My grandfather is extremely gullible.
Scammers have contacted him through the internet and phone.
He's usually very willing to oblige them, too.
Some elderly people can be quite vulnerable. Especially if they are lonely, their minds are diminished, and/or they feel very secure financially. They lived in a time where this was not so bad...
Anyway, this link I've provided is some tips that help prevent our elderly from falling victim to scams. I put my grandparents on the dnc registry.
I used to run a call center that collected for charities a lot of the people who donated were elderly they were just happy to have someone to talk to.