Encryption: Encrypt everything to protect your data, is the slogan that has prevailed in recent years and especially after its leaks Snowden. With so much news about data leaks flooding us with concerns about snooping are increasing and so many times today encryption has become an obsession.
But do you need to encrypt everything?
Most operating systems include encryption options by default. But if your operating system does not, you should turn to third-party software. If your system supports encryption, applying it to your computer will be easier than using third-party programs. 
When can encryption really help?
Let's forget for a moment the fear caused by the news about leaks that happen every day, and let's look at some cases where you really need to lock all your files:
Protecting sensitive data in the event of your computer being stolen: If stolen portable σας υπολογιστής, η κρυπτογράφηση δεν θα επιτρέψει στον κλέφτη να δει τα αρχεία σας. Έτσι ευαίσθητα δεδομένα, οικονομικές πληροφορίες και τυχών κωδικοί πρόσβασης που υπάρχουν στον υπολογιστή σας θα είναι ασφαλή. Η μόνη λύση που μένει στον κλέφτη είναι να διαγράψει τον σκληρό σας και να εγκαταστήσει ένα λειτουργικό από την αρχή. Έτσι αν υπάρχουν ευαίσθητα έγγραφα στον υπολογιστή σας, η κρυπτογράφηση έχει νόημα. Ο κλέφτης δεν ενδιαφέρεται για τις φωτογραφίες της γάτας σας, τα MP3 και κάθε βίντεο που έχετε κατεβάσει. Επίσης αν ο υπολογιστής σας είναι σε ασφαλές μέρος και δεν κινδυνεύει από κλέφτες, και πάλι η κρυπτογράφηση είναι προαιρετική και όχι απαραίτητη.
Storing or sending sensitive data over the Internet: When storing something particularly sensitive, such as tax document files that contain personal information such as your VAT number etc, it is a good idea to use encryption. Consider encryption a necessary action before uploading archive in the Cloud or before sending it in an email.
Business: Large enterprises usually offer guidelines and require encryption of sensitive data. The measures they are taking are meant to prevent the stories we often hear about mobile theft computers containing huge databases of millions of credit card numbers. Of course, this data should also be completely encrypted, but apart from that, common sense also helps. Such a computer should not be sitting in the back seat of a car in the parking lot.
Encryption could potentially protect data on your illegal activities from law enforcement, although they will try to extract your encryption key. Remember that we focus on the average user and not on those who have something to hide from the Authorities.
If encryption is enabled by default, there is no need to worry. You can just use it, but if you are on a system that does not have encryption options and the files on your computer are not worth talking about, you do not need to upgrade your system to encrypt them. In other words, you should not go to Windows Pro from the Home version and use it BitLocker.
Older versions of Windows (7, 8.1) running on older hardware do not offer default encryption. Setting up encryption will cost you time and energy. You may not need it if your computer only has pictures of your cat.
But let's get to the question that concerns most people: does encryption offer better safety;
We have mentioned it too many times: There is no perfect security. The locks on the doors of our house can be of the latest technology but there is also the skylight.
The obsession with encrypting every file you have on your hard drive and in the Cloud is like the example of a well-locked door. You never know where it will come from.
A good practice for all those who do not have important things to hide is to spend less time encrypting and adopting other more essential behaviors. Use stronger passwords, and two-factor authentication.
As operating systems increasingly adopt encryption and make it easier, it could become a habit. But for now, the average user should not think about encryption, especially if their data does not require it.
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