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CybersecurityCybersecurity

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Act-of-War Clauses Cloud Cyber Insurance Coverage

By Kim S. Nash

 

Welcome back. Iran-linked hackers are targeting civilian businesses, raising the stakes for how insurers handle cyberwarfare claims.

Coverage terms can be ill-defined, ambiguous and open to interpretation, WSJ Pro's Angus Loten reports. Beyond overt warfare, many policies allow insurers to use any evidence that a data breach was done on behalf of a nation-state adversary to deny claims. Read our full story.

More news below.

 

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Read the report

 

More Cyber News

The college student—and his cat meme—who hunted the world’s biggest cyberweapon: A flurry of powerful attacks had seasoned internet experts baffled. Benjamin Brundage, a 22-year-old senior at the Rochester Institute of Technology, had a few tricks to help solve the mystery. (WSJ)

  • Malware lurking in shady smartphone apps and cheap off-brand household electronics has allowed operators of massive botnets to use people’s home and wireless network access for hacking sprees and other criminal activity.
  • You can check pretty quickly to see whether your home network is clean. Read how.

Wynn Resorts disclosed a breach affecting nearly 22,000 current and former employees and service providers, after an October 2025 hack of its human resources systems. "The threat actor has stated that all data has been deleted," the casino company said in a notification letter. Wynn didn't say whether it paid a ransom to the attackers or what kind of information was exposed. 

Cambodia is cracking down on online scam compounds with a new law passed Friday that provides for 10 years in prison and up to $250,000 in fines for people convicted in the most serious cases. (Reuters)

$707 Million

Amount of a budget cut the White House proposes for the Cybersecurity and Infrastructure Security Agency for fiscal 2027. That's about 30% of CISA's current funding of $2.4 billion. (Cybersecurity Dive)

 

About Us

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

 
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