If you did not intentionally install J-Link software, run a full scan with Windows Defender and a secondary scanner like Malwarebytes or HitmanPro to remove the potential infection.
The J-Link software (running via the JLink_x64 libraries) implements a mechanism that allows the host PC to read memory from the target device , without halting the application. jlinkx64sys
This article dives deep into what jlinkx64sys is, why it matters for modern development, how to set it up on your x64 workstation, and advanced troubleshooting techniques that separate novices from experts. If you did not intentionally install J-Link software,