Exclusive-Palo Alto chose not to tie China to hacking campaign for fear of retaliation from Beijing, sources say
By Raphael Satter and AJ Vicens WASHINGTON, Feb 12 (Reuters) - Palo Alto Networks opted not to tie China to a global cyberespionage campaign the firm exposed last week over concerns that the cybersecurity company or its clients could face retaliation from Beijing, according to two people familiar 
