Were you recently affected by a data breach?
AECOM, a multibillion-dollar infrastructure consulting firm, may have suffered a data breach after a hacker group claimed responsibility for an attack allegedly involving over a terabyte of data. Attorneys are investigating.
Who was affected:
Impacted Data:
Not yet publicly disclosed
AECOM, a multibillion-dollar infrastructure consulting company based in Texas, may have suffered a data breach. Attorneys working with Class Action U are looking into whether current and former employees and clients had personal information put at risk.
Large engineering and infrastructure firms handle sensitive employee, client, and project data at scale, and they have a responsibility to keep that information secure from unauthorized access.
According to a September 17, 2026 post on a dark web monitoring site, a hacker group calling itself Metaencryptor claimed to be responsible for an attack on AECOM, alleging that approximately 1.22 terabytes of data were taken. A separate cybersecurity blog similarly reported that Metaencryptor claimed credit for the incident. At the time of these reports, no additional information had been made public about which systems were accessed, what specific data was involved, or how many individuals may have been affected.
Large professional services and engineering firms are frequent ransomware targets because they store enormous volumes of employee records, client contracts, and financial data across many business units and geographies, often making a single successful intrusion far more consequential than a breach at a smaller organization. The scale claimed in this incident, over a terabyte of data, is consistent with the kind of large-scale exfiltration ransomware groups often use as leverage in extortion attempts.
State and federal breach notification laws generally require a company to investigate a suspected intrusion, determine the scope of any compromised data, and notify affected individuals within a defined window once that scope is confirmed. Until AECOM completes that process and issues any formal notifications, the exact nature and size of this incident remains unconfirmed.
The suspected attack was estimated to have occurred on or around September 17, 2026, the same day the dark web post naming AECOM first appeared. AECOM has not yet publicly confirmed the incident or provided a specific breach timeline.
The specific categories of information involved in this alleged breach have not been publicly disclosed. Large infrastructure and engineering firms like AECOM typically maintain data such as employee names, Social Security numbers, contact information, and client or project-related records, but it is not yet known which, if any, of these data types were exposed in this specific incident.
If you are a current or former AECOM employee or client, there are steps you can take while more information becomes available:
If it is later confirmed that personal information was exposed in this incident, those affected may have legal options to pursue compensation for the harm caused.
Contact us at Class Action U, where we’ll connect you with a lawyer skilled in class action lawsuits. If you’ve been contacted about this breach, received notice, or discovered you were impacted, fill out our quick, easy, and secure form to sign up. There is no cost to reach out to our legal partner and no obligation after speaking with someone from our team.
A data breach occurs when sensitive, confidential, or protected information is accessed, stolen, or disclosed without authorization. Data breaches often occur through phishing emails, malware, weak passwords, insider threats, or unsecured databases. Indicators of a data breach can include unexpected password resets, suspicious account activity, unauthorized transactions, or notifications from companies about compromised information.If you suspect your data has been compromised, you must take measures and act quickly. Change passwords, enable two-factor authentication, review your financial accounts for unusual activity and consider freezing your credit.
Once stolen, your personal information may be sold on the dark web or used for identity theft and financial fraud. In some cases, hackers use the data to extort companies or launch further attacks. Victims often face long-term risks, including damage to credit and privacy.
If you receive a data breach notification, don’t ignore it. Immediately change passwords for the affected account and any others that share credentials. Enroll in any free credit monitoring services offered and monitor financial statements closely.
To pursue a data breach claim, you’ll need documentation showing your information was compromised and proof of resulting harm, such as fraudulent charges, credit score damage, or identity theft reports. Notification letters, financial records, and communication with the breached company can help support your claim.
Yes. If a company fails to protect consumer data or delays notifying victims, it may be held liable under state and federal privacy laws. Many victims join class action lawsuits to recover financial losses and hold negligent organizations accountable.
Data breach settlements vary widely depending on the size of the breach, type of data compromised, and damages suffered by victims. Payouts may include cash compensation, identity theft protection, or reimbursement for losses. Many settlements range from a few hundred to several thousand dollars per person. A skilled data breach lawyer can guide victims through the complex legal process, ensuring their rights are protected. If you’ve received a data breach notification or believe your personal data was exposed, you may be eligible for compensation. Contact Class Action U to learn more about how to join a data breach lawsuit and understand the process of filing.
