Hello. The U.S. is stepping up its intelligence-gathering efforts regarding Greenland, drawing America’s spying apparatus into President Trump’s campaign to take over the island, according to people familiar with the effort.

The directive asked agencies, whose tools include surveillance satellites, communications intercepts and spies on the ground, to identify people in Greenland and Denmark who support U.S. objectives for the island. Read the full story. 

Also today: 

Factories, order processing disrupted at medical-tech company Masimo after cyber incident

AI demand pushes up Datadog earnings 

U.S. issues guidance for securing critical infrastructure tech

And more

• Masimo said its cloud-based systems weren't affected. 
• Separately, Masimo said Tuesday it is getting out of a failed foray into the consumer-audio business with a deal to sell the unit for about $350 million to Harman International, a Samsung Electronics subsidiary.

With critical infrastructure continuously under threat, the Cybersecurity and Infrastructure Security Agency on Tuesday put out more guidance on securing operational technology systems. The guide includes several detailed resources. The main points boil down to: 

1. Remove OT connections to the public internet.

2. Change default passwords immediately and use strong, unique passwords.

3. Secure remote access to OT networks.

4. Segment IT and OT networks.

5. Practice and maintain the ability to operate OT systems manually.

Datadog, a cloud-security provider, raised its full-year earnings forecast, citing a surge in the adoption of AI, whose heavy processing needs often result in companies buying more cloud computing power. Datadog put fiscal 2025 revenue at $3.22 million to $3.24 million, up from $3.18 million to $3.2 million. (Reuters)

San Francisco-based Doppel raised $35 million in a Series B round led by Bessemer Venture Partners, bringing the total amount raised to $54.4 million. Doppel uses AI to help companies guard against social-engineering attacks. 

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.