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CybersecurityCybersecurity

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AI Cyber Startup Kai Raises $125 Million

By Kim S. Nash

 

Hello. Kai, an AI-powered cybersecurity startup, has raised $125 million in a combined seed and Series A round.

The company is developing an integrated AI cyber platform, hoping to outrun competitors that are buying AI tools to bolt onto existing products, CEO Galina Antova tells my colleague Angus Loten. Read more.

Other news: 

  • Anthropic sues over security-threat designation
  • OpenAI buys AI security company Promptfoo
  • Russia-linked hackers target Dutch officials
  • Ericsson employees and customers breached
  • Fine in trade-secrets case after 20 years
  • Average ransom demands
 

‏‏‎ ‎

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More Cyber News

PHOTO: AP/REUTERS

Anthropic filed a lawsuit Monday against the Trump administration for designating the artificial-intelligence company a security threat and trying to cancel its federal contracts. The company listed the Defense Department, Defense Secretary Pete Hegseth, a host of federal agencies and many other administration officials as defendants. (WSJ)

  • Thirty-seven AI researchers at competitors OpenAI and Google filed a brief urging the court to side with Anthropic, highlighting how the fight has rippled through Silicon Valley.
  • Separately, OpenAI said it acquired Promptfoo, which makes tools for developing secure AI systems and assess risk in large language models. Terms of the deal weren't disclosed.

Suspected Russian hackers are targeting the WhatsApp and Signal accounts of Dutch government and military officials, the Dutch Ministry of Defence said. Most frequently, the attack starts with a fake Signal support chatbot to trick targets into revealing passcodes. 

  • "The Russian hackers likely gained access to sensitive information through this campaign," the ministry said, without providing details. 

Ericsson Inc., the U.S. unit of Swedish networking and cloud provider Ericsson, is notifying employees and customers that a breach at a tech services provider in April 2025 compromised their personal data. Ericsson didn't name the provider or say how many people were affected in total. 

  • In a notice to Texas state regulators, the company said more than 4,300 residents were affected.

Twenty years later: Chinese telecom company Hytera Communications must pay a fine of $50 million for conspiring to steal trade secrets from U.S. rival Motorola Solutions, a federal judge in Chicago ordered.

  • The scheme began in 2006, when Hytera recruited Motorola employees and induced them to steal material about Motorola’s digital mobile radio technology, the Justice Department said Monday. 
  • An additional $214 million in restitution will be offset by payments made in a related civil case.
$2,331,250

Average ransom demanded last year by RansomHub hackers, according to cyber insurer Coalition, which analyzed data from more than 100,000 policyholders in the U.S., Australia, Canada, Germany and the U.K.

Ransomware gang Qilin demanded $1,167,187, on average, and Akira $925,666. 

 

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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