Cognitive impairment begins subtly at first, but the elder is vulnerable to manipulation even in the earliest stages of dementia.

FORBES: Is A Family Member Ripping Off Your Aging Parent?

Mr Makrit says illiteracy and ignorance have made people vulnerable to manipulation.

BBC: The Afghan 'green-on-blue' attacker seen as a hero

For UBS and its shareholders, the immediate questions should be why it was still vulnerable to this sort of alleged manipulation more than three years after Mr Kerviel's loss.

ECONOMIST: UBS��s trading loss