Do you have caller ID on your phone?
Today, about 99% of phones come with a caller ID service that is
automatically enabled by default. When it comes to home telephones
(landline) with caller ID, one could contact their phone company
and opt out of the caller ID service if needed.
More importantly, the caller ID feature that we have come to
trust is not as secure as it was in the past. Anybody can change or
fake the number that is displayed on the caller ID with a simple
spoof calling card.
Be careful and remember that anyone can change their caller ID
number.