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Security

Submission + - cingular voicemail hack

gomez writes: "i have no idea where to let people know about this. but i'm loyal to slashhdot so why not here?

i'm an admin for a call center and i was messing around with caller id the other day. i remember dialing voicemail by pressing 1 on my cingular cell phone and getting straight in w/ out a verification of password. well i thought, what if i can change my outbound ISDN caller ID on my landline phone to a friends phone, figuring that if the mechanism is only checking caller ID why not fake it? it totally worked. i was in my friends voicemail checking his messages.

i thought, well who has the power to change caller id? only admins right? well i checked the client app for use with our PBX, and lo and behold they of course (with certain user privileges) have the power to change outbound caller ID on the fly. I think most phone systems these days in a business environment allow a user to do so, but again only if they have the privileges.

cingular has already been notified about this, i just thought i'd light the fire under their arses.

check your phone software to see if you can change your outbound caller id.. i bet you see the same result.

    — gomez"
Space

Submission + - A five-gear space rocket engine

Roland Piquepaille writes: "Georgia Tech researchers have had a brilliant idea. Rocket engines used today to launch satellites run at maximum exhaust velocity until they reach orbit. For a car, this would be analog to stay all the time in first gear. So they have designed a new space rocket which works as it has a five-gear transmission system. This space engine uses 40 percent less fuel than current ones by running on solar power while in space and by fine-tuning exhaust velocity. But as it was designed with funds from the U.S. Air Force, military applications will be ready before civilian ones. Here is how this new rocket engine works."
The Almighty Buck

Submission + - Best Place to Sell Used Computer Equipment?

pkcs11 writes: "I have been trying to sell a PC I recently bought from Dell. I was a mac user prior and thought a pimped-out PC might be just as useful as a mac....needless to say I was wrong. The problem is, I listed it on Craigslist but only got 419 Scammer responses. I listed it on eBay but found more 419 Scammers and no serious bidders.
Is there a site that specializes in re-selling (or auctioning) PCs where good results are the norm?
"

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