Data sniffing, or packet sniffing, is the covert interception and analysis of data as it moves across a network. While some sniffers serve legitimate purposes (for example, network troubleshooting by administrators), attackers use sniffers to capture sensitive information such as usernames, pass...
Source: [Dev.to](https://dev.to/octowatch/data-sniffing-threats-to-business-and-5-ways-to-defend-22k6)