A reverse shell is a type of network connection in which a command shell is executed on a remote machine, and the input and output of the shell are transmitted over the network back to the local machine. This allows a user on the local machine to execute commands on the remote machine and receive the output of those commands.

GoogleDorker is a command-line-based Google Dorking tool designed for bug hunters and penetration testers. It enables users to perform in-depth searches using Google Dorks to gather information about their targets. Utilizing Google's provided free APIs, GoogleDorker empowers cybersecurity professionals to conduct comprehensive reconnaissance and vulnerability assessment.

Nmap is a security auditing tool used in the security field to actively enumerate a target system/network. It is one of the most extensively used tools by network administrators and conversely attackers for reconnaissance (enumeration), the first step in the 5 phases of hacking

TCP-ACK is a third step of the TCP 3-Way Handshake process (SYN, SYN-ACK, ACK). In TCP-ACK, the client acknowledges the response of the Server, and establish a connection to proceed with the data transfer and any other communication processes.