USB drives are constantly disappearing. Laptops and notebooks are often lost and easily stolen by thieves. And, although they are much less likely to disappear, unauthorized people can gain access to desktop computers, along with servers, which can contain vast amounts of sensitive company information and customer data. Additionally, the data they still have when disposed of can potentially be recovered if hard drives are not wiped properly. Effective protection against data theft is through the implementation of data encryption. .One data encryption product currently available to Windows users is BitLocker™BitLocker™ Drive Encryption is a proprietary encryption tool designed by Microsoft to provide strong data protection by encrypting entire disk drives. This includes the operating system, user files, system files, swap files, and hibernate files. BitLocker provides encryption support for portable hard drives and flash drives aptly called BitLocker-to-Go. The feature requires a user to enter a password when inserting the drive into a machine in order to access the contents. BitLocker uses 128-bit or 256-bit Advanced Encryption Standard encryption. This level of encryption prompted at least one US government agency (the FBI) ​​to approach Microsoft's Peter Biddle, head of the engineering team that developed BitLocker, and unofficially request a backdoor. Unofficially, Peter Biddle refused the request. Without a backdoor or knowledge of the password, a brute force cracking attempt would likely take a few trillion years. And it is worth mentioning that the Department of Defense has given this encryption standard... Its seal of approval, because in case someone manages to gain p...... half the card ...... skilled. If NTFS is used, users will be prompted to format the drive when they try to access content. Users will find that there are some performance reductions and should generally expect a drop in computer performance of at least single-digit percentages. BitLocker was created as protection for offline attacks and does not encrypt or decrypt data upon reading or writing, it will only encrypt entire drives as required by the system. So, as usual, well-maintained firewalls and quality antivirus software are still essential security components. The software is proprietary and therefore the source code is not available for public review, so consumers have no way to guarantee that there are no backdoors. for government agencies or other malicious content regardless of what Microsoft may claim. And that's BitLocker drive encryption in a nutshell.