Backdoor A backdoor is a hidden way in. Once placed or opened, it lets the attacker return to the machine — with no password, no authorization and no entry in the ordinary records. A backdoor can be opened by malware while it runs, but it can equally be a user account nobody watches, or web shell access left on a server.

Rootkit A rootkit is defined by persistence and invisibility. It gives the attacker privileged access while concealing malicious processes, files and connections from s …

Supply Chain Attack A supply chain attack does not always aim at the final victim directly. The attacker compromises software, hardware, a supplier, a build process or an update mechanism before the product or service reaches the user. The victim then carries the problem into their own environment, because it comes from a source they trust.

Fileless malware … icuous file. A restart clears it from memory, but persistence techniques bring it back.