Upwind, which filters false security alerts in cloud apps so companies can focus on actual risks, raised $300M at a $3.8B valuation, up from $1.5B in January (Meir Orbach/CTech)

Meir Orbach / CTech: Upwind, which filters false security alerts in cloud apps so companies can focus on actual risks, raised $300M at a $3.8B valuation, up from $1.5B in January — The Israeli cloud security company was valued at $1.5 billion when it raised $250 million in January, and has since attracted fresh backing …