As many as 250 Hyatt hotels globally, all of which it manages directly, had been infected by the malware --between Aug 13, 2015, and Dec 8 ...

"As more and more devices get connected to the Internet/network, the level of sophistication of these attacks is also on the rise," he said.

Network infections were also recorded in the US, the UAE, Singapore, Kazakhstan, the Philippines, Hong Kong, India, Indonesia, Germany.