Originally Posted by gbaglo
I got a spam call on my home phone and the caller ID indicated that the call came from my phone.
The joys of caller ID plus VoIP: the system was designed for phone companies to pass caller information from other trusted phone companies on to the recipient and so they didn't need to secure it from fraudulent use, but since they allowed people to connect from other systems (sending voice over network connections, or VoIP) the caller ID information can be whatever the caller wants... so it means very little.
I got a spam call from Sprint once, years ago, selling their long-distance service. They fraudulently presented the caller ID information as coming from my own number (the one they were calling), and when I challenged this the call centre operator gave some song and dance which was complete bunk, technically. They, like other businesses lacking moral standards, were just picking a number which I was unlikely to block. I told them I would never buy anything from a company which behaved that way, and I never have paid Sprint for anything.
On my office phone, most spam calls claim to originate from the same exchange, but they're coming from somewhere else. I no longer answer any call in my office which doesn't display a name; I don't answer any call on my mobile which isn't in my contacts list; I rarely answer any call on my home phone which is not in the phone's number list. If Her Royal Highness Queen Elizabeth II calls to invite me to tea at Buckingham Palace, I'll miss it because she's not in my contacts.
What's most annoying is being charged to receive this crap.