Latest cybersecurity reporting from selected sources.

Also, Colt Services Outage Persists, Finland Charges Americans in Vastaamo HackThis week, Microsoft hit RaccoonO365, Colt Technology Services, Finland charged a U.S. citizen in Vastaamo hack. RevengeHotels hackers used AI, Meta can't overturn a privacy case verdict. Chinese hackers unleashed spear phishing emails. Prosper confirmed a data breach, as did Kering fashion houses.

London-based multinational takes customer portal and Voice API platform offline as 'protective measure' following breach Multinational telco Colt Technology Services says a "cyber incident" is to blame for its customer portal and other services being down for a number of days.…

Also: UnitedHealth Breach Now Affects Over Half of US PopulationIn this week's update, ISMG editors discussed two major stories shaking the tech and cybersecurity worlds - China's AI leap with DeepSeek, a new open-source bot that wiped $600 billion off of Nvidia's value, and an update on the massive UnitedHealth breach, which now affects 190 million people.