Adware:Adware (or spyware) is a small program that is designed to show advertisements (in various form and degrees of intrusiveness) on your computer. It often reports personal information back to its owners. As a result your sense of privacy can be violated.
NT Logon Capture is a specific malware threat that automatically runs on every Windows startup and records computer logon user names and passwords. Gathered information is logged to a file. NT Logon Capture must be manually installed.
Technical details (How to remove NT Logon Capture(pop up))