San Francisco-based web security company PerimeterX has grabbed $43 million in Series C funding.

With the net aid, PerimeterX will enhance its sales and marketing to push its revenue pedal and scale the company as well as protecting web applications from bot attacks.

U.S. venture capital firm Scale Venture Partners led the round, with participation from Adams Street Partners, Canaan Partners, Vertex Ventures and Data Collective, bringing total funding to $77 million.

As part of the round, Scale will join PerimeterX’s board, under the terms of the deal.