Within this paper we describe the impact of development tools on the safety and security of systems. By example, we show the tool risks for the system safety and security. In addition, we describe the requirements from safety and security standards and compare them with respect to their ability to manage the risks. While safety standards are quite detailed and effective to reduce and handle the tool risks, the security standards are quite vague and leave it up to the tool provider and tool user if they want to reduce the tool risks or if they want only to handle them. In this paper we present also methods that reduce the risks of security attack.