Wireshark is a network protocol analyzer that is used to capture and decipher data packets in real time. It allows penetration testers and cybersecurity administrators to monitor and analyze network traffic to identify vulnerabilities and security issues. It supports multiple protocols such as TCP, UDP, HTTP, DNS, and TLS, making it a powerful tool for troubleshooting and security testing on local and remote networks. It can also be used to analyze attacks and detect suspicious activities such as data leaks and man-in-the-middle (MITM) attacks. The potential harms of this tool are that it can be used to spy on network traffic and intercept login credentials and sensitive information if encryption is not used. It can also be exploited to collect information about devices connected to the network and analyze data flow to target vulnerable systems. Attackers can also use it to decrypt unprotected communications, leading to data theft or more sophisticated attacks. To protect against these risks, it is recommended to encrypt all data sent over the network using secure protocols such as TLS and VPN. SSH keys should also be used instead of regular passwords to protect remote connections, in addition to activating the detection of suspicious tools on the network via intrusion detection systems (IDS) such as Snort or Zeek. It is also preferable to divide the network into secure zones to prevent an attacker from accessing all devices in the event that one of the systems is compromised.

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