Cloud security company Upwind today announced raising $250 million in a Series B funding round that brings the total raised by the company to $430 million and its valuation to $1.5 billion. The new investment round was led by Bessemer Venture Partners, with additional support from Salesforce Ventures and Picture Capital. The startup is also backed by Alta Park, Cerca Partners, Craft Ventures, Cyberstarts, Greylock, Leaders Fund, Penny Jar Capital, Swish Ventures, and TCV. Upwind offers a runtime-native cloud security platform that provides organizations with increased visibility into networks, APIs, and data flows. According to Upwind, amid a massive surge in agentic workflows, its solution can reduce noise and prioritize real risk, without impacting business speed. The new investment…