Contents
Is hibernate a security risk?
When you put the system in hibernation the entire memory is stored on disk (hiberfil. sys). This always poses a security threat because the memory can contain private data, passwords, keys and so on. Approaching the storage with another systems gains you access to the entire memory dump.
Can your computer be hacked when it is turned off?
In general, the answer is no, you cannot hack into a computer that’s been turned off. Unless two conditions are met, the PC cannot be restarted and hacked from outside, even if you leave it connected to the internet and to power. One of those conditions involve a feature called “Wake on LAN”.
Is it bad for your computer to go into hibernate?
But is it bad for the PC? The answer depends on what kind of hard disk you have. With a hard disk drive (HDD), It basically freezes all your PC actions and stores this state safely on your hard disk in a enormous hibernation file, called hiberfil.sys in Windows systems.
Why does hibernate feature pose any security threat?
This always poses a security threat because the memory can contain private data, passwords, keys and so on. Approaching the storage with another systems gains you access to the entire memory dump. Encrypting the disk helps but not all memory can be encrypted to disk, for example some memory segments must be available in order to run the kernel.
What does hibernate mode do to the hard disk?
With a hard disk drive (HDD), It basically freezes all your PC actions and stores this state safely on your hard disk in a enormous hibernation file, called hiberfil.sys in Windows systems.
What happens to encryption keys when the system is in hibernation?
With hibernation, a system is effectively ‘off’, and keys will not be resident in physical memory (I’ll get to the second caveat that discusses this shortly). On resume from hibernation, BitLocker will require the credentials I discussed earlier, and without those credentials, encryption keys will not be loaded into DRAM.