inpoutx64 is a filename pattern commonly seen in 64-bit low-level driver or helper software, often tied to hardware access, peripheral control, or legacy utility functions. It is not inherently malicious; in many environments it belongs to legitimate device software, diagnostics, or customization tools.
In cyber security, names like this matter because driver-layer components run close to the operating system and can affect stability, privilege boundaries, and attack surface. During triage, defenders may search for inpoutx64 to identify third-party software that could trigger crashes, interfere with updates, or persist through startup hooks. Attackers may also take advantage of similar driver-level components, because kernel-adjacent software can be abused for stealth, disruption, or bypassing controls. Seeing the filename is a clue to investigate the associated driver, vendor, signing status, and installed hardware utilities.