Hello. A U.S. intelligence official has alleged wrongdoing by Director of National Intelligence Tulsi Gabbard in a whistleblower complaint that is so highly classified it has sparked months of wrangling over how to share it with Congress, according to U.S. officials and others familiar with the matter.

A mystery reminiscent of a John le Carré novel is swirling around the complaint, which is said to be locked in a safe. Disclosure of its contents could cause “grave damage to national security,” one official said. Read the full WSJ story.

More news below. 

• The company posted $1.41 billion in sales for the final three months of last year, a year-over-year gain of 70%. Net income reached $609 million—another quarterly record. The numbers reflect strong demand for its technology even as its role in aiding the Trump administration’s deportation agenda has come under tougher scrutiny. 

• Immigration and Customs Enforcement has contracts with Palantir to use its technology in applications to find and track immigrants the agency is targeting for removal from the U.S.
• “We have lots of debates internally about what we should do, how we should do it. But from the beginning we have stuck to our very strong values of expanding what we believe is the noble side of the West,” Karp said. (WSJ)

Suspected Chinese hackers planted surveillance malware in a popular open-source coding tool in mid-2025, cybersecurity researchers at Rapid7 said Monday. The author of the tool, called Notebook++, put out an update in December to fix vulnerabilities. 

• The Chinese group spied on the activities of Notebook++ users for about six months, Rapid7 said. (CyberScoop)

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.