The Target data breach made it clear that financial institutions have a vested interest in protecting customers’ financial information. Consider how much personal and financial information about our customers is housed on the Internet. Financial institutions already apply out-of-band security in many instances. Facebook, Twitter and Instagram are very popular, but they are not what I would call bastions of IT security. Customers should be discouraged from using the same username-password combination for online banking, or making online purchases, as they do for their social networking sites.”]
Source: https://www.cuinfosecurity.com/blogs/out-of-band-authentication-fresh-look-p-1677