bramcohen
Joined 17 years ago
Karma
175
Submissions
45
Member since
Jan 30
Recent submissions
Comment · 7 months ago
The whole point of using a proper CRDT is that it's easy to reason about what it does. It took me a while to figure out the details of how to build one.
Comment · 13 years ago
The endgame of effectiveness of stego with this framework of published techniques versus customized detectors for those techniques specifically is going to be much, much more difficult for the detector than it is today, if not outright losing. As for your claim that it isn't easy to stego techniques: Seriously, go read through the docs before making claims. You're just plain wrong, and obviously so.
Comment · 13 years ago
To clarify: There is not, and cannot be, a universal DissidentX encoding detector. It will always, always, be possible to iterate arbitrarily on the encoding technique, and this iterating is easy to do.
Comment · 13 years ago
This tool allows for the specifics of how the encoding is done to be changed without the decoding algorithm needing to be changed ever, so yes in fact it is ready to be used, although better encoders are both easy to write and welcome.
Comment · 13 years ago
There was a CIA contractor who outright defrauded them claiming that he had tools which were detecting steganographic messages used by terrorists on the internet. He didn't get prosecuted because they were too embarrassed to admit that they'd been completely bamboozled.
Comment · 13 years ago
This is a framework for steganographic schemes, not a specific steganographic scheme. The specific ones thrown in are just for demonstration purposes. The versatility of this approach is a major step forward in defeating statistical detection schemes. You of course don't know this, because you haven't read through the page and figured out what the code does.
Comment · 13 years ago
In San Francisco at BitTorrent Inc. we're hiring a number of developer positions, most heavily web front end engineers. https://angel.co/bittorrent
Comment · 13 years ago
Low enforcement might start issuing warrants to hand over your customer list as a list of potential suspects. If I were you I'd start that rumor myself.
Comment · 13 years ago
The traditional overlay approach involves a bunch of full trees, and uses multiple trees as a way around dealing with leaf nodes being unutilized. My approach uses multiple groupings, which do not overlay, screams within them, and does something completely different for the last hop. They're completely different architectures. I have trouble taking seriously any paper which says that it makes heavy use of multiple description coding. If you have congestion control, skips should be an extreme and bad event.
Comment · 13 years ago
Those other technologies have latencies measured in dozens of seconds or minutes, while mine is measured in seconds.
Comment · 13 years ago
Over time I've made interview challenge problems progressively easier, as I've found that the trickier ones don't give any more information than the easier ones. My challenge now basically amounts to 'read this doubly nested for loop and tell me what it does', equivalent in difficulty to fizzbuzz.
If you can't solve that, even in the pressure of an interview, then I'm sorry, but you have no business working as a programmer, and I'm offended that you even applied.
And yes, people flunk it all the time.
Comment · 13 years ago
You should probably make your code robust to this sort of data corruption in the future.
Comment · 13 years ago
Looking at the correlation in students between year to year makes clear what's going on - http://garyrubinstein.teachforus.org/2012/03/06/analyzing-re...
There's such a high correlation between an individual student's score from one year to the next, and the number of data points is so small, that trying to tweeze out the teacher's contribution in a statistically meaningful way is fairly hopeless.
What I'd like to see are correlates with a teacher's own scores on the tests of the material they're supposed to be teaching (oh you think they all can get perfect scores easily? Hah!) and whether teachers banned from giving homework do any worse, and whether dumping the enforced curriculum in favor of letting students study at their own pace makes any difference. Given how little what the teachers actually do seems to make, it would be logical to at least dump the things which make school dull and unpleasant.
Comment · 14 years ago
In regards to the question of 'Is it legal to fire this person for this?' at least in California it's a slam dunk - the answer is yes. One of the questions on the harassment training I had to take was for a related scenario, where a boss cut off an affair with an employee and later on fired her because his wife found out and wanted him to, and the whole point of the question was that the firing was legal. If it's legal to fire under that circumstance, it's definitely legal to fire under this one.