Teco Listed by sinobi Ransomware Group

On March 17, 2026, Teco HVAC, LLC appeared on the leak site of the sinobi ransomware group. The Maryland-based heating, cooling, and plumbing company, which serves customers across the Baltimore-Washington corridor and Northern Virginia, had internal files exfiltrated during a ransomware attack. While the exact number of people whose information was taken remains unknown, any customer, employee, or vendor who provided personal details to Teco over the past two decades could be affected.

Confirmed Details from Public Reporting

Public reporting indicates that sinobi posted proof of the breach on its dark-web leak site, listing Teco HVAC as a victim. The company, founded in 2002, specializes in residential and commercial HVAC and plumbing services. Available reporting describes the stolen material as internal files exfiltrated before encryption. No confirmed total of records or specific customer list size has been published. The leak site entry carries the identifier 69b9968d6387a4c9a2864509 and remains active as of the latest available data.

Why This Matters for You and Your Family

If you or anyone in your household has ever hired Teco for furnace repair, air-conditioning service, plumbing work, or maintenance since 2002, your contact information, address, phone number, email, and possibly payment details may now sit in an attacker’s archive. Names, addresses, phone numbers, and email addresses are the basic building blocks attackers need to launch identity theft, phishing campaigns, or doxxing attempts against you and your family. A single exposed record can lead to months of spam, fraudulent loan applications, or targeted scams that feel personal because the attackers already know where you live and what services you use.

The Doxxing and Identity-Chain Risks

Stolen company files often contain spreadsheets that link customer names to physical addresses, phone numbers, email accounts, and sometimes notes about family members or children. These connections allow attackers to build an identity chain that jumps from one online handle to another. A gaming username tied to a family email, for instance, can be traced back to the same household that once called Teco for a leaky pipe. Credential leaks like this one frequently cascade into account takeovers on gaming platforms, social media, and email, turning a local service breach into a broader privacy nightmare for you and your children.

Sinobi Ransomware Group’s Known Track Record

Public reporting attributes the sinobi group with emerging in late 2024. The gang has claimed responsibility for attacks on dozens of organizations, primarily small and mid-sized businesses in the United States. Its typical playbook involves initial access through phishing or exploited remote desktop services, followed by data exfiltration and deployment of ransomware. After encryption, the group demands payment and threatens to publish stolen files on its leak site if the victim does not meet the deadline. Extortion tactics focus on both operational disruption and public exposure of sensitive internal documents.

What to do

• Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, then use the included no-subscription cleanup of data broker records tied to the Teco breach.
• Rotate any password you ever used when creating an account or paying Teco and enable 2FA through an authenticator app on every service where that password was reused.
• Enable continuous DoxxScan monitoring across 15.4B+ breach records and 100+ platforms so the next leak exposing your family is caught in hours rather than months.
• Cover the entire household with DoxxScan family protection that extends to dependents and children’s gaming accounts that can chain back to the same address or parent email.
• Let remediation specialists handle takedown requests for any exposed personal records that surface on data broker or doxxing sites in the coming weeks.

The Teco HVAC breach is a reminder that even local service companies hold information that can expose entire families when stolen. Taking deliberate steps now limits how far attackers can travel down the identity chain that begins with this incident. DoxxScan by GalaxyWarden delivers continuous monitoring across 15.4 billion breach records and more than 100 platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that includes children’s gaming accounts. Start your DoxxScan trial today to close the gaps this breach created.