UPDATED: August 18, 2026

Advanced Power Services Data Breach

Advanced Power Services (NA) LLC, a Boston-based power generation infrastructure company, recently notified individuals that an unauthorized third party accessed a portion of its computer network between August and November 2025, exposing some of their personal information.

Advanced Power Services

Date of Breach: August to November 2025

Who was affected:

Clients of Advanced Power Services

Impacted Data:

Personal information (specific data elements not publicly disclosed by the company)

Experienced a BREACH?

Advanced Power Services (NA) LLC, a Boston, Massachusetts-based developer and manager of power generation infrastructure projects, recently notified affected individuals that an unauthorized third party gained access to a portion of its computer network, potentially exposing personal information. Companies that maintain sensitive personal data, including energy and infrastructure firms handling employee and vendor records, have a responsibility to safeguard that information and to notify those impacted when a security incident occurs.

Advanced Power Services’s Data Breach Investigation

According to the notification letter Advanced Power Services (NA) LLC sent to affected individuals, the company detected suspicious activity within a portion of its computer network on November 12, 2025. The company promptly engaged third-party cybersecurity experts to investigate and remediate the activity. That investigation determined that an unauthorized third party had access to portions of the network between August and November 2025. Following the initial investigation, the company engaged a separate data-review firm to analyze the contents of the impacted files and worked to identify accurate contact information for notifying affected individuals, a process that took several additional months to complete.

Energy infrastructure companies are increasingly targeted by cybercriminals due to the sensitive operational and personnel data they maintain, along with the potential disruption a successful intrusion can cause. When personal information such as names, Social Security numbers, or financial account details is exposed in an incident like this, affected individuals face an elevated risk of identity theft, fraudulent account openings, and targeted phishing attempts that can persist long after the initial notification.

The multi-month gap between the detection of unauthorized activity and the issuance of notification letters reflects a common pattern in data breach investigations: companies typically must complete a forensic review, determine the full scope of compromised data, and verify accurate contact information for every affected individual before notification can be sent, a process that regulatory frameworks like the Massachusetts data breach notification law are designed to accommodate rather than penalize.

When Did This Breach Occur?

Advanced Power Services (NA) LLC detected suspicious activity in a portion of its computer network on November 12, 2025. The subsequent investigation determined that an unauthorized third party had access to the network from August 2025 through November 2025.

What Information Was Breached?

The company’s notification letter did not specify the exact categories of personal information involved for each recipient. Individuals who received a letter from Advanced Power Services (NA) LLC should review it closely, as it may list the specific data elements affecting their own records.

What You Can Do

Advanced Power Services (NA) LLC is offering affected individuals a complimentary membership to Experian’s IdentityWorks identity protection service. Consider taking the following steps to protect yourself:

Enroll in the complimentary Experian IdentityWorks membership referenced in your notification letter before the enrollment deadline.
Place a fraud alert or security freeze on your credit files with Equifax, Experian, and TransUnion.
Review your financial account statements regularly for unauthorized activity.
Request a free copy of your credit report at annualcreditreport.com and check it for accounts you don’t recognize.
Stay alert for phishing emails, calls, or texts referencing this incident.

File a Data Breach Lawsuit Against Advanced Power Services

If you received a notice that your personal information was involved in the Advanced Power Services (NA) LLC data breach, you may have legal options available to you. 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.

Were you recently affected by a data breach?

Other Data Breaches

Sweetwater Development & Management Company

Date of Breach: Not publicly disclosed by Sweetwater; vendor incident first communicated July 30, 2026

Quest Builders Group

Date of Breach: Not publicly disclosed

Mungo Homes

Date of Breach: May 6, 2026

Frequently Asked Questions

What Should I Do If I Believe My Data Has Been Breached?

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.

What Happens to Your Data in a Data Breach?

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.

How Should I Respond to a Data Breach Notification?

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.

What Evidence is Needed for a Data Breach Claim?

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.

Can a Company Be Sued for a Data Breach?

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.

What is the Average Settlement in a Data Breach Lawsuit?

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.