented... orally. EFF, why no presentation? A few key points from my notes (oh, and in case you hadn't realized: IANAL!)
- In general law enforcement can't just take your laptop and search it, your rights are protected by the fourth amendment
- If law enforcement does want to search your laptop they need a warrant or you need to fall in a exception category such as: you have a public share on your computer, you're sharing via P2P, you've given consent, there's immediate danger that you might destroy the info, etc.
- You can revoke consent at any time (i.e. if you first let law enforcement look at your laptop, you can change your mind)
- If there are multiple users of a computer, any one of them could give consent, though courts have recognized that this consent only goes so far as the authorizing user has access (though the forensic tools they use make no such distinctions... Beware!)
- All searches that occur at a border are considered reasonable. No suspicion is needed for any searches to occur, nor is a warrant needed (in other words: your rights go out the window!)
- You cannot be forced to give over your encryption keys, courts have found that this is a fifth amendment right, and the gov't hasn't appealed this decision
- Remote Computing Services, e.g. online backup or file sharing (like the very useful Dropbox). It is very easy for the gov't to get this data. They just need a subpoena, sometimes not even. Probably cause isn't required, since searching these cloud-based files often is how the gov't shows probable cause. They're not required to notify you within a reasonable time frame
- Electronic Communication Services, e.g. online mail services like gmail. Your data is only protected for the first 180 days. After that the gov't doesn't need a warrant to get access to this info. However the gov't doesn't think this law applies to emails you've read, drafted, and sent. This is being appealed and the DoJ is fighting it. The EFF, ISPs, and others are trying to get a better law passed, maybe next year (the sooner the better!)
- The EFF's advice: POP your mail, don't leave it in the cloud, and avoid online backups if possible
Lord of the Bing: Taking Back Search Engine Hacking from Google and Bing by Rob Ragan and Francis Brown
The most interesting talk of the day. These guys have taken google search engine hacking to a whole new level. Very creative. Sadly I haven't found their presentation online but the tools they wrote are. One of my favorite sections focused on combining google hacking with custom searches into a massive RSS feed for real time updates of vulnerable sites crawled by google. I'm sure we haven't heard the last of this...
Weaponizing Lady GaGa, Psychosonic Attacks by Brad Smith
Brad is an excellent speaker and by far the most entertaining of the day. He discussed the uses and misuses of psychosonics: the generation of (generally undetectable) sound patterns designed to alter a target's state of mind. One of the funniest parts of his speech came when he listed the top 10 sonic torture songs... :-)