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Six American companies targeted in cyber espionage conspiracy

The person at the center of this case

Six American companies targeted in cyber espionage conspiracy

Case
#635
SourceFBI WantedUpdated Mar 15, 2026
Western District of Pennsylvania (jurisdiction); targets across United States
Federal Bureau of Investigation (FBI); U.S. Department of Justice; Western District of Pennsylvania
Cold Case · Open
12 years waiting · since 2014

SUN KAILIANG

Justice for Six American companies targeted in cyber espionage conspiracy — the trail went cold in 2014, but the truth hasn't.

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Key leads to think about

🎯
suspect
Lead #1

Sun Kailiang held rank of captain in PLA's Third Department, General Staff Department, Unit 61398; was observed sending malicious emails and controlling victim computers

🔍
evidence
Lead #2

Stolen proprietary information included email exchanges among company employees and technical specifications for nuclear plant designs

📍
location
Lead #3

Six American companies targeted during negotiations or joint ventures with Chinese state-owned enterprises; specific corporate identities and locations not disclosed in indictment

On May 1, 2014, a federal grand jury in Pennsylvania indicted five People's Liberation Army officers, including Captain Sun Kailiang, for a coordinated cyber espionage campaign targeting six American companies. Sun and his co-conspirators allegedly penetrated corporate networks to steal proprietary information and trade secrets, including technical specifications for nuclear plant designs, while the companies were engaged in sensitive negotiations or legal disputes with Chinese state-owned enterprises. The case remains significant as a documented example of state-sponsored cyber theft, and locating Sun—believed to be in China—remains an ongoing priority for federal law enforcement.

Case
#635
SourceFBI WantedUpdated Mar 15, 2026
Western District of Pennsylvania (jurisdiction); targets across United States
Federal Bureau of Investigation (FBI); U.S. Department of Justice; Western District of Pennsylvania

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More leads to consider

Beyond the top three above — each detail below could be the thread that pulls this case open.

💡
clue
Lead #4

Sun's current location and whereabouts unknown; believed to remain in China outside U.S. jurisdiction

Have information about any of these leads?

Even the smallest detail could be the key to solving this case.

Official wording

Source Narrative

Conspiring to Commit Computer Fraud; Accessing a Computer Without Authorization for the Purpose of Commercial Advantage and Private Financial Gain; Damaging Computers Through the Transmission of Code and Commands; Aggravated Identity Theft; Economic Espionage; Theft of Trade Secrets Caution: On May 1, 2014, a grand jury in the Western District of Pennsylvania indicted five members of the People’s Liberation Army (PLA) of the People’s Republic of China (PRC) for 31 criminal counts, including: conspiring to commit computer fraud; accessing a computer without authorization for the purpose of commercial advantage and private financial gain; damaging computers through the transmission of code and commands; aggravated identity theft; economic espionage; and theft of trade secrets. The subjects, including Sun Kailiang, were officers of the PRC’s Third Department of the General Staff Department of the People’s Liberation Army (3PLA), Second Bureau, Third Office, Military Unit Cover Designator (MUCD) 61398, at some point during the investigation.

The activities executed by each of these individuals allegedly involved in the conspiracy varied according to his specialties. Each provided his individual expertise to an alleged conspiracy to penetrate the computer networks of six American companies while those companies were engaged in negotiations or joint ventures or were pursuing legal action with, or against, state-owned enterprises in China.

They then used their illegal access to allegedly steal proprietary information including, for instance, e-mail exchanges among company employees and trade secrets related to technical specifications for nuclear plant designs. Sun, who held the rank of captain during the early stages of the investigation, was observed both sending malicious e-mails and controlling victim computers.

Timeline of Events

🕵️
2014-05-01

Federal Grand Jury Indictment

Grand jury in Western District of Pennsylvania indicted five PLA officers, including Sun Kailiang, on 31 criminal counts including computer fraud, unauthorized computer access, economic espionage, and theft of trade secrets

Case Information

Incident:May 1, 2014
Last Updated:April 29, 2026

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Case Information

Incident:May 1, 2014
Last Updated:April 29, 2026