Only yesterday I was trying to explain to someone I know why they should not have the same password on different sites and devices.
I also explained that passwords should follow certain ... rules. Upper case, lower case no dates of births or family names.
The person I was explaining it to said they could not be bothered. Asking for trouble like that and I will be sending them the link below.
Warnings on 'complex' Android virus http://www.bbc.co.uk/news/technology-30143283