Spies working for Chinese intelligence are using job search and recruitment websites, including LinkedIn, to lure Western workers into sharing sensitive information, according to a joint advisory by the FBI, the U.K.’s security service MI5, and the governments of Australia, Canada and New Zealand.

The advisory says Chinese spies pose as online recruiters and human resources firms who represent fake companies purportedly located outside of China, and target people with the aim of obtaining non-public information that might benefit Beijing.

The advisory comes as governments continue to issue warnings about Chinese espionage, even as the U.S. and the U.K. have tried to improve relations with Beijing of late. While Chinese spies often rely on hacking to steal information, the advisory underscores how spies also attempt to cultivate sources through public websites and communities.

China’s military intelligence services “ultimately seek to acquire privileged military, political and economic intelligence that can provide China with a strategic and tactical advantage over the Five Eyes,” the advisory reads, referring to the decades-old intelligence-collection alliance formed by the five countries behind the joint statement.

The spies target and cultivate long-term relationships with security clearance holders and military personnel, particularly in the Indo-Pacific region, as well as journalists, academics and think-tank employees with knowledge of unclassified information. Targets are selected partly based on their resume and the likelihood that they might have knowledge of potentially sensitive or non-public information.

Per the advisory, unclassified information can still be useful to the spies, particularly if it is combined with other, more sensitive information that can benefit Beijing’s policy decisions.

When reached by TechCrunch for comment, a spokesperson for LinkedIn said: “Creating a fake account or misrepresenting your identity is a clear violation of our terms of service. We remain focused on detecting state-sponsored abuse, and will continue to enforce our policies against fake accounts.”