Discover essential IT security concepts, tools, and best practices to safeguard data and systems. This course introduces threats and attacks, encryption algorithms, and the three As of information security: authentication, authorization, and accounting. Explore network security solutions, from firewalls to Wifi encryption, and learn to integrate a culture of security into your organization or team. This is the fifth course in the Google IT Support Certificate, a series designed to prepare you for an entry-level IT support role.