Reported to the SC Attorney General on June 5, 2026.
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Check My Rights →MasTec was the subject of a data breach notification filed with the SC Attorney General. The AG filing was recorded on June 5, 2026.
MasTec operates as a prominent infrastructure construction and engineering corporation, managing complex telecommunications, energy, and utility projects across the United States. To support its extensive workforce, subcontractors, and corporate operations, the company routinely collects, processes, and stores a massive volume of highly confidential information. This includes comprehensive personnel records, extensive payroll and tax documentation, direct deposit banking details, and sensitive background check data for thousands of employees and project personnel who power its nationwide operations. In 2026, MasTec formally reported a major cybersecurity incident to the South Carolina Attorney General, signaling that unauthorized actors may have breached its enterprise network or third-party vendor systems. Incidents involving large-scale engineering and construction contractors typically center around sophisticated ransomware deployments, credential harvesting, or unauthorized exfiltration of corporate databases. Because companies in this sector frequently manage decentralized operations and vast digital supply chains, they represent lucrative targets for cybercriminals seeking to compromise proprietary corporate records and deeply personal employee data. Preliminary indications suggest that the compromised information likely encompasses critical personal identifiers, including Full Names, Social Security Numbers, Dates of Birth, Wage and Compensation Information, Tax Return Information, and Direct Deposit Account Details. The exposure of this specific combination of data creates severe, long-term risks for affected individuals. Social Security Numbers and tax records can be weaponized by bad actors to commit synthetic identity theft, open fraudulent lines of credit, or file unauthorized tax returns to intercept government refunds, while compromised direct deposit and wage details expose victims to immediate financial fraud and bank account takeover. As a corporate entity handling the private data of its workforce and contractors, MasTec is bound by strict legal duties under state consumer protection statutes, the Federal Trade Commission Act, and common-law negligence principles. These legal frameworks require companies to implement reasonable and appropriate cybersecurity safeguards, including robust network segmentation, multi-factor authentication, employee security awareness training, and regular vulnerability assessments. The occurrence of a successful breach strongly suggests a potential failure to maintain these standard security controls, leaving sensitive repositories vulnerable to malicious actors. Receiving an official data breach notification letter from MasTec serves as formal acknowledgment that your private information was compromised due to inadequate corporate security measures. Under the law, this notice establishes your legal standing to participate in a class action lawsuit aimed at holding the company accountable for failing to safeguard your data. You do not need to demonstrate that you have already suffered actual financial loss to seek legal recourse. Our firm evaluates and litigates these data breach cases on a strict contingency fee basis, meaning you pay absolutely nothing out of pocket and owe no legal fees unless we successfully recover compensation on your behalf.
Based on the data types reported in this filing, affected individuals face the following specific risks:
Your SSN is the master key to your identity. Once exposed, criminals can open new lines of credit, take out loans, or file taxes in your name.
Combined with a name and other leaked data, date of birth helps criminals pass identity verification questions at banks and government agencies.
Under the South Carolina data breach notification law, you may have a legal claim against MasTec if any of the following apply:
Applicable law: This breach was reported under the South Carolina data breach notification law, which establishes your right to seek damages from MasTec.
The hours spent responding to a data breach — canceling accounts, contacting credit bureaus, updating passwords, and investigating fraud — represent compensable economic harm in data breach litigation.
Once your SSN is exposed, protection becomes an ongoing expense. Plaintiffs in data breach settlements have recovered costs for credit freezes, identity protection subscriptions, and time spent dealing with fraudulent accounts — sometimes covering multiple years of exposure.
Fees charged to close and reopen accounts, issue replacement cards, or dispute fraudulent transactions are recoverable in data breach litigation. So are the costs of overdrafts, late payments, and credit damage caused by unauthorized activity.
Several state data breach laws provide for statutory minimum damages — fixed amounts recoverable per affected individual regardless of actual loss. These provisions exist specifically to make legal action viable for victims who have not yet experienced direct harm.
Note: an attorney general breach filing does not by itself establish a settlement fund, a payment amount, or a claim deadline. If an official settlement notice is later issued, rely on that notice for payment details and deadlines.
No. Under South Carolina data breach notification law and federal law, the unauthorized exposure of your personal data — regardless of whether it has been actively misused — can be sufficient grounds for a claim. The breach itself is the injury.
Nothing. The Law Office of David S. Harris handles data breach cases on contingency — you pay zero upfront and owe nothing unless compensation is recovered.
Immediately place a free credit freeze at all three bureaus (Equifax, Experian, TransUnion). A freeze blocks new accounts from being opened in your name. Then file a complaint with the FTC at IdentityTheft.gov and contact our office — SSN exposure is one of the most serious breach types.
Banks may reverse fraudulent charges, but they are not obligated to compensate you for time lost, stress, or indirect damages. A class action claim against the breached company can recover those additional categories of harm.
State statutes of limitations for data breach claims typically run 2–4 years from the date of the breach or its discovery. Because this breach was recently disclosed, the window is open — but acting early preserves your options and strengthens the case.
Accepting free credit monitoring from MasTec does not waive your right to pursue legal action unless you signed a specific release waiving claims. In most cases, victims who accepted monitoring can still file.
Not necessarily. Many data breach victims are never notified directly. If your personal information was held by MasTec during the relevant period, you may still qualify even without receiving a letter. A free eligibility review can confirm your status.
Received a notification letter from MasTec?
Read our dedicated guide — what the letter means and exactly what to do.
If you were affected by the MasTec data breach, you may be entitled to compensation. Submit your information below for a free attorney review — no obligation, no upfront cost.
Source: State Attorney General filing, SC
View Official AG Filing →MasTec breach?
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