As you develop into a digital design professional you must find a way of your securing passwords and usernames and those of your clients. I have used this software for several years now. It is free for a single platform eg. you can install it onto your phone so your encrypted files can be accessed whenever you have your phone available.
https://www.boxcryptor.com/en/pricing/
I have no affiliation with this company and there are many other ways of keeping your data safe however. Find the solution that suits you best.
