What are the basic systems security measures? Explain.

System security refers to techniques for ensuring that data stored in a computer cannot be read or compromised by any individuals without authorization. Basic System Security Measures apply to all systems regardless of the level of their System Classification and must meet certain basic parameters like: Password Protection: Systems must be configured to require that all accounts and resources must be protected by passwords which meet certain requirements like maximum and minimum character limit, must include alphabet, number and special character, must be changed at least once per year etc. Software Updates: Systems must be configured to automatically update operating system software, server applications (web server, mail server, database server, etc.), client software (web browsers, mail clients, office suites, etc.), and malware protection software (antivirus, anti-spyware), etc. Firewall: Systems must be protected by a firewall that allows only those incoming connections necessary to fulfill the business need of that system. Malware Protection: Systems must have antivirus and anti-spyware software installed and it must be configured to automatically scan and update.