What is a common feature of both signature-based and anomaly-based scanners?

Both signature-based and anomaly-based scanners are designed with the primary goal of detecting and responding to malware threats. Signature-based scanners work by looking for known patterns or signatures of malware that have been previously identified. In contrast, anomaly-based scanners establish a baseline of normal activity and flag any deviations from this baseline, which may indicate a potential threat.

The unifying characteristic of these two types of scanners is their focus on identifying malicious activity to protect systems and networks. This makes option C the correct choice, as both methodologies aim to detect malware in order to mitigate risks to security.

The other options do not accurately capture the shared functionalities of these scanners. For instance, achieving a 0% false alarm rate is unrealistic in practical applications; both types of scanners may generate false positives due to the nature of their detection methods. While both types can operate independently without user input, their operation typically involves some degree of user configuration or oversight, making independence from user input not a defining feature. Lastly, focusing solely on network traffic is not accurate, as both types of scanners can also analyze various other data points, including files and behaviors in a system context.