Sentra, the New York data security company founded in 2021, closed a $150 million Series C led by Capital One Ventures on November 4. Its last round was a $50 million Series B led by Key1 Capital in April 2025. No valuation was given. The company has about 210 employees. Capital One leading is a signal on its own. Banks are among the biggest buyers of data loss prevention, and … [Read more...] about Sentra Raises 150 Million Dollars Led by Capital One Ventures to Control What AI Agents Can Reach in Company Data