CERT researches, analyzes, and develops technology and training aimed at helping administrators secure their systems and networks. Building on its long history of vulnerability research, CERT is involved with vulnerability remediation, publishing findings in the CERT Knowledgebase for registered users and in US-CERT vulnerability notes. Our research in survivable systems engineering advances knowledge in fields such as information assurance for systems of systems, computational engineering for software and systems assurance, and security requirements engineering. Our work in network situational awareness produces engineering solutions and research approaches for analyzing broad network activity, including open-source tools such as SiLK and AirCERT. CERT also conducts training and certification courses for systems and network administrators in areas such as information security, incident handling, and forensics.