How to recover a hacked or compromised Microsoft account
Learn how to recover a hacked or compromised account, what to do next, and how to prevent your account from being compromised in the future.
Secure your account if you think you’ve been hacked
If you think your Microsoft account has been hacked, find out how to secure your account and check for unauthorized activity.
What happens if there's an unusual sign-in to your account
Learn what to do if your username and password have stopped working. If you sign in to your account while traveling or if you install a new app that signs in with your account, you may get an alert. We …
Keep your computer secure at home - Microsoft Support
Keeping your computer secure helps you avoid malware and direct hacking attempts designed to steal your personal information. Here are some ways you can help reduce your online risk when you use …
Microsoft security help and learning
Get started with Microsoft Defender identity theft monitoring. Criminals are constantly trying to trick you into revealing your personal information. Learn to spot scams. Attackers will send you fake emails …
DoS and DDoS attacks on Xbox
Find answers to FAQs about denial of service (DoS) and distributed denial of service (DDoS) attacks when you're using the Xbox network on your Xbox console.
National Public Data breach: What you need to know
In early 2024, National Public Data, an online background check and fraud prevention service, experienced a significant data breach. This breach allegedly exposed up to 2.9 billion records with …
How to start a scan for viruses or malware in Microsoft Defender
Microsoft security help and learning. 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.
Protect yourself from phishing - Microsoft Support
Phishing (pronounced: fishing) is an attack that attempts to steal your money, or your identity, by getting you to reveal personal information -- such as credit card numbers, bank information, or passwords -- …
Protect my PC from viruses - Microsoft Support
Use an anti-malware app - Installing an anti-malware app and keeping it up to date can help defend your PC against viruses and other malware (malicious software). Microsoft Defender is free anti-malware …
Protect yourself from tech support scams - Microsoft Support
Using remote access, these experienced scammers can misrepresent normal system messages as signs of problems. Scammers might also initiate contact by displaying fake error messages on …