Security Industry Specialists Lawsuit: A Breach Notice, Not Yet a Case
Questions about this case?
AI Legal Assistant · free · answers in seconds · general information, not legal advice
Security Industry Specialists, Inc. (SIS), the Culver City security-guard company, is mailing “Notice of Data Security Incident” letters through Kroll. It reported the breach to Massachusetts regulators on September 26, 2026. As of October 12, 2026 we found no filed security industry specialists lawsuit — law firms are investigating. There is no security industry specialists class action settlement, no claim form and no deadline.
Editorially Reviewed — Content reviewed for accuracy using published legal research, government data, and verified court records. See our methodology
Reviewed by Leonard Goldberg, Editor · Last updated
What SIS Has Disclosed
SIS supplies security officers and security staff to corporate clients. Its letter says a data security incident “may have involved some of your personal information held by” the company.
According to the Massachusetts filing, the information involved includes Social Security numbers, driver’s license numbers, medical records and financial account information. Each letter fills in the fields that applied to that recipient.
What SIS has not said: what happened, when it happened, when it found out, or how many people are affected. Massachusetts law limits what a notice to its residents may say about the nature of a breach, so letters sent to other states may say more.
Case Details
No court, no case number, no judge. As of October 12, 2026 we found no complaint against SIS over this breach in news coverage, law-firm listings or our federal docket database. The only legal activity is plaintiff firms advertising investigations: one listing published October 1, 2026 says attorneys are looking into “whether a class action lawsuit can be filed,” and another dated October 5, 2026 says the same.
Breach suits are often filed within weeks of notice letters, so this can change. We could not complete a nationwide court-record search for this update, so treat “no case found” as our finding, not a guarantee.
Status: Investigation Only, No Lawsuit Found
The one deadline that does exist is personal: the date printed in your letter for enrolling in the free Kroll monitoring.
Who Is Affected
SIS has not published a total. Massachusetts lists 40 of its residents — one state only, not a national figure.
The letter does not say whose records were held: SIS describes the data as information it held in its business. One investigating firm’s page is aimed at people who worked at SIS, which fits a guard company that collects licenses, Social Security numbers and payroll details from staff. That is an inference, not a disclosure.
The practical test is your mail. If you got a “Notice of Data Security Incident” from Security Industry Specialists, Inc., you are among the people notified. Keep the letter and envelope — they show which of your fields were involved and would be your proof if a class is ever formed.
Is There Any Money?
If a case is filed and later settles, our data breach settlement calculator shows how comparable settlements have been structured. That is context, not a prediction for SIS.
Security Industry Specialists Breach Timeline
- 1
Date Not Disclosed — The Incident
SIS has not said when the incident happened or when it discovered it. The letter gives no dates.
- 2
September 26, 2026 — Massachusetts Filing
SIS reports the breach to the Massachusetts Office of Consumer Affairs and Business Regulation, listing 40 Massachusetts residents.
- 3
By October 1, 2026 — Letters Mailing via Kroll
Notice letters go out with a Kroll membership number and 24 months of free identity monitoring.
- 4
October 1 and 5, 2026 — Law Firms Investigate
Plaintiff firms post investigation pages asking recipients to come forward. These are intake forms, not lawsuits.
- 5
October 12, 2026 — No Lawsuit Found
We found no filed complaint, no settlement and no claim form. Check back: breach suits are often filed after letters go out.
Three Things to Watch For
A breach with letters in the mail but no settlement is the gap imposters fill:
“Submit your SIS claim” pages
Some sites already say “submit a claim” for this breach. There is no settlement to claim from — those forms send your details to a law firm’s intake team. That is your choice to make, but it is not a claim.
Fake Kroll enrollment calls and emails
Real enrollment happens at enroll.krollmonitoring.com with the membership number printed in your letter. A caller who asks you to read out your full Social Security number or pay a fee to “activate” monitoring is not Kroll.
Messages aimed at guards and former staff
If staff records were involved, expect phishing that names SIS, a client site or payroll. Verify through the call center number on your paper letter, (844) 958-8975, not a number in an email.
Security Industry Specialists Breach — Questions People Ask
Is there a Security Industry Specialists class action lawsuit?
Not that we could find as of October 12, 2026. Law firms are investigating whether to file after SIS reported a data breach to Massachusetts regulators on September 26, 2026. No complaint, court or case number has been reported.
Is there a settlement, claim form or deadline?
No. There is no settlement, no fund, no administrator, no claim form and no claim deadline. The only deadline is the enrollment date for free Kroll monitoring printed in your own letter.
Who is Security Industry Specialists?
Security Industry Specialists, Inc. (SIS) is a privately held security services company headquartered in Culver City, California. It supplies security officers and security staff to corporate clients.
What information was exposed?
According to the Massachusetts filing: Social Security numbers, driver’s license numbers, medical records and financial account information. Not every person had every field — your letter lists yours.
How many people were affected?
SIS has not said. Massachusetts lists 40 of its residents, but that is one state’s count, not the total.
Is the SIS letter from Kroll real?
The notice is genuine: it is titled “Notice of Data Security Incident,” comes from Security Industry Specialists, Inc., carries a Kroll return address and a membership number, and points to enroll.krollmonitoring.com. The call center is (844) 958-8975, Monday through Friday, 8 a.m. to 8 p.m. Central. If a letter deviates from that, call the number yourself rather than any number in the letter you doubt.
Do I have to sign up with a law firm to be included?
No. If a class action is filed and a class is certified or settled, members are notified by a court-appointed administrator and are included unless they opt out. Contacting a firm is optional. Enrolling in Kroll monitoring does not give up any legal right, the letter says.
What should I do right now?
Enroll in the free monitoring before the date in your letter. Place a free security freeze at all three credit bureaus. Because medical records were listed, read your health insurer’s statements for care you never received. Keep the letter.
Separate from this case: were you injured in the last 2 years?
Class-action payouts are fixed amounts through an administrator. A personal injury claim is a different case — and often worth far more. Free estimate, no obligation.
Related Consumer Brand Lawsuits
Open Class Action Settlements
Settlements with claim forms you can file right now
Data Breach Settlement Calculator
What comparable breach settlements have paid per person
Kroll Settlement Administration
Why Kroll appears on breach letters and settlement notices
Class Action Payout Calculator
Estimate a per-person share once a settlement exists