Making a RAM image of a running computer with BitLocker volume(s) mounted.This in turn opens numerous vectors of attack that may allow the intruder to intercept the on-the-fly BitLocker encryption key and decrypt the hard drive. Even if your computer is equipped with a TPM2.0/Intel PTT module, Windows will still unlock the encrypted hard drive if Secure Boot conditions are met. What caveats are there when it comes to securing data against physical extraction? The thing is, while BitLocker is nearly a 100% effective solution for protecting the bare drive, it might not be as secure if the intruder has access to the entire computer with the hard drive installed. Introduction to BitLocker: Protecting Your System Disk We have a comprehensive article on BitLocker protection in our blog, which is highly recommended. Note that not all editions of Windows 10 can use BitLocker protection. If your computer meets the requirements (namely, the presence of a hardware TPM2.0 module or software-based Intel Platform Trust Technology), enabling BitLocker on your computer can be as easy as opening the Control Panel and launching the BitLocker Drive Encryption applet. Usage cases: protect data against theft of computer or hard drive protect data if hard drives are sold or RMA’d protect data against physical extraction.Other users on the same computer: not applicable.Physical access, entire computer: it’s complicated.Physical access, hard drive only: strong protection.Note: although Windows 10 Home cannot natively create new BitLocker volumes, it can unlock BitLocker encrypted drives with full read-write access.Availability: Windows 10 Professional and higher with TPM2.0, Intel PTT or Group Policy edit all Windows editions for device encryption in thin and light devices meeting minimum requirements.In other words, securing your boot device with BitLocker is an absolutely mandatory preliminary step and the most important security layer. An unencrypted boot device (disk C: on most systems) allows for way too many vectors of attack ranging from hibernation and page file analysis to instant extraction of stored passwords from your Web browser vault. What information would you like to protect? What threats do you consider important, less important and quite improbable? Full-disk encryption part I: protecting your boot deviceĪ reliable system protection is impossible without protecting your boot device. Defining your goalsīefore you start considering encrypting your hard drives and files, make sure to define your objectives. If you are a Windows user, it all comes down to choosing the optimal data protection strategy for your particular usage scenario protecting your storage media and the data you keep on them. While the previous part may sound a bit complicated, it all comes down to much simpler things than choosing the strongest encryption algorithm or selecting the length of the encryption key. Implementing encryption at the right time and in the right spot is no less important than choosing strong encryption credentials and managing the encryption keys. However, AES encryption does not mean much (or anything at all) when it comes to the real security of your data. How can you make your system and documents secure? Today, 256-bit AES encryption is offered by everyone and their dog.
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