When choosing the best way of protecting your information keep in mind how valuable that information is to you and to what extent it is reasonable to protect it. Therefore, the first thing you should do is to define the level of privacy you need and thus a level of protection for it. If you do not actively use the Internet to work, even a two-step verification involving SMS with a code sent to your mobile phone may seem cumbersome, though most people who use email for sending business data appreciate this option.
Not everyone is ready to pay for data to be stored, but if you use cloud storage for keeping corporate data, you'll find paying for safe and secure data storage reasonable. So try to strike that delicate balance between the required level of protection and the time/effort/money spent on it.
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