Understanding your Sonnenfeld Financial Inc dba The SFI Group data breach notification letter
If a Sonnenfeld Financial Inc dba The SFI Group letter arrived in your mailbox, here is what it means, why you received it, and the free steps you can take right now.
Why you received this letter
Sonnenfeld Financial Inc, doing business as The SFI Group, appears to be a financial services firm specializing in investment management, wealth planning, or insurance brokerage services. As a financial institution, the company typically collects and maintains sensitive personal information, including government identification numbers, financial account details, and comprehensive tax or investment records necessary for managing client assets. This data breach was officially reported to the Indiana Attorney General in 2025, and the company has since issued formal notification letters to all impacted individuals. If you received this notice, it indicates that your personal information was stored within their systems at the time of the incident and may have been subject to unauthorized access.
What to do after the letter
Confirm the notice is genuine
A legitimate Sonnenfeld Financial Inc dba The SFI Group notice references the specific incident reported to the Indiana Attorney General and describes which categories of your information were involved. Compare the letter against the public filing before acting on any links or phone numbers it contains.
Keep the letter — it is your proof of connection
The notification letter is the document that ties your personal information to this incident. Keep the original and photograph it. If you later request a case review, this letter is the strongest evidence that you were among the affected individuals.
Protect your accounts and credit
Depending on what was exposed, consider a free credit freeze with all three bureaus, new passwords for reused credentials, and monitoring of financial statements. These steps are free and do not require you to wait for anyone's permission.
Find out whether you have a claim
Whether the Sonnenfeld Financial Inc dba The SFI Group breach gives you a legal claim depends on the facts. A free, no-obligation case review will tell you where you stand — there is no cost and no commitment to find out.
This page summarizes a data breach reported to the Indiana Attorney General for informational purposes and is attorney advertising. It does not create an attorney-client relationship. DataBreachPayment.com does not provide legal advice through this page.