Someone is trying to access my facebook account. I received a confirmation code in my number this morning. Do you think that someone who is trying to access my account can hack it even he didn't know/get the code?
Yes definitely someone is trying to hack or access your account. I found an answer in Facebook community regarding this matter. Hope it will help you to make your Facebook account more secured.
We send confirmation codes when someone has login approvals turned on.
Login approvals are a security feature similar to login alerts, but with an extra security step. If you turn on login approvals, you'll be asked to enter a special security code each time you try to access your Facebook account from a new computer, mobile phone or browser.
To check to see if you have login approvals turned on, follow these steps:
1. Go to your Security Settings
2. Click on the Login Approvals section
3. Check to see if the box is checked. You can uncheck the box to stop receiving these codes.
4. Click Save Changes
"Written Jun 06, 2019