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Six American companies (identities protected in public records)

The person at the center of this case

Six American companies (identities protected in public records)

Case
#635
SourceFBI WantedUpdated Mar 15, 2026
Federal Bureau of Investigation (FBI); U.S. Attorney's Office, Western District of Pennsylvania
Cold Case · Open - Fugitive Wanted
12 years waiting · since 2014

SUN KAILIANG

Justice for Six American companies (identities protected in public records) — 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 Unit 61398 (Third Department, Second Bureau, Third Office) - what was his specific technical expertise and role in the conspiracy?

🔍
evidence
Lead #2

Malicious emails and remote computer control activities attributed to Sun - what infrastructure and tools were used to conduct the attacks?

💡
clue
Lead #3

Trade secrets stolen included nuclear plant design specifications - which American companies were targeted and what sensitive information was compromised?

On May 1, 2014, a federal grand jury in Pennsylvania indicted five People's Liberation Army officers, including Captain Sun Kailiang, for a sophisticated cyber espionage campaign targeting six American companies. The conspiracy involved unauthorized computer access, theft of trade secrets including nuclear plant designs, and identity theft conducted between 2006 and 2014. Sun Kailiang remains a fugitive sought by the FBI for his role in sending malicious emails and controlling victim computers during this state-sponsored cyber attack.

Case
#635
SourceFBI WantedUpdated Mar 15, 2026
Federal Bureau of Investigation (FBI); U.S. Attorney's Office, 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.

👤
person
Lead #4

Four other PLA officers were indicted alongside Sun Kailiang - have any been apprehended or extradited?

⏰
timeline
Lead #5

Eight-year conspiracy period (2006-2014) - what triggered the investigation and how was Sun Kailiang's involvement identified?

Have information about any of these leads?

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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

🕵️
2006-01-01

Alleged conspiracy period begins

Computer intrusion campaign against American companies allegedly begins

🕵️
2014-05-01

Federal indictment issued

Grand jury in Western District of Pennsylvania indicts five PLA officers including Sun Kailiang on 31 criminal counts

Key Locations
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Case Information

Incident:January 1, 2006
Last Updated:May 9, 2026

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Case Information

Incident:January 1, 2006
Last Updated:May 9, 2026