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Chinese espionage is becoming more difficult for U.S. companies to track. The Asian country is shifting to targeting internet security services, researchers for Google said in a report Thursday.
The researchers said they recently discovered a new virus targeting the software security company Fortinet. Alleged Chinese hackers used a "back door" to hack the security company's system and upload malicious code to the company's security management tool, according to the report.

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"Given how incredibly difficult they are to find, most organizations cannot identify them on their own," Charles Carmakal, chief technology officer at the Google-owned company Mandiant, said in a statement to Axios. "It’s not uncommon for Chinese campaigns to end up as multi-year intrusions."
U.S. companies are finding Chinese espionage harder to track. China is shifting its attacks to internet security services. Google researchers have recently discovered a new virus targeting Fortinet, a software security company. Chinese hackers used a "back door" to hack the company's system and uploaded malicious code to the company's security management tool. Charles Carmakal said "Organizations cannot identify these attacks on their own, Chinese attack campaigns can end as multi-year intrusions."