This a very important question in view of the recent problems of hackers and stolen person information. Recently, Sony and Citibank had some problems. There are several things that companies can do to protect their information and the information of their customers.
First, they need to make sure that they are up to date on what hackers are doing. In order to do this, they need a very up to date IT department. In addition, they need to make sure that they have fire walls setup to protect their online systems and information.
Second, everything needs to be encrypted. They need to make sure that none of this information can get out. Also a must is up to date anti-virus software that will protect all their systems.
Third, they need to make sure that the information that comes their way through their customers is also encrypted and protected. In connection with this, they need to make sure that customers know their online policies, such as they will never ask for a password or that they will never solicit information from them. They can also do things like change the password on a automatic basis ask their customers to do the same.