Mark Butler has joined Qualys as its chief information security officer (CISO) Butler will advocate CISO needs for Qualyss customers as they work to achieve their digital transformation goals. The company provides cloud-based security and compliance solutions to 9,300 customers. Butler has more than 20 years of IT security experience and has worked with executive management, IT leadership and legal counsel to achieve visibility into new business opportunities and associated cyber risks. He has also held roles in global security consulting, independent technical research and comprehensive assessment services as well as several foundational security roles at H&R Block.”]