MaxCDN is joining new security startup Stackpath. Stackpath in turn announced that it has raised $150 million in funding from private equity firm ABRY Partners. Stackpath, at the moment, does not offer any services itself yet but is expected to launch multiple services like monitoring, storage, compute and video streaming. The first service they’ll launch Secure Content Delivery (SCD) with anti-DDOS and a web application firewall (WAF) built in to every plan.