Well number three if a bad guy has unrestricted physical access to your computer it's not your computer
anymore.
When this principle was created it was 100 percent true.
During one of the pre-vis modules we've learned that if someone is able to run his own operating system
on a computer he can change the administrator password of the computer.
You can also remove his hard drive and make a copy of it.
Nothing can stop him from doing that.
At present the situation is different things to software that enables you to encrypt whole hard drives
system partitions included
full encryptions prevent unauthorized people from reading and modifying hard drive contents even if
they have physical access to the hard drive.
If the encryption mechanism was well designed every modification attempt would be a blind guess.
Even so we can state that the third law is still valid.
To encrypt data you need a key the same key is needed for decryption uses for automatic encryption.
The most
they also prefer not to type long strings of symbols every time they start the system in the case of
automatic encryption the decryption key is saved and the system from person gets physical access to
a computer.
They also get access to the key having the key.
There would easily decrypt and read the data.
The third law is still largely valid despite modern solutions were discussed the exception is when the
decryption key isn't stored on the computer or the storage is secured.
The T.P. and most computers are suited with nowadays.
Gives you this possibility.
We will elaborate on that more in one of the next modules.