Data Breach Notification Letter Template

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[Company Name]

[Company Address]

[City, State, ZIP]

[Phone] | [Email] | [Website]

Date: [Date]

Sent via: ☐ Mail ☐ Email ☐ Other: [Method]

Reference ID (Optional): [Incident/Case Number]

To:

[Recipient Name]

[Recipient Address]

[City, State, ZIP]

1. Notice of Data Security Incident

We are writing to inform you about a data security incident that may have involved some of your personal information. We take the privacy and security of information seriously and are providing this notice to explain what happened, what information may have been involved, and steps you can take.

2. What Happened

On or about [Discovery Date], we discovered suspicious activity involving [System/Service]. Our investigation determined that an unauthorized party [accessed/obtained/viewed] certain information during the period from [Incident Start Date] to [Incident End Date] (the “Incident”).

3. What Information Was Involved

The information involved may have included: [List data types—name, email, phone, address, date of birth, account number, payment card, SSN, etc.].

At this time: ☐ We have no evidence of misuse ☐ We are continuing to monitor ☐ We have evidence of misuse (describe).

4. What We Are Doing

In response to the Incident, we took steps to secure our systems and reduce the risk of this happening again, including:

[Action taken, e.g., resetting passwords, disabling access, enhancing monitoring]
[Action taken]
[Action taken]

We also engaged: ☐ Internal security team ☐ External cybersecurity experts ☐ Law enforcement (if applicable).

[Action taken, e.g., resetting passwords, disabling access, enhancing monitoring]

[Action taken]

We also engaged: ☐ Internal security team ☐ External cybersecurity experts ☐ Law enforcement (if applicable).

5. What You Can Do

We recommend you take the following steps to help protect yourself:

Change your passwords and enable multi-factor authentication where available
Review your account statements and monitor for suspicious activity
Be cautious of phishing emails or calls asking for personal information
Consider placing a fraud alert or security freeze on your credit file (if applicable)

Change your passwords and enable multi-factor authentication where available

Review your account statements and monitor for suspicious activity

Be cautious of phishing emails or calls asking for personal information

Consider placing a fraud alert or security freeze on your credit file (if applicable)

6. Credit Monitoring (Optional)

☐ We are offering complimentary credit monitoring and identity protection services for [__] months.

To enroll, visit: [Enrollment URL] and use code: [Code] by [Deadline Date].

If you have questions about enrollment, contact: [Support Phone/Email].

7. For More Information

If you have questions, please contact us at [Support Phone] or [Support Email]. When contacting us, please reference [Reference ID].

8. Closing

We regret any inconvenience this may cause and appreciate your understanding. We remain committed to protecting your information.

Sincerely,

[Authorized Name]

[Title]

[Company Name]

Signatures

[Authorized Name]

Title: [Title]

Date: [Date]

Signature: ___________________________

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Data Breach Notification Letter Template

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Data Breach Notification Letter Template — quick answers

Reviewed July 2026 Free download, PDF & DOCX

What is a data breach notification letter?

A data breach notification letter is a written notice sent to people or customers whose personal data may have been accessed, exposed, or stolen in a security incident. It explains what happened, what information was involved, what the organization is doing, and what steps the recipient can take to protect themselves.

When should you send a data breach notification letter?

Timing depends on applicable laws and contracts. Many rules require notice “without unreasonable delay,” and some jurisdictions set specific deadlines. Organizations usually send notices after confirming the breach scope and validating what data was affected, while coordinating with legal and (if needed) law enforcement.

What should be included in a breach notification letter?

Most letters include a plain-language summary of the incident, the date range, the types of data affected, what the organization has done to secure systems, what the recipient should do next (password resets, monitoring accounts), resources offered (credit monitoring, support hotline), and contact information.

Should you offer credit monitoring?

It depends on the type of data exposed and the risk of misuse. If Social Security numbers, financial account details, or similar identifiers are involved, credit monitoring is commonly offered. This template includes optional language you can use if your organization provides monitoring services.

How do you keep a breach notification letter clear and trustworthy?

Use plain language, avoid speculation, explain what you know and what you are still investigating, and give concrete steps recipients can take. Also include ways to contact your organization for questions and provide reference numbers if your support team needs them.

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