On the other hand, hardware keyloggers are physical devices that are typically inserted between a keyboard and a computer, such as a USB adapter or an inline connector. These devices record keystrokes directly from the keyboard’s signal, storing the data internally or transmitting it wirelessly (Krebs. 2015). Unlike software keyloggers, hardware variants are harder to detect as they do not rely on software that can be scanned by antivirus programs. Both types of keyloggers serve the same primary purpose—capturing keystrokes—but differ in their implementation, detection methods, and potential use cases.