An East Tennessee air-purification manufacturer turned up on a ransomware leak site Monday. Ransomware.live indexed Greentech Environmental (greentechenv.com) as a claimed victim of the Interlock ransomware group at 2026-10-12 15:48 UTC (about 11:48 a.m. ET), with an estimated attack date the same day. ShellCodeX and other aggregators mirror the listing and flag it as an unverified claim.
Greentech's site says the company was founded in 2009 in Johnson City, Tennessee, and makes air-purification systems — portable units, commercial HVAC systems, and Greentech Filters with ODOGard — with a contact address at 6118 Kingsport Hwy, Johnson City. The site was up (HTTP 200) when we checked Tuesday morning. A separate GreenTech Environmental storefront run by GTE Sourcing LLC, also in Johnson City, describes itself as a new company that revived the name after the original business ceased operations in December 2025. The Interlock listing points to greentechenv.com; nothing public ties it to GTE Sourcing.
What's claimed, and what's confirmed
Claimed: Interlock's post says Greentech Environmental LLC "failed to fully secure and address the breach" and that the group is publishing confidential information — trade secrets, financial statements, employee data, operational plans, legal and governance documents, and manufacturing drawings. Those are actor assertions. The rest of the post is pressure language about lawsuits and lost patents, which is standard extortion copy.
Tracker context, not incident facts: Trackers note a leak-site screenshot but no data size. Nothing on the trackers shows how anyone got in, or that anyone did.
Not confirmed: As of Tuesday morning we found no statement from Greentech, no news report, and no state or federal filing. There is no confirmed encryption, no confirmed theft of drawings, financial, or employee data, no reported production or shipping disruption, and no word on any payment. Leak sites are extortion tools. Treat this as a claim until the company says otherwise.
Why it matters to manufacturers and industrial SMBs
Small manufacturers keep their crown jewels in a few places: CAD and manufacturing drawings, bills of materials, ERP, and a shared drive full of dealer pricing and HR files. An extortion post that names "manufacturing drawings" is aimed straight at that, because competitors and customers care about it.
The same setup is common in Johnson City, Chattanooga, Dalton, Rome, and across the Southeast: one Microsoft 365 tenant, a file server or NAS on the shop network, shared office PCs, and dealers who email purchase orders and payment changes. CISA and the FBI have reported Interlock getting in through drive-by downloads from compromised websites and fake browser or "fix this" prompts — so everyday web browsing on an office PC is part of the attack surface.
Clear takeaway
Treat the Interlock claim against Greentech Environmental as a continuity drill for small manufacturers. Protect drawings and ERP with MFA and an unchangeable backup, train staff to refuse fake update and "copy this command" prompts, and verify every bank or remittance change by phone.
Actions to take this week
- Require MFA on Microsoft 365 / Google Workspace, ERP, VPN, and dealer portals. Retire shared logins.
- Lock down browsers: block unapproved downloads and tell staff that real updates never ask them to paste a command into Windows.
- Confirm backups you can restore of CAD files, drawings, BOMs, ERP, and HR records — with one copy ransomware cannot alter or delete. Test a restore this month.
- Limit who can reach engineering files and keep shop-floor PCs off the same network segment as finance where you can.
- Brief AP and key dealers: new bank or remittance details get a call-back to a known number, never a reply to the email.
- Write a one-page incident card: who leads, who calls your insurer and IT provider, and how you reach dealers and the floor if email is down.
Brotherly Technology helps manufacturers, distributors, and industrial SMBs across Rome, Northwest Georgia, Chattanooga, and the Southeast turn ransomware headlines into a short readiness review — MFA, backups, vendor access, and payment-change controls. If you want a second set of eyes before the next claim lands, give us a call.
Sources:
- Ransomware.live: Greentech Environmental / Interlock. Discovered 2026-10-12 15:48 UTC; est. attack date 2026-10-12; website greentechenv.com; claim-level only.
- ShellCodeX: Greentech Environmental, Interlock claim. Listed Oct. 12, 2026; flagged as an unverified claim.
- Greentech Environmental (greentechenv.com). Company context: founded 2009 in Johnson City, TN; air purification and ODOGard filters; 6118 Kingsport Hwy. No incident acknowledgment cited here.
- CISA / FBI: #StopRansomware: Interlock (AA25-203A). General Interlock tradecraft, including drive-by downloads and ClickFix; not specific to Greentech.