If you want to protect your laptop/desktop computer from unknown access, there are steps you can take to mitigate the risk of having your computer compromised.
Create password for User Account
STEP 2: Click Users and accounts

STEP 3: Choose Sign-in options and tap the Add button under Password

STEP 4: Type a new password, retype it, input password hint and click Next

Tip: In this method, the password hint is a required field
STEP 5: Choose Finish

STEP 2: Tap Change account type to move on

STEP 3: Select a user account

STEP 4: Choose Create a password

STEP 5: Enter a new password, reenter it, type password hint and click Create password

Tip: The password hint is not required field in this method, so you can skip the password hint box.
Encrypt your data
You can protect document by using password to help prevent unauthorized access.
STEP 1: Click the File tab

STEP 2: Click Info

STEP 3: Click Protect Document, and then click Encrypt with Password

STEP 4: In the Encrypt Document box, type a password, and then click OK

STEP 5: In the Confirm Password box, type the password again, and then click OK

NOTE: If you lose or forget a password, Word cannot recover your data.
Use Dropbox to store documents
With Dropbox, you can safely store all kinds of document, and access them from all your computer and other devices. Even if your PC damaged or stolen, these files will be safe.
Install antivirus
Create password for User Account
- Way 1: Set password for user account in PC settings.
STEP 2: Click Users and accounts

STEP 3: Choose Sign-in options and tap the Add button under Password

STEP 4: Type a new password, retype it, input password hint and click Next

Tip: In this method, the password hint is a required field
STEP 5: Choose Finish

- Way 2: Put password on user account in Control Panel.
STEP 2: Tap Change account type to move on

STEP 3: Select a user account

STEP 4: Choose Create a password

STEP 5: Enter a new password, reenter it, type password hint and click Create password

Tip: The password hint is not required field in this method, so you can skip the password hint box.
Encrypt your data
You can protect document by using password to help prevent unauthorized access.
- Password Protect and Encrypt Word files
STEP 1: Click the File tab

STEP 2: Click Info

STEP 3: Click Protect Document, and then click Encrypt with Password

STEP 4: In the Encrypt Document box, type a password, and then click OK

STEP 5: In the Confirm Password box, type the password again, and then click OK

NOTE: If you lose or forget a password, Word cannot recover your data.
- Password Protect and Encrypt Excel files
- Select File > Info.
- Select the Protect Workbook box and choose Encrypt with Password.
- Enter a password in the Password box, and then select OK.
- Confirm the password in the Reenter Password box, and then select OK.
Use Dropbox to store documents
With Dropbox, you can safely store all kinds of document, and access them from all your computer and other devices. Even if your PC damaged or stolen, these files will be safe.
Install antivirus