““Specialized policies to protect against online attacks are offered by about 50 carriers, including big names like the American International Group, Chubb and Ace. As data breaches have become a reality of the business world, more companies are buying policies; demand increased 21 percent last year from 2012, according to Marsh, a risk management company and insurance broker. Yet companies say it is difficult to get as much coverage as they need, leaving them vulnerable to uncertain losses.””