A version control system (VCS) is a software tool that helps developers manage changes to source code over time. VCSs allow developers to track changes, collaborate with others, and revert to previous versions of code. Examples of VCSs include Git and Subversion. Watch our video Cybersecurity is the practice of protecting computer systems, networks, and data from unauthorized access, theft, or damage. Cybersecurity technologies are used to identify and mitigate cyber threats, such as malware, phishing attacks, and data breaches. Popular cybersecurity platforms include McAfee, Norton, and Palo Alto Networks.