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Final answer:The questionconcernscommon security issues in computing, which include weak passwords, firewall breaches, and system vulnerabilities. Network congestion pertains to performance, not security.Explanation:The question asks aboutcommon securityissues in computing. These can include A) Weak passwords, B) Firewall breaches, and C) System vulnerabilities. Weakpasswordscan easily be guessed or cracked, thereby providing unauthorized access to systems. Firewall breaches are instances where malicious entities manage to bypass the protective firewall, thus compromising the integrity of the system. System vulnerabilities are weaknesses in a system's design or implementation that can beexploitedto violate its intended behavior and gain unauthorized access or control.D) Network congestionis not a security issue per se, but a performance issue that may affect the speed and efficiency of data transfer over a network. It should be treatedseparatelyfrom the aforementioned security issues.Learn more about Computer Security here:brainly.com/question/32510551#SPJ11...