Google has removed an app from its Play Store, but after downloading it more than a million times, according to a report published by Express.

The app, called PIP Pic Camera Photo Editor, was found to contain nasty malware perfectly capable of stealing Facebook credentials including usernames and passwords.

This could allow hackers to access accounts, steal personal data, and send scam messages to contacts.

Until earlier this week, the photo-editing software was still available for download and installation, but Google has now blocked access after being alerted to its risks.

Unfortunately, this will not be good news for the millions of people who have already installed the app on their devices.

And if you are among those unlucky people, it is a good idea to delete the app from your devices and change your Facebook password without delay.

This threat was discovered by the Dr. Web team, and it's not the only app that has caused some concern.

According to the security company's latest report, there are 4 other apps that all contain malware that are able to display unwanted ads, reduce battery life and even make unauthorized changes to the phone itself.

Applications include: Wild & Exotic Animal Wallpaper, ZodiHoroscope, PIP Camera 2022 and Magnifier Flashlight.

Some of these apps have now been removed by Google, as Zodi Horoscope and Pip Camera 2022 are no longer available for download.

As with all apps, before you start downloading anything to your device, it's a good idea to check with the person who developed the software and then read as many reviews as possible.

Other users often warn about issues with apps, and if you suddenly start seeing endless 1-star ratings, you know you need to walk away.

It's also a good idea to use Google Play Protect to help keep your apps safe and your data private.

Google Play Protect scans your apps and devices for any malicious behavior and performs a security check on apps from the Play Store before you download them.

It also scans your device for potentially harmful applications from other sources.