Main Electric Supply Company, LLC (“MES”) data breach

Clerk's notes

Main Electric Supply Company, LLC (MES), a distributor of electrical equipment, has reported a data security incident. The company identified unauthorized access to its systems on July 22, 2025. This incident potentially involved personal information maintained within MES's operational environment.

The breach was officially reported to the California Attorney General's office on September 12, 2025. The specific nature of the unauthorized access and the categories of personal information involved have not been publicly detailed. However, if you received a notification letter from MES, it indicates that your personal data was likely among the information accessed.

Recipients of these notification letters are advised to carefully read the document for any specific details MES has provided regarding the incident and any recommended steps. While the exact scope is under investigation, taking proactive measures is generally prudent after any data security event.

As a general precaution, consider monitoring your accounts for any suspicious activity. Remain vigilant for unsolicited communications, such as emails or calls that request personal details, as these could be phishing attempts. It is always wise to use strong, unique passwords for all your online accounts.

Main Electric Supply Company, LLC continues to investigate the incident. Affected individuals may want to explore their options. If you received a data breach notification from MES and wish to understand your potential legal recourse, you may request a free case review.

If a notification letter about this breach reached you, see every California data breach on file or browse all cases.