One of my guesses would have been updates via SMS. I've read it's easy to forge caller ID; if it's as easy to forge an SMS origin-number, and you knew these accounts were set up to allow updates via SMS from a certain number... voila!
http://blog.twitter.com/2009/01/monday-morning-madness.html
One of my guesses would have been updates via SMS. I've read it's easy to forge caller ID; if it's as easy to forge an SMS origin-number, and you knew these accounts were set up to allow updates via SMS from a certain number... voila!