this is why i just never directly answer the phone. unless i recognize the number on caller id, or am actually expecting someone to call me, all incoming calls go to voicemail. my friends and family all know that this is how i operate so they know that if they call me from a strange phone they should leave a message and wait a few minutes for me to call them back.
Kevin Mitnick's The Art of Deception: Controlling the Human Element of Security and Bruce Schneier's Secrets and Lies are essential reading on this topic.
anders pearson
