# MacOS Cannot Verify That This App is Free from Malware
If you have a MacBook or iMac, you likely already know that Apple products are known for their high security standards. However, there may come a time when you encounter a message that reads “MacOS Cannot Verify That This App is Free from Malware.”
This can understandably be alarming for many users and leave them unsure of what to do next. In this article, we will go over everything you need to know about this message, including why it happens and what steps you can take to protect your device.
## Why does this message appear?
The message “MacOS Cannot Verify That This App is Free from Malware” appears when you try to install an application that is not available on the Mac App Store. It means that the app you are trying to install has not been screened or approved by Apple, and they cannot guarantee that the app is safe to use.
It’s not uncommon for legitimate apps not on the Mac App Store to trigger this message, especially if the app is relatively new or comes from a smaller developer with fewer resources to ensure frequent updates and security patches. The message is just a warning, not necessarily a red flag, but it’s better to be cautious.
Here are some reasons why this message may appear:
– The app is not signed by an authorized third-party developer and may have been tampered with.
– The app may contain malware or other malicious software that could harm your device.
– The app may be outdated, and the developer has not issued security patches, leaving vulnerabilities open.
## What should you do if you see this message?
Seeing this message doesn’t mean that you can’t install the app. However, you need to take certain precautions to avoid malware or other issues with your system.
Here’s what you should do next:
1. **Beware of the source of the app.** Before installing any app, make sure you download it from a reputable source. This may involve doing research about the development team behind the app or reading reviews from other users. Try to avoid downloading apps from spammy websites or pirated software sites.
2. **Scan the app with an antivirus program.** To play it safe, you can always run a full system scan using your Mac’s in-built antivirus software or other reputable antivirus programs like AVG or Avast.
3. **Use the built-in Gatekeeper app.** Your Mac comes with a security feature called Gatekeeper that can block suspicious apps from executing and keep your device safer. You can adjust the Gatekeeper settings to allow installation of all apps or just those from trusted developers.
4. **Keep Your System Updated.** Updating your Mac’s operating system regularly helps to patch vulnerabilities and bugs. Additionally, it allows your device to access the latest security features and tools.
In conclusion, while encountering the message “MacOS Cannot Verify That This App is Free from Malware” can be alarming, it doesn’t necessarily mean the app is malicious. However, it’s important to be cautious and take the appropriate steps to protect your Mac from malware.
By following the steps outlined above, you can take control of your device’s security and stay safe while enjoying all the software you need and want.