Having information about clients and customers is important, but ensuring that private information remains secure might be just as vital to the health of a small business. That’s according to data professionals and others who are marking this year’s Data Privacy Day on January 28. Many small businesses are not well prepared for the tricks that hackers use to extract data from their information systems or to deal with the fallout from such an occurrence, according to Bindu Sundaresan, a senior security professional for AT&T.