A security freeze (also called a credit freeze) and a credit lock share the same core goal: preventing your credit report from being used to approve new loans or credit accounts in your name.
Both protections are useful when identity thieves attempt to open new credit lines using stolen personal information.
A credit freeze is a legal consumer protection that is free to use. It restricts most access to your credit report until you lift or temporarily thaw it.
When frozen, lenders generally cannot access your file for underwriting, which blocks many fraudulent applications. A freeze does not directly lower your credit score, but it can prevent lenders from issuing new credit decisions until the freeze is lifted.
Because freezes also block your legitimate applications, you must unfreeze before applying for a new loan, mortgage, or credit card.
You can either:
Temporarily thaw your report for a defined period (for example, one day or one week), or fully remove the freeze and re-enable it after your application is complete.
You must place and remove freezes separately with each major credit bureau. Most bureaus provide online, phone, and mail channels.
Placing and lifting a credit freeze is generally free under applicable consumer protection rules.
To place a freeze, you usually need:
- Full legal name
- Date of birth
- Address history (typically last two years)
- Social Security number
- Government-issued identification
- Proof of address (such as utility, bank, or insurance statement)
Timing depends on channel and bureau policy. Online/app requests are often close to real time, while mail requests may take several days after receipt.
Credit locks may be offered as product-based alternatives, while freezes are legal protections. The exact features, speed, and terms can differ by provider, so review details before choosing.