.deb and .rpm packages are file formats used to distribute and install software on Linux systems. The .deb format is primarily used by Debian-based distributions like Ubuntu, while .rpm is used by Red Hat-based distributions such as Fedora and CentOS. These packages contain the software’s binaries, metadata, and installation instructions. Using package managers like apt for .deb and yum or dnf for .rpm, users can easily install, update, or remove software securely. Proper handling of these packages is crucial in cybersecurity, as installing untrusted packages can introduce vulnerabilities or malicious software into a system.