SIN fraud and data breaches
We are committed to protecting the integrity of the Social Insurance Number (SIN) Program from fraud and misuse. We take any breach of information very seriously.
If you suspect that someone is using your SIN fraudulently or you have been notified that your SIN was included in a data breach, it is crucial to act fast to minimize potential damage and prevent further misuse.
Signs of unauthorized use could include:
- receiving a Notice of Reassessment from the Canada Revenue Agency (CRA) for undeclared earnings. This may mean that someone else used your SIN to earn income
- noticing unfamiliar inquiries on your credit report
- noticing unfamiliar records of employments on your My Service Canada Account
Monitoring
If your SIN was exposed in a data breach, you must closely monitor your personal and financial information for any unauthorized use.
Here are key areas to monitor:
Credit reports
Contact Canada's 2 major credit bureaus (TransUnion Canada and Equifax Canada) and request a copy of your credit report (there may be a fee). Review your reports to identify :
- accounts that you did not open
- credit inquiries you did not initiate
Consider adding a fraud alert to your file (there may be a fee). This will instruct creditors to contact you before opening new accounts in your name.
Financial statements
Examine your banking and credit card statements to identify any unusual or unauthorized activity.
Mail
Look out for suspicious incidents such as:
- opened envelopes
- missing financial statements you were expecting
You do not need to inform the SIN Program if:
- you suspect someone is using your SIN fraudulently
- you find out that your SIN was part of a data breach
The SIN Program cannot issue a new SIN without proof that your SIN was used to commit fraud.
Reporting
If you determined that fraud has occurred, take the following steps to report the fraud:
File a police report
- Get a case reference number and the officer's name and telephone number.
- The report must include your name and SIN (your full SIN or last 3 digits of your SIN).
- Ask for a copy of the report.
Notify the Canadian Anti-Fraud Centre
- Report the fraud via their website or call 1-888-495-8501.
- They can provide further guidance on identity theft.
Contact credit bureaus
- Contact Canada's 2 major credit bureaux (TransUnion Canada and Equifax Canada).
- If you have not already done so, add a fraud alert to your file (there may be a fee). This will instruct creditors to contact you before opening new accounts in your name.
Contact creditors
If your credit report reveals unauthorized or suspicious activity, contact each creditor to report the identity theft. Request that they close any accounts you did not open and decline any new accounts you did not request.
Contact your financial institutions
If your credit reports revealed unauthorized or suspicious activity, inform your financial institutions.
Contact Canada Post
If you noticed suspicious activity with your mail delivery, report the problem to Canada Post.
Contact the affected government program
If your SIN has been used fraudulently to obtain money from the government, you must report the fraud directly to the affected program (for example, the Employment Insurance Program) to stop fraudulent payments.
Reporting SIN fraud to the SIN Program
Reporting SIN fraud to the SIN Program is not required.
While the SIN Program may issue a new SIN if you have proof that your SIN was used fraudulently, this is not recommended. Having multiple SINs can increase fraud risk. Getting a new SIN does not erase your old SIN and does not protect it from future abuse. For more information about the responsibilities associated with getting a new SIN, see the "If you have been issued a new SIN" section.
The monitoring measures described above provide better protection against further misuse or identity theft than getting a second SIN.
If you still wish to report fraud or request a new SIN, you must do so by visiting a Service Canada Centre and bringing the required documents.
If you do not provide the required documents, your application for a new SIN will be rejected.
Requesting a new SIN does not guarantee that a new SIN will be issued.
Select the type of suspected fraud below to obtain the list of required documents.
Your SIN was used to obtain credit
- All required identity documents including:
- a valid primary identity document
- a valid secondary document
- a valid supporting document (if applicable)
- a police report. You may provide:
- a police case reference number
- the report you filed with the police, or
- a letter from the police confirming SIN fraud if an investigation was made
- a letter from a creditor confirming the fraudulent use of your SIN. The letter must:
- include your name and your SIN (or last 3 digits of your SIN)
- state that you are not responsible for any fraudulent purchases made using your information
If the creditor's letter does not include your SIN:
- provide a copy of the credit application filled by the impostor. The application must show your name and SIN (or last 3 digits of your SIN)
- the information on the creditor's letter must be linked to the credit application
Your SIN was used for employment fraud
- All required identity documents including:
- a valid primary identity document
- a valid secondary document
- a valid supporting document (if applicable)
- a police report. You may provide:
- a police case reference number
- the report you filed with the police, or
- a letter from the police confirming SIN fraud if an investigation was made
- a printout of all employers who issued T4 slips for your SIN over the past 3 years (available from CRA at 1-800-959-8281). Review this list and identify employers for whom you have not worked. Service Canada will contact them on your behalf
- a clear photograph of yourself. Service Canada will share this picture with the identified employers to verify whether you have worked for them
- a list of your addresses for the past 10 years
Ensuring continued protection
After you've reported the fraud, you must remain vigilant to protect yourself from further theft.
Regularly check your credit reports, financial statements, and personal information for any unauthorized use of your SIN.
If you have been issued a new SIN
If you have been issued a new SIN, there are important responsibilities you must manage for both your new and old SIN. Service Canada can only share your new SIN with federal departments and agencies that need it. Service Canada cannot correct credit files or protect your new SIN from misuse.
Your responsibilities with your new SIN
- You must notify relevant parties (for example, banks, creditors, employers, pension providers) of your new SIN so they can update their records
- If you don't update your SIN correctly, you may not receive benefits and could be at risk of fraud or identity theft
Your responsibilities with your old SIN
- You remain responsible for your old SIN
- If someone uses your old SIN fraudulently and a business doesn't check your credit, you could be liable for the impostor's debts
- If fraud occurs, you must prove you were not involved in the misuse of your old SIN
Useful resources
To learn more about protecting yourself from fraud and identity theft, visit the following resources:
- SIN Code of Practice
- Office of the Privacy Commissioner of Canada
- Canadian Anti-Fraud Centre
- Office of Consumer Affairs
- Fraud awareness and reporting
- Canada's 2 Major Credit Bureaus:
- Equifax Canada: 1-800-465-7166
- TransUnion Canada: 1-800-663-9980
Page details
- Date modified: