Alliance Environmental Group Data Breach

Alliance Environmental Group, LLC, a California environmental remediation contractor based in Azusa, is notifying individuals that their personal information may have been exposed after unauthorized access to its network earlier this year.

Alliance Environmental Group, LLC, headquartered in Azusa, California, has begun notifying individuals of a data security event, according to a filing with the California Attorney General. According to the company’s notice letter, signed by Chief Executive Officer Mike Bible, Alliance became aware of suspicious activity in its network on May 7, 2026, and determined that certain files had been accessed or acquired without authorization between April 24, 2026 and May 7, 2026. The company’s review of the affected files was completed on August 17, 2026, and notice was sent to affected individuals on September 15, 2026 — about 131 days after Alliance first became aware of the incident.

Source: Alliance Environmental Group, LLC notice letter; California Attorney General data breach list, reported 09/15/2026 (breach dated 04/24/2026).

A Three-Month Review Before Notice

The bulk of the delay in this case is in the review period itself: Alliance took roughly three and a half months, from discovery in early May to a completed review in mid-August, to determine what information was present in the affected files and who it belonged to. Notice followed about a month after the review closed. That shape — a lengthy investigation followed by a comparatively prompt notice — is different from cases where a company sits on a completed finding for months, but a 131-day total gap between discovery and notice is still worth scrutiny.

What Information Was Involved

Alliance’s notice letter states that the personal information related to affected individuals may include their name and additional data elements — but the version of the letter reviewed for this post has that section blank, meaning the specific categories of information involved are not confirmed in the public record. Alliance is offering complimentary access to Experian IdentityWorks credit monitoring services to affected individuals, with an enrollment deadline of December 31, 2026.

What You Can Do Now

• If you received a notice letter from Alliance Environmental Group, enroll in the complimentary Experian IdentityWorks credit monitoring before the December 31, 2026 deadline
• Review your credit reports and account statements for any unfamiliar activity
• Watch for phishing attempts referencing Alliance Environmental Group
• Contact us for a free case review if you received a notice letter from Alliance Environmental Group

Do You Have Legal Options?

Companies have a legal duty to secure the personal information they collect and to notify affected individuals without unreasonable delay once a breach is discovered. If you received a notice letter from Alliance Environmental Group, you may have legal options.

If you received a data breach notice from Alliance Environmental Group, contact Emery | Reddy today for a free case review.

FAQ

What information was exposed in the Alliance Environmental Group breach?

The notice letter reviewed for this post does not specify beyond stating that name and additional information may have been involved. No confirmed, itemized list of exposed data categories is currently available.

How many people are affected?

No population figure has been released by Alliance Environmental Group or any regulator as of this writing.

How long did it take Alliance Environmental Group to notify people?

About 131 days from when the company became aware of the incident (May 7, 2026) to when notice was sent (September 15, 2026), including roughly three and a half months to complete its review of the affected files.

Do I have a legal claim?

Companies have a legal duty to secure personal information and to notify affected individuals without unreasonable delay. If you received a notice letter from Alliance Environmental Group, contact the Data Breach Attorneys at Emery | Reddy at 916.995.5968 or www.emeryreddy.com for a Free Case Review. No Fee Unless We Recover.