What is Sniffer?

A sniffer, also known as a packet analyzer, network analyzer, or protocol analyzer, is a software or hardware tool used to intercept and log network traffic. It captures data packets as they travel across a network, allowing users to examine the contents of the packets. Sniffers are commonly used for network troubleshooting, security analysis (identifying vulnerabilities or malicious activity), and monitoring network performance. However, they can also be misused to capture sensitive information like passwords or personal data if traffic is not properly encrypted.