FCRA Section 605B Guide: Identity Theft Credit Report Blocking

Which route fits your situation?

Section 605B is the block route for information that resulted from identity theft. Items that are yours but reported inaccurately use the Section 611 dispute route instead. Pick the path that matches what you found on your report.

What is FCRA 605B?

Section 605B of the Fair Credit Reporting Act (FCRA) provides a process that identity theft victims may use to request blocking of information on a consumer report when that information resulted from identity theft.

In plain terms, blocking is not the same as a routine “please investigate” letter. It is tied to identity theft documentation and specific identification of the information you believe should not appear on your report.

Outcomes depend on the facts, the completeness of your packet, and how the consumer reporting agency reviews your materials. No tool—including 605b.ai—can guarantee that a bureau will block, delete, or correct any item.

• What is FCRA 605B?
• Identity Theft Dispute Packet

Who may use the FCRA 605B process?

This process is generally intended for consumers who believe particular accounts, collections, inquiries, addresses, or other report information resulted from identity theft—not from their own authorized activity.

If you are disputing accuracy for other reasons (for example, a billing disagreement on an account you opened), a different dispute path may be more appropriate. When in doubt, review official FTC and CFPB consumer guidance and consider qualified professional advice.

How the identity theft blocking process works

At a high level, many consumers follow these steps:

1. Review credit reports and identify suspicious or fraudulent-looking items.
2. Gather identity theft documentation (often including an FTC Identity Theft Report).
3. Verify identity and current address with acceptable supporting documents.
4. List each disputed account, inquiry, or personal information item with specific details.
5. Prepare a structured dispute packet and cover letter.
6. Send the packet to the appropriate consumer reporting agency or furnisher.
7. Keep proof of mailing and delivery (certified mail is strongly recommended).
8. Monitor responses and document timelines.
9. Escalate with supplemental documentation or a CFPB complaint when appropriate.

• Identity Theft Dispute Packet
• Bureau response timeline

Documentation requirements

Documentation is the backbone of an identity theft blocking request. Vague letters without exhibits are easier to delay or deny.

A complete packet often includes identity verification, proof of address, report excerpts, a fraudulent item list, an FTC Identity Theft Report, and mailing records after you send.

• Identity Theft Dispute Packet
• FTC Identity Theft Report
• Proof of identity
• Proof of address

FTC Identity Theft Report

An FTC Identity Theft Report (through IdentityTheft.gov) is a common piece of identity theft documentation. It helps establish that you reported the theft and can support consistency between your disputed items and your narrative.

The report should identify the types of information you believe are fraudulent. Inconsistencies between the report and your item list can slow review.

• FTC Identity Theft Report

Common mistakes

• Sending a vague dispute without naming exact accounts, inquiries, or dates.
• Omitting government-issued ID or proof of address.
• Not keeping copies of the full packet and mailing receipts.
• Failing to track delivery dates for timeline documentation.
• Relying only on generic news articles about a data breach without personalized notices.
• Using language that implies guaranteed deletion or legal representation.
• Assuming blocking is automatic once a letter is mailed.

Bureau response expectations

After a complete packet is received, consumer reporting agencies generally follow FCRA timelines for investigation and response, but individual cases vary.

Document the delivery date, save response letters, and note any partial resolutions or denials. Delays and denials should be recorded for possible supplemental disputes or escalation.

• Bureau response timeline

What if the bureau denies or does not resolve the issue?

If a bureau denies a request or responds incompletely, review the stated reason carefully. Many denials cite missing identity documents, unclear item identification, or insufficient identity theft documentation.

You may be able to send a corrected supplemental packet, request procedure-related information where applicable, or file a CFPB complaint with organized exhibits. Consult qualified professionals when your situation is complex.

• CFPB complaint after denial
• Certified mail for credit disputes

How 605b.ai helps

605b.ai is self-service software—not a law firm, credit repair company, or representative that files disputes for you.

The platform may help you analyze uploaded credit report PDFs, identify suspicious tradelines and inquiries, organize packet components, prepare dispute documentation from templates, and track workflow status in your own records.

You send your own letters and maintain your own correspondence with bureaus, furnishers, and regulators.