Cybercrooks are switching from the sweeping Heartland-style breach of years past to a focus instead on smaller, more tactical attacks that are more difficult to spot and counter.
Inside Information Leaked
One of most recent bank victims is Citigroup, which in August reported a pair of data breaches. One exposed more than 92,000 customers in its Japanese card unit, when a person affiliated with an outsourcer illegally obtained inside information for a third party. But there was a bright spot to this unwelcome episode. Citigroup said that personal identification numbers were protected, so unauthorized use of the personal data to commit card fraud was unlikely.