Chinese cyberattacks against close U.S. ally India have been a perennial problem for at least a decade, according to a cybersecurity company that tracks the matter.

FireEye, an 11-year-old company that specializes in defending against Chinese cyberattacks, announced last Friday that an advanced persistent threat, or APT, group in China was waging an “advanced campaign” to gain access to strategic computer systems in India. The group “sent targeted spear phishing emails containing Microsoft Word attachments” to more than 100 victims “with a focus on governmental, diplomatic, scientific and educational organizations,” FireEye reported.