Yup ... agreed.
Plenty of such posts in the Suspicious Telephone Calls thread. Often the cardholder then proceed to shift the blame outwards (Read : not to oneself) and many also have the notion that having high credit limit is very dangerous.

My 2 cents is ... CL low also if one is not smart about their personal info will get scammed and is a risk/liability either way.
A fool proof way not to get cc fraud cases is not to hold any credit card in the first place but it's a rather impractical idea given today's lifestyle right ?