Is this email difficult to read? View it in a web browser. ›

The Wall Street Journal ProThe Wall Street Journal Pro

CybersecurityCybersecurity

Sponsored by Zscaler logo.

Insider Threats Are Sometimes Unpredictable, Often Damaging

By Kim S. Nash

 

Hello. Two U.S. enforcement actions this week highlight insider security threats linked to very different motivations.

A federal jury on Wednesday convicted a former U.S. Navy machinist of espionage charges for selling secret information about his ship and others to a Chinese intelligence officer. The sailor, stationed in San Diego, was paid $12,000 for the material, including photos and videos, over 18 months ending in 2023.

“China continues to aggressively target U.S. military members with and without clearances,” said Assistant Director Roman Rozhavsky of the FBI’s Counterintelligence Division.

In a second case, a Chinese national living and working in Houston was sentenced Thursday to four years in federal prison for detonating malware on his former employer’s network in 2019, after his job responsibilities were reduced in a reorganization at the Ohio business.

In addition to crashing computers and deleting files, he set up a kill switch that would lock all employees out of the company’s systems if his credentials were disabled. The company suffered hundreds of thousands of dollars in losses, the Justice Department said. 

More news below.

 

‏‏‎ ‎

CONTENT FROM: Zscaler
Secure your enterprise against AI-fueled cyber threats

AI-driven cyberattacks are bypassing firewalls and VPNs. WSJ's Ms. Leighton-Jones and Zscaler CEO, Mr. Chaudhry, discuss how Zero Trust + AI protect enterprises and power secure innovation in the AI era.

Watch the 2-minute video

 

More Cyber News

PHOTO: RUI VIEIRA/ZUMA PRESS

Virginia medical imaging company Radiology Associates of Richmond faces a consolidated class action lawsuit from patients whose healthcare, personal and financial information was breached in a 2024 cyberattack. More than 1.4 million adults and children were affected by the breach and at least 10 suits were filed soon after the company began notifying victims in May 2025. 

  • The cases were consolidated and a new complaint filed this week in federal court in Richmond, Va. (Richmond Biz Sense)

Immigration law firm breached. Atlanta-based Kuck Baxter Immigration disclosed that extensive client data was compromised starting in early 2024, including personal, financial, medical, mental-health and biometric information. The firm didn't say how many people were affected. It is offering one year of credit monitoring. 

PHOTO: PATRICK SEMANSKY

/AP

Anne Neuberger, former Deputy National Security Advisor for Cyber and Emerging Technology in the Biden administration, has joined investment firm Andreessen Horowitz. As a senior advisor, Neuberger will focus on cybersecurity and AI for infrastructure and defense, she said on LinkedIn.

 

About Us

The WSJ Pro Cybersecurity team is Deputy Bureau Chief Kim S. Nash and reporters Angus Loten, James Rundle and Catherine Stupp. Follow us on X @WSJCyber. Reach the team by replying to any newsletter you receive or by emailing Kim at kim.nash@wsj.com.

 
Share this email with a friend.
Forward ›
Forwarded this email by a friend?
Sign Up Here ›
 
Desktop, tablet and mobile. Desktop, tablet and mobile.
Access WSJ‌.com and our mobile apps. Subscribe
Apple app store icon. Google app store icon.
Unsubscribe   |    Newsletters & Alerts   |    Contact Us   |    Privacy Notice   |    Cookie Notice
Dow Jones & Company, Inc. 4300 U.S. Ro‌ute 1 No‌rth Monm‌outh Junc‌tion, N‌J 088‌52
You are currently subscribed as [email address suppressed]. For further assistance, please contact Customer Service at pro‌newsletter@dowjones.com or 1-87‌7-975-6246.
Copyright 2025 Dow Jones & Company, Inc.   |   All Rights Reserved.
Unsubscribe