[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f3uhp6ivegreq0":3},{"success":4,"breach":5},true,{"_id":6,"name":7,"title":8,"slug":9,"domain":10,"breachDate":11,"addedDate":12,"modifiedDate":13,"contentUpdatedAt":13,"source":14,"sourceUrl":15,"sourceUrls":16,"pwnCount":19,"affectedCount":19,"affectedCountStatus":20,"affectedCountLowerBound":21,"affectedCountUnit":22,"hasEnglishDescription":4,"severity":23,"dataClasses":24,"description":30,"seoTitle":31,"seoTitleEn":32,"seoDescription":31,"seoDescriptionEn":33,"logoUrl":34,"isVerified":4,"isSensitive":4,"isSpamList":35,"isMalware":35,"company":36},"6a6fd883169500c028d4a089","MasTec2025","MasTec Data Breach","mastec-2025","mastec.com","2025-08-09T00:00:00.000Z","2026-08-02T23:53:39.052Z","2026-08-02T23:57:19.599Z","Personal-data breach reported to the Texas Attorney General","https:\u002F\u002Foag.my.site.com\u002Fdatasecuritybreachreport\u002Fapex\u002FDataSecurityReportsPage",[15,17,18],"https:\u002F\u002Fwww.mastec.com\u002Fcontact\u002F","https:\u002F\u002Fwww.sec.gov\u002Fedgar\u002Fbrowse\u002F?CIK=15615&owner=exclude",25220,"known",null,"people","Medium",[25,26,27,28,29],"Names","Physical addresses","Social security numbers","Financial information","Dates of birth","\u003Cp>\u003Cstrong>The 2025 MasTec data breach\u003C\u002Fstrong> is a security incident reported by the infrastructure company to the Texas Attorney General involving personal information belonging to 25,220 people. The official record places the event between August 9 and August 16, 2025.\u003C\u002Fp>\u003Cp>MasTec is a US engineering and construction company working across communications, energy and civil infrastructure. Its official website and SEC record confirm the mastec.com domain and the MasTec, Inc. corporate identity.\u003C\u002Fp>\u003Ch2>How was the incident confirmed?\u003C\u002Fh2>\u003Cp>Texas Attorney General record BR-0005098 publishes the MasTec, Inc. report, including incident and discovery dates, affected information types, total population and consumer notification method.\u003C\u002Fp>\u003Cp>MasTec's official contact page uses the same street, city and ZIP code in Coral Gables as the regulator filing. The Texas entry lists the 12th floor while the current company website lists the 10th floor, so this minor address difference is preserved rather than silently reconciled.\u003C\u002Fp>\u003Ch2>When did the incident occur?\u003C\u002Fh2>\u003Cp>According to the official entry, the breach began on August 9, 2025 and ended on August 16. MasTec discovered it on April 23, 2026, and the Texas Attorney General entry was published on June 9, 2026.\u003C\u002Fp>\u003Cp>Public sources do not explain the interval between the event and discovery, the affected system or the investigation process. The initial access method, technical cause and threat actor are therefore not presented as established facts.\u003C\u002Fp>\u003Ch2>What information was affected?\u003C\u002Fh2>\u003Cp>The Texas record lists names, physical addresses, Social Security numbers, financial information such as bank-account or payment-card details, and dates of birth. The same fields should not be assumed to apply to every person.\u003C\u002Fp>\u003Cp>The official filing does not list passwords, usernames, driver's license numbers, health data or employment history. It also does not identify whether the affected people were employees, former employees, contractors, customers or another relationship group.\u003C\u002Fp>\u003Ch2>How many people were affected?\u003C\u002Fh2>\u003Cp>The filing reports a nationwide total of 25,220 people. The 4,827 Texas residents in the same entry are included within that total and should not be added to it.\u003C\u002Fp>\u003Cp>MasTec reported that affected consumers were notified by U.S. Mail. The public regulator entry does not disclose which fields applied to each person or provide the contents of individual notices.\u003C\u002Fp>\u003Ch2>What are the potential risks?\u003C\u002Fh2>\u003Cp>Names, addresses, dates of birth and Social Security numbers can be combined for identity theft, fraudulent account opening and targeted phishing. Financial information also warrants attention for unfamiliar account activity and payment fraud.\u003C\u002Fp>\u003Cp>Social Security numbers remain useful for a long time, so monitoring should not stop merely because the incident is older. A message containing a correct address or date of birth does not prove that it came from MasTec or a financial institution.\u003C\u002Fp>\u003Ch2>What should affected people do?\u003C\u002Fh2>\u003Cp>Notice recipients should regularly review credit reports, new-account inquiries, bank activity and card statements. Free credit-freeze or fraud-alert options can be considered, and unfamiliar transactions should be reported promptly to the relevant institution.\u003C\u002Fp>\u003Cp>Unexpected links claiming to come from MasTec, a bank or a government agency should be verified independently through a known official channel. Retain the mailed notice and do not provide identity-verification details through unsolicited communications.\u003C\u002Fp>","","MasTec Data Breach (25.2 Thousand People Affected)","The MasTec data breach affected 25,220 people and involved identity, address and financial information. Review the timeline, data types and safety steps.","\u002Fuploads\u002Flogo\u002Fmastec-official.webp",false,{"name":37,"sector":38,"country":39,"website":10,"websiteArchiveUrl":31,"websiteStatus":40,"websiteCheckedAt":12},"MasTec, Inc.","Construction","United States","active"]