Memory injection is a cyberattack technique where malicious code is directly inserted into a computer’s memory, rather than being saved as a file on the system. This allows attackers to execute harmful actions, such as stealing data or taking control of the device, while avoiding detection by traditional antivirus programs that scan for suspicious files. Because the code only exists temporarily in memory, it can be much harder to discover and remove, making memory injection a favored method for sophisticated cybercriminals.