How to check suspicious processes in Windows 11
Learn how to review running processes in Windows 11, identify warning signs, and investigate suspicious activity without guessing from a process name alone.
Use Task Manager for the first look
Press Ctrl + Shift + Esc to open Task Manager. The Processes tab shows running apps and background processes along with CPU, memory, disk, and network usage. The Details and Services views can provide additional context.
A strange name is not proof of malware
Do not treat an unfamiliar process name as automatic evidence of infection. Look for context: where the executable came from, whether its resource or network behavior is unusual, whether it appeared unexpectedly, and whether other security evidence supports concern.
Investigate patterns, not one isolated signal
A useful investigation can connect process activity with network connections, startup behavior, services, scheduled tasks, persistence evidence, Defender/Firewall status, and recent system changes. Sentinel AI is built to correlate that kind of Windows evidence and preserve investigation history rather than forcing the user to interpret one raw list at a time.
Where Sentinel AI fits
Sentinel AI is a Windows security suite built around continuous monitoring, investigation, evidence correlation, containment, quarantine, remediation, optimization, and clear guidance. It works alongside Microsoft Defender rather than replacing the antivirus engine. Defender remains responsible for antivirus and antimalware scanning; Sentinel adds the broader investigation and response workflow around Windows system and security evidence.
View Sentinel AI in Microsoft Store
Frequently asked questions
Does high CPU usage mean a process is malware?
No. High resource use can have many legitimate causes. Treat it as a clue that may deserve investigation, not proof of malware.
Can Task Manager show running processes?
Yes. Task Manager shows apps and background processes and their resource usage, and it includes additional Details and Services views.
What does Sentinel add to process investigation?
Sentinel AI is designed to correlate process evidence with other system and security signals, preserve investigation history, and support verified containment or remediation when appropriate.
Last reviewed: September 6, 2026.