When I checked a Windows 10 system to ensure that the Windows 7 backup program that is scheduled to perform weekly backups of the system was functioning properly, I found that the last successful backup occurred on November 11, 2018. When I clicked on "More information" to determine the cause of the weekly backups failing, I saw the message "Operation did not complete successfully because the file contains a virus or potentially unwanted software." So I opened the Windows Security application by clicking on the Windows Start button, then selecting Settings, then Update & Security, then Windows Security. I then clicked on Virus & threat protection and selected Protection history, which showed an entry of "Remediation incomplete" for the backup that ran on February 16, 2020. The issue encountered was listed as "servere." I clicked on the downward-pointing arrowhead next to "severe" which showed the following for the malware detected:
| Threat detected: | Trojan:Win32/Nymaim |
| Alert level: | Severe |
| Date: | 2/16/2020 10:46 PM |
| Category: | Trojan |
| Details: | This program is dangerous and executes commands from an attacker. |
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