A. There are a couple of ways you can try:
1. Back up documents
You can save the important financial documents on the cloud, such as Microsoft's OneDrive (7 GB free), Dropbox (2 GB free), Apple iCloud (5GB free). Or you can store your data on an external hard drive (Seagate Backup Plus Slim available at Amazon has 1 Terabyte of storage space)
2. Delete and update frequently
In your computer, if there is any unused programs for a long while, they could be an entry point for attackers who can target security flaws to gain access to your computer. Make sure update your programs and most importantly, be sure your security software is up to date.
3 Rotate passwords
Having varied passwords and changing them frequently is a smart way to enhance security. If you found managing a plethora of passwords too hard, use password managers such as Dashlane, LastPass or RoboForm, all have free versions that manage and encrypt passwords, leaving you with only one password to remember.