Plant Construction data breach letter: files downloaded September 8 to October 15, 2026, with SSNs

Date	Event
September 8, 2026	Start of the period in which the intruder had access
October 14, 2026	Plant Construction is alerted to possible unauthorized access
October 15, 2026	End of the access period the investigation found
November 13, 2026	Notice posted by the California attorney general

Who is Plant Construction?

The company says it is a San Francisco-based firm that has provided general contracting and construction management from the Bay Area to Southern California since 1947. The letter is signed from 300 Newhall Street, San Francisco. It does not say whether the people notified are employees, subcontractors' workers or others.

What information was taken?

Social Security numbers together with names. The sample letter names those two items outright rather than leaving the data as a field filled in per letter.

When did the unauthorized access end?

The access period the investigation found ends on October 15, 2026, one day after the company was alerted on October 14. The letter does not say when the intruder was locked out or how it got in. It also does not say whether ransomware or an extortion demand was involved.

Has the information been misused?

Plant Construction says it has no evidence of identity theft or fraud linked to the incident, and it says so twice in the letter. It says it is reviewing its policies on how personal information is stored and who can reach it. It is also notifying the regulators the law requires.

What is Plant Construction offering?

Identity monitoring through Kroll, at no cost, for a number of months the sample letter leaves blank. People must enroll themselves at enroll.krollmonitoring.com with the membership number on the letter. The assistance line is (844) 971-8650, 9:00 a.m. to 6:30 p.m. Eastern, Monday to Friday. Kroll's credit monitoring requires an adult with established U.S. credit and a Social Security number. Credit monitoring offers in breach letters compares Kroll's offer with the others in the log, and the sector table shows how fast industrial companies disclose.

Should I place a fraud alert or a credit freeze?

The letter describes both. An initial fraud alert stays on your credit file for one year and asks businesses to verify your identity before extending new credit. A credit freeze goes further: the bureau cannot release your credit report without your express authorization. Federal law bars the bureaus from charging to place or lift one. You are also entitled to one free credit report a year from each of Equifax, Experian and TransUnion. If you become a victim, the Kroll package includes a licensed investigator who works on your behalf to resolve the identity theft.