What to do in the aftermath of the JPMorgan breach

Small business owners often work hard and fast to stay alive in competitive markets, so a phone call from a scammer at the busiest time of the day might work.

"Any small business who is already a customer of JPMC should make sure all their employees are aware that the breach happened, and be specifically careful to make sure that anything that looks like communication from JPMC is actually from the bank," Mike Lloyd, chief technology officer for RedSeal Networks, said.

Chase also needs to launch an aggressive campaign that tells affected customers what the bank would never do under the circumstances, which includes asking for online banking credentials.

The Chase breach is only the latest of several high-profile compromises that has shaken consumer trust in businesses to secure customers' personal data. Retailers Target and Home Depot each lost 10s of millions of credit and debit card numbers to criminals who hacked into their electronic cash registers.

In light of the compromises, experts are calling for companies to work with government agencies in building a secure platform in which businesses can share technical details about attacks privately. Such information can help in bolstering defenses.