I recently moved from Windows Server administration to Linux administration. In Windows I get used to practice that all critical and security updates are installed ASAP on their release. On Windows this can be done via few buttons with help of WSUS and SCCM.
When I moved to Linux I am very surprised that I see a 3rd Senior Linux administrator who does not care about updates at all. When I tried to find some central point of checking if my system is secure or not, like WSUS and SCCM - I couldn't find it.
What are best practices of ensuring that my Linux system is up to date and secure? What about 3rd party software installed on this system? How can I check that it's also secure?