Understanding malware & other threats - Microsoft Defender for …
Jul 24, 2024 · Understanding malware & other threats Malware is a term used to describe malicious applications and code that can cause damage and disrupt normal use of devices. Malware can allow …
How malware can infect your PC - Microsoft Support
Learn how malware can infect your PC from sources such as spam email, removable drives, potentially unwanted software, and suspicious websites.
How to start a scan for viruses or malware in Microsoft Defender
If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.
Microsoft resources and guidance for removal of malware and viruses
Describes and provides links to several Microsoft security resource centers and tools that can help you protect your system from malware and from viruses.
Prevent malware infection - Microsoft Defender for Endpoint
Apr 24, 2024 · Learn steps you can take to help prevent a malware or potentially unwanted software from infecting your computer.
Getting started with anti-malware in Microsoft Defender
Malware is mal icious soft ware and it comes in a lot of different varieties. Viruses, ransomware, spyware, and more are all types of malware. Microsoft Defender has powerful built-in features that …
How Microsoft names malware - Unified security operations
May 14, 2025 · Understand the malware naming convention used by Microsoft Defender Antivirus and other Microsoft antimalware.
Stay Protected With the Windows Security App - Microsoft Support
The Windows Security app is a comprehensive security solution integrated into Windows, designed to protect your device and data from various threats. It includes features such as Microsoft Defender …
Virus and Threat Protection in the Windows Security App
Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.
Protect yourself from malware and phishing - Microsoft Support
Protect yourself from malware and phishing Malware is short for malicious software, a program or file that is designed to specifically damage or disrupt a system, such as a virus, worm, or a Trojan horse.
Microsoft security help and learning
Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.
Explore malware and threat protection - Training | Microsoft Learn
In this module, you will learn about malware and common network-related security threats and the steps that you can take to mitigate them.
Remove specific prevalent malware with Windows Malicious Software ...
Dec 9, 2025 · Discusses the release of the Malicious Software Removal Tool (MSRT) to help remove specific prevalent malicious software from Windows-based computers.
Worms - Microsoft Defender for Endpoint | Microsoft Learn
Oct 29, 2024 · How to protect against worms Enable Microsoft Defender Antivirus in Windows 10. It provides real-time protection against threats and detects and removes known unwanted software. In …
Exploits and exploit kits - Microsoft Defender for Endpoint
May 31, 2024 · Exploits are often the first part of a larger attack. Hackers scan for outdated systems that contain critical vulnerabilities, which they then exploit by deploying targeted malware. Exploits often …
Windows Defender tags Powershell as a Trojan - Microsoft Q&A
3 days ago · This can help identify and remove any additional malware. Check for Updates: Ensure that your Windows operating system and Windows Defender are fully updated. Sometimes, updates can …
newtab.art malware - Microsoft Q&A
6 days ago · It provides real-time protection and can help detect and remove malware. You can run a full scan to identify and remove any threats. Safe Mode: Restart your computer in Safe Mode. This will …
Anti-malware protection for email In Microsoft 365 - Microsoft …
Jul 28, 2025 · Admins can learn about anti-malware email protection and anti-malware policies that protect against viruses, spyware, and ransomware in Microsoft 365.
Resolve False Positive Malware Detections - SharePoint
Aug 13, 2025 · False positive detections of malware in Microsoft SharePoint occur when a safe file is mistakenly identified as malware by Microsoft scanning engines. This article explains how to identify …
While on the internet, individual tabs are opening on their own.
2 days ago · Malware or Adware: It's possible that your system may be infected with malware or adware that is causing these tabs to open. Running a full system scan with a reputable antivirus program can …
Troubleshoot problems with detecting and removing malware
Solve problems with detecting and removing malware with Windows Security, including incomplete scans, detection errors, and persistent malware.
Rootkits - Microsoft Defender for Endpoint | Microsoft Learn
Jul 24, 2024 · Rootkits may be used by malware authors to hide malicious code on your computer and make malware or potentially unwanted software harder to remove.
How Microsoft identifies malware and potentially unwanted applications
Mar 13, 2025 · Learn how Microsoft reviews software for privacy violations and other negative behavior, to determine if it's malware or a potentially unwanted application.
Is Windows Security (Microsoft Defender) sufficient for Windows 10/11 ...
Dec 28, 2025 · For most people using Windows 10 or 11, Windows Security (Microsoft Defender Antivirus) is sufficient for everyday use. Over the past several years it has matured into a full …
HOW TO DELETE OR HIDE FROM SHARED UNKNOWN PDF FILE IN …
3 hours ago · I received an unknown PDF file on 12.21.25 titled "GET BITCOIN 3767" from an unknown sender that is not on my contact list. I am unable to delete or hide this shared file. How can I delete …