Which tool is commonly used to detect data exfiltration attempts by insiders?

Nuix Adaptive Security is particularly effective for detecting data exfiltration attempts by insiders due to its focus on protecting sensitive data and monitoring user behavior. This tool leverages advanced analytics and machine learning to identify anomalies in data access and usage patterns, making it adept at recognizing unauthorized data transfers or suspicious activities indicative of data exfiltration.

In environments where insiders may pose a risk, this tool can help security teams proactively monitor for unusual activities that could indicate an attempt to steal or improperly transfer sensitive information. Its capabilities go beyond just monitoring network traffic; it encompasses user behavior analytics, which is crucial for identifying insider threats.

Other tools mentioned, such as Wireshark, primarily function as packet analyzers and are better suited for network traffic analysis rather than focused on insider threat detection. Microsoft Baseline Security is a tool aimed at establishing security best practices rather than actively monitoring for data exfiltration. Telnet, being a simple protocol for remote communication, does not provide functionalities that are oriented towards security monitoring or detection of data exfiltration activities. Thus, Nuix Adaptive Security stands out as the best option among those listed for this specific purpose.