AI and cloud cybersecurity startup Upwind Security raised $400M led by Bessemer at a $3.8B valuation, up from $1.5B in January, for $830M in total funding (Marissa Newman/Bloomberg)

Marissa Newman / Bloomberg: AI and cloud cybersecurity startup Upwind Security raised $400M led by Bessemer at a $3.8B valuation, up from $1.5B in January, for $830M in total funding — Upwind Security, a San Francisco-based startup offering cybersecurity for artificial intelligence and cloud…