1. Took only a year to complete design and build of vulnerability management system and account management system covering more than 30,000 hosts in the whole group, successfully fixed more than 5000 vulnerabilities annually, with 0 problems, gradually solve the historical burden of many accounts management problems. Promote the implementation of security baseline policies.2. Complete cybersecurity compliance work efficiently with less effort compare to the past, including classified security protection, government agency cybersecurity inspection, external audit and ISO 27000 Certification and so on.3. Based on my experience and knowledge, overcome a lot of difficulties, finally choose the world-famous vulnerability management solutions Tenable.SC. After deployment and implementation, effectively improve the passive situation of vulnerability management.4. Research and study new technologies security related technology, including the security of Hybrid Cloud and Cloud native.5. Security incident response, investigate and review.