Radian Capital, an investment firm, led a $15m Series A funding round in GreyNoise, a cyber security company analyzing internet scanning traffic, with participation from CRV, Inner Loop, Stone Mill Ventures and Paladin Capital. “We’re thrilled to invest and partner with GreyNoise, a company that has taken an innovative approach to tackling the enormous issue of mass exploitation attacks and internet noise. GreyNoise has created a category-defining new product that helps security teams to sort out irrelevant alerts and focus their time and energy on targeted and emerging threats. With applicability to almost any security organization, the market for this solution is enormous and growing quickly," Dave Sack, Radian Capital Principal.