ATLANTA (AP) — Companies across the globe are on high alert to tighten up network security to avoid being the next company brought to its knees by hackers like those that executed the dramatic cyberattack against Sony Pictures Entertainment. "The Sony breach is a real wake-up call even after the year of mega-breaches we've seen," says Lee Weiner, Boston security firm Rapid7's senior vice president of products and engineering. "Movie studios have, by and large, behaved as high-security intellectual property purveyors; prints have been tightly controlled, screeners are watermarked, and bootleggers are prosecuted wherever possible," says Seth Shapiro, a professor at the University of Southern California's School of Cinematic Arts. Warner Bros.