http://news.cnet.com/8301-27080_3-20077732-245/kevin-mitnick-sho
s-how-easy-it-is-to-hack-a-phone/

"Then he was prompted to enter the area code and phone number that he wanted
to call (mine) and the number he wanted to be
identified as calling from (again mine). Next thing I know I'm
listening to a voice message a friend of mine left me last night
that I hadn't erased.

"If I want to avoid having anyone use Caller ID Spoofing to
access my voice mail again, I need to change my phone settings to
require a PIN even when checking voice mail from my mobile device."

--- Thunderbird 2.0.0.24 (Windows/20100228)
 * Origin: Fidonet Via Newsreader - http://www.easternstar.info (1:123/789)