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Social Networks

Submission + - Doctorow: Your Ex-Co-Workers Will Kill Facebook (informationweek.com) 1

Random BedHead Ed writes: "Cory Doctorow has an interesting new article in Information Week about the downside of social networking, with a focus on Facebook. While it starts with some minor but insightful quibbles (like "the steady stream of emails you get from Facebook: 'So-and-so has sent you a message.' Yeah, what is it? Facebook isn't telling — you have to visit Facebook to find out"). But then it gets into a more social critique of social networking: 'Imagine how creepy it would be to wander into a co-worker's cubicle and discover the wall covered with tiny photos of everyone in the office, ranked by "friend" and "foe," with the top eight friends elevated to a small shrine decorated with Post-It roses and hearts.' Do you really want to add your boss and coworkers to your friends list? (And more to the point, do you really have a choice?)"
Yahoo!

Submission + - Adverts to appear in PDFs 1

An anonymous reader writes: The BBC is reporting that Yahoo! has a deal with Adobe to allow adverts to appear in PDFs. The ads won't appear when the document is printed. Ad-blocker for PDF viewing anyone?
Math

Submission + - Possible backdoor found in RNG standardizedby NSA (schneier.com) 1

kfz versicherung writes: "Defining algorithm for random numbers is one of the hardest fields in mathematics. We all know Microsoft failed miserably, even Linux (pdf) and SSL had their fair share of troubles. But now Bruce Schneier tells us the Strange Story of Dual_EC_DRBG, one of four random number generation algorithms standardized by the NSA (pdf). While on first look just slower than the other three, Dan Shumow and Niels Ferguson showed at Crypto 2007 that the algorithm contains a weakness that can only be described a backdoor. Their presentation showed that the constants used have a relationship with a second, secret set of numbers that can act as a kind of skeleton key. If you know the secret numbers, you can predict the output of the random-number generator after collecting just 32 bytes of its output."

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