Office 365 Ransomware

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This page aims to help you remove Office 365 Ransomware. These Cerber Ransomware removal instructions work for all versions of Windows, including Windows 10.

If you are reading this article, you may have caught the Office 365 Ransomware (Cerber). As a result, you may be looking for a way to remove it from your PC forever.  However, this virus is not similar to the ones you have encountered so far. It is blackmailing you for money, it seems to have really blocked some of your most important data and it is more than disturbing. 
If this is indeed your case, we have some good and some bad news for you. Unfortunately, this malware is probably the most threatening one that you can ever come across. Fortunately, below you will find some useful information about the typical behavior of this virus, as well as some helpful tips on prevention and, of course, a removal guide to instruct you how to remove Cerber.

The nastiest malware that has ever existed – Ransomware

Generally, Ransomware is a virus program that is reported to have been created in Russia during the 90s. Then it seems to have quickly spread worldwide.  At the present moment this malware represents the biggest threat to your digital security and one of the hardest to deal with.

As is suggested by the name itself, it is  a type of software that tends to ‘kidnap’ particular files from your system. It does so by exploiting a Trojan horse to enter your PC and then scan your storage for the most widely used files. Once it has predetermined them, it usually locks them up. As you might expect, its creators, certain hackers, only want your money, and as a result, they program the virus to generate a notification to let you know that your computer has been contaminated and ask for ransom to make it “healthy” again and restore the blocked files. The so-called encryption key that you are offered in exchange for your money is formed by two segments – a public one, which you immediately receive, and a private one, which you eventually have to “buy”.

  • It is important that you remember to remove the Trojan as soon as you have successfully gotten rid of the Ransomware. It is also a serious threat that shouldn’t be taken lightly.

How does Ransomware manage to get to your PC?

Ransomware can be spread by various means. Nevertheless, the most usual suspects for distributing it are spam emails and the corresponding to them infected email attachments, software bundles from suspicious sources, shareware, torrents and websites known for their shady origin and content.

The particular program that disturbs you – Cerber

In this paragraph we are going to explain how this particular specimen really works. Probably the first sign of an Office 365 Ransomware infected machine is the noticeable slowing down that the infected users often experience. This will actually be dependent on the processor power and speed of the affected system. However, more or less, the encryption process, which Office 365 Ransomware undertakes, consumes an incredible amount of system resources. Usually you can see that in the Task Manager of Windows, where the encryption process will be the one using the most RAM. In spite of that, such an infection more often gets revealed only after the encoding of the chosen files has been completed and the ransom message has appeared on the computer screen.

How are you supposed to act in case of an infection?

If you have been unlucky enough to catch Office 365 Ransomware, we strongly recommended that you do not rush into paying the amount of money the hackers are trying to get from you. What’s more, no moral or righteous actions should be expected from those criminals. Indeed, you have no reason to believe that they will restore your access to the lost files, even if you pay the ransom. Really, under no circumstances should you surrender to the hackers’ demands and pay before you have made at least some efforts to help yourself. Always remember that giving money to criminals is considered itself a criminal activity.

Luckily, you are not alone in your effort to remove Office 365 Ransomware. We have created a set of removal steps for you to follow and try to safely solve your current issue. Below you will also find some prevention tips to help you stay away from such viruses from now on.

When we talk about prevention

As with most of the physical diseases, prevention is what saves systems when it comes to digital health. Here we have assembled a list of simple and logical prevention tips that you may need to pay attention to, if you don’t want to be tricked by hackers again and again.

  • Invest in a reliable anti-virus program. Make sure that you purchase a well-functioning anti-malware tool with a good reputation. Doing that will spare you a lot of nerves as the Trojans that carry the Ransomware usually exploit program or/ and system vulnerabilities like not having an anti-virus tool.
  • Beware when it comes to the sources of the software that you install on your PC. Always put your trust into recognized and trusted websites.
  • Never open spam emails (or anything from/in them) from senders who you cannot recognize as familiar.


Name Cerber
Type Ransomware
Detection Tool

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Remove Office 365 Ransomware

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You can find the removal guide here.

About the author

Lidia Howler

Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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