Identity theft happens when someone uses your personal information without permission, usually to get money, credit, services, benefits, or access in your name. The impact can be small and fast to fix, or it can take months of cleanup.
Does this affect you?
Use this if you have a Social Security number, bank account, credit card, loan, insurance plan, tax record, or credit history. In practice, that means nearly every adult.
The main types of identity theft
These categories can overlap, but the differences help you know what to watch.
- Financial identity theft is the most common type. Someone opens credit cards, takes loans, drains accounts, or makes purchases using your information.
- Medical identity theft happens when someone uses your details to get care, prescriptions, equipment, or insurance billing. It can also mix someone else’s medical history into your records.
- Tax identity theft happens when someone files a tax return in your name to steal a refund before you file your real return.
- Criminal identity theft happens when someone gives your name or identifying information during an arrest, ticket, or investigation.
- Synthetic identity theft combines real stolen information, often a Social Security number, with fake names, addresses, or birth dates to build a new fraudulent identity.
How identity theft usually starts
It is not always caused by something you clicked.
- Company data breaches can expose names, passwords, Social Security numbers, card details, or account information.
- Phishing emails and texts trick people into typing credentials or personal details into fake pages.
- Mail theft can expose checks, cards, statements, tax forms, and benefit documents.
- Weak or reused passwords let attackers get into accounts and reset others.
- Public records and data broker listings can help scammers personalize attacks.
More control
Freeze credit before trouble starts
A credit freeze with Equifax, Experian, and TransUnion blocks most new credit accounts from being opened in your name until you temporarily lift it.
Use unique passwords and MFA
A password manager and multi-factor authentication reduce the chance that one stolen password turns into many compromised accounts.
Watch for warning signs
Unexpected bills, collection notices, credit score drops, denied credit, tax-return rejection, or notices about accounts you never opened should be investigated immediately.
Sources
- FTC – Identity Theft (2025)
- IdentityTheft.gov – What Is Identity Theft? (2025)
- Consumer Financial Protection Bureau – Identity Theft (2025)