Does Bitlocker Protect Against Ransomware?


Are you worried about the ever-increasing threat of ransomware attacks? Are you wondering if Bitlocker, Microsoft’s encryption tool, is your saviour? Look no further! In this blog post, we’ll explore whether or not Bitlocker can truly protect against ransomware and what other steps you can take to keep your data safe. So buckle up and let’s dive into the world of cybersecurity!

What is ransomware?

Ransomware is a type of malware that encrypts a victim’s files and demands a ransom payment in order to decrypt them. It can spread through phishing emails or drive-by downloads, and once it’s on your system, it can be very difficult to remove. Even if you have backups of your files, you may not be able to access them if your ransomware is effective. That’s why it’s important to have a good security solution in place that can detect and block ransomware before it has a chance to encrypt your files.

Bitlocker is a encryption feature built into Windows that can help protect your files from ransomware. When properly configured, Bitlocker will encrypt all of the files on your hard drive, making them inaccessible to anyone without the encryption key. Even if a ransomware attack does manage to encrypt your files, you should still be able to access them by using the Bitlocker recovery key. However, Bitlocker is not foolproof and there are ways for ransomware to bypass it, so you should still exercise caution when opening email attachments or downloading files from the internet.

How does ransomware work?

Ransomware is a type of malware that encrypts a victim’s files and demands a ransom payment in order to decrypt them. Typically, the ransom is paid in cryptocurrency, such as Bitcoin.

There are two main types of ransomware: locker ransomware and crypto ransomware. Locker ransomware locks the victim out of their device or system, preventing them from accessing their files. Crypto ransomware encrypts the victim’s files and requires the victim to pay a ransom to decrypt them.

Ransomware can be spread through malicious emails, infected websites, or drive-by downloads. Once a victim’s device or system is infected with ransomware, the attacker will typically demand a ransom payment in order to decrypt the victim’s files. Ransom payments can range from a few hundred dollars to thousands of dollars, depending on the severity of the attack.

In some cases, victims may be able to recover their files without paying the ransom by using data recovery software or restoring their system from a backup. However, in many cases, victims are forced to pay the ransom in order to regain access to their files.

What is bitlocker?

Bitlocker is a full disk encryption feature included with Microsoft Windows that can encrypt entire drives, allowing only authorized users to access the data. It is designed to protect data by providing encryption for entire volumes. Bitlocker can use two different types of encryption: AES-128 with Diffuser or AES-256. AES-128 is the default and recommended choice as it is faster and more secure than AES-256.

How does bitlocker work?

When you turn on BitLocker for a drive, it will encrypt all of the files on that drive. The encryption process will use a key that is stored on your computer. When you try to access the encrypted files, your computer will use the key to decrypt them.

If someone tries to access the encrypted files without the key, they will not be able to read them. This means that even if a ransomware attack manages to encrypt your files, the attacker will not be able to decrypt them without the key.

However, there are some things to keep in mind. First, if you forget your BitLocker password, you will not be able to access your encrypted files. Make sure you have a backup of the password in case you need it later.

Second, if an attacker gets access to your computer while BitLocker is turned on, they may be able to disable it and access your files. For this reason, it’s important to have a strong password for your account and to enable two-factor authentication if possible.

Does bitlocker protect against ransomware?

Yes, bitlocker does protect against ransomware. Ransomware is a type of malware that encrypts your files and demands a ransom to decrypt them. Bitlocker is a full-disk encryption feature that encrypts your entire drive, making it impossible for ransomware to encrypt your files.

How to protect your computer from ransomware

Ransomware is a type of malware that can encrypt your files and render your computer unusable until you pay a ransom to the attacker. Bitlocker is a feature in Windows that can encrypt your hard drive, but it will not protect you from ransomware.

There are several things you can do to protect your computer from ransomware:

  •  Keep your operating system and software up to date. Attackers often exploit vulnerabilities in outdated software to deliver ransomware.
  • Use a reputable antivirus program and keep it up to date. Antivirus programs can detect and block many types of malware, including ransomware.
  • Be cautious about opening email attachments and clicking on links in email messages. These are common ways for attackers to deliver ransomware.
  • Back up your files regularly. This way, if you do become infected with ransomware, you can restore your files from backup rather than paying the ransom.


Bitlocker is a great tool for protecting data stored on your computer. While it does not offer complete protection against ransomware, it does provide an additional layer of security that may help prevent or mitigate the effects of a ransomware attack. As with any type of security measure, however, the best way to ensure you are protected against ransomware attacks is to regularly back up your data and keep monitoring your system activity. By being proactive and taking appropriate protective measures you can greatly reduce the risk of a successful attack on your system.

Mark Funk
Mark Funk is an experienced information security specialist who works with enterprises to mature and improve their enterprise security programs. Previously, he worked as a security news reporter.