A company's proprietary application is critical for daily operations, but it runs on an operating system that no longer receives vendor updates. The company's IT team is currently unable to upgrade the system or migrate the application due to compatibility issues. What is the most effective risk mitigation strategy the IT team should implement to secure the legacy system against potential threats?
Implement network segmentation and restrict the system's network connectivity to essential services
Conduct regular security audits on the system to ensure compliance with security policies
Increase security monitoring specifically targeting the unsupported system to detect anomalies
Encourage users to employ stronger passwords for system access
Implementing network segmentation and limiting the legacy system's connectivity to essential services is the correct answer. This approach reduces the risk of attacks from both internal and external threat vectors, as it would prevent the potentially compromised system from affecting unrelated parts of the network. While increasing security monitoring is a useful tactic, it does not directly mitigate the exposure of the legacy system to threats. Conducting regular security audits on the system is a good practice, but it does not provide real-time protection against threats. Encouraging the use of strong passwords is important but does not address the specific risks associated with an unsupported operating system.
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