How can security help to protect our potential information?

Hello, I got a job as a security system manager. As we all know, due to digitisation, there has been an increase in cyberattacks, malware, and data theft. All these criminal activities are rising day by day. As a manager, I want ideas on what tools and techniques I should use to safeguard the sensitive information of our business. How regularly do I check the security systems? How can I help to improve network security? How often is employee training required for the betterment of the business and to safeguard secrets and potential information? It would be appreciated if someone from this field gave their suggestions.