There is no sure way to know if someone is using your social security number. However, you may be able to tell if someone is using your social security number if you see unfamiliar activity on your credit report or if you receive bills or other correspondence for services you did not sign up for. \nYou can also contact the Social Security Administration to report any suspicious activity.
Can Someone Use Your Social Security Number Without You Knowing?

Yes, someone can use your Social Security number without you knowing.
Your Social Security number is like a credit card number, and if someone has it, they can use it to open new accounts, make purchases, or get a loan in your name. They can also use it to get a job or file taxes.
You might not find out that someone is using your Social Security number until you get a bill for something you didn’t purchase, or you get denied for credit because of bad credit that isn’t yours.
If you think someone is using your Social Security number, you should contact the Federal Trade Commission and the Social Security Administration.”
How Do I Stop Someone From Using My Social Security Number?
You can report the misuse of your Social Security number to the Federal Trade Commission.
You may also want to contact one of the three major credit bureaus to place a fraud alert on your credit report. This will help prevent someone from opening new accounts in your name.
Equifax: 1-800-525-6285
Experian: 1-888-397-3742
TransUnion: 1-800-680-7289
Can You Change Your Ssn?

No, you cannot change your SSN.
The Social Security Administration (SSA) does not permit anyone to change or alter a Social Security number.
What To Do When Your Ssn Is Stolen?
If your SSN is stolen, you should report it to the police and the credit bureaus. You should also change your passwords and account numbers.
Can Someone Access Your Bank Account With Your Ssn?

No, your Social Security number is not connected to your bank account. However, your bank may require your SSN when you open a new account.
Can I Put A Pin On My Social Security Number?
No, you cannot put a pin on your Social Security number.
The Social Security number is a unique identifier assigned to U.S. citizens and legal residents. It is used to track an individual’s earnings over their lifetime and to determine eligibility for Social Security benefits. The Social Security Administration does not issue pins for Social Security numbers.
What Can Someone Do With The Last Four Digits Of Your Social Security Number?
The last four digits of a Social Security number are commonly used as a identifier. They can be used to verify someone’s identity, to look up their personal information, or to track their credit history.
Someone with your Social Security number’s last four digits could look up your personal information in a government database, or they could use your number to apply for credit in your name. If you think your Social Security number has been compromised, you should contact the Social Security Administration.
What Is The Biggest Danger When You Reveal Information Such As Your Social Security Number?
The biggest danger when you reveal information such as your Social Security number is that it can be used to commit identity theft.
Identity theft is when someone uses your personal information, such as your name, Social Security number, or credit card number, without your permission, to commit fraud or other crimes.
Can Two People Have The Same Social Security Number?
No, two people cannot have the same Social Security number.
Can Someone Have The Same Last 4 Digits Of Ssn As Me?
It is possible for two people to have the same last four digits of their social security number, but it is not very likely. There are only 10,000 possible combinations of digits for the last four digits of a social security number, so the odds of two people having the same last four digits are 1 in 10,000.
Can Someone Access Your Bank Account With Your Ssn?
No, your Social Security number is not connected to your bank account. Your Social Security number is used to track your earnings and pay benefits when you retire or become disabled.