maysecc.com Listed by lockbit3 Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

Ransomware groups continue to target mid-sized firms across essential industries, using data theft and public leak-site pressure as leverage. In that broader pattern, a listing tied to maysecc.com appeared in early 2023, drawing attention to a long-established construction business in Tennessee and to the unresolved questions that often follow such claims.

Public reporting on 12 February 2023 stated that maysecc.com had been listed by the LockBit3 ransomware group, with internal files described as having been exfiltrated. The number of people affected remains unknown, and many operational details have not been disclosed. For customers, partners, and employees, the listing itself is enough reason to understand what is known, what is claimed, and what practical steps follow.

Inside the incident

According to the available record, maysecc.com was listed by LockBit3 on or around 12 February 2023. The reported summary identifies the organisation as Mayse Construction, a sewer-line construction company based at 8011 Hixson Pike, Hixson, Tennessee, operating since 1985. The facts state that internal files were exfiltrated in a ransomware attack. No confirmed figure for individuals affected has been published, and public detail does not include the precise date of initial access, the entry method, the volume of data taken, or whether systems were encrypted alongside the theft.

Because those elements are undisclosed, the incident is best understood through what has been asserted rather than through a full technical timeline. The leak-site listing constitutes a claim by the group that it held and intended to release material belonging to the company. Independent confirmation of the full scope, or of any subsequent release, is not part of the facts provided here.

The group behind it: lockbit3

LockBit3 is a well-documented ransomware operation that has, for years, run a Ransomware-as-a-Service model. Affiliates gain access to victim networks, exfiltrate data, and deploy encryption, after which the group typically posts the victim on a dedicated leak site and sets a deadline for payment. The dual pressure of operational disruption and threatened publication of stolen files is central to its approach. LockBit variants have been linked to attacks across manufacturing, professional services, healthcare, and construction worldwide; the group has repeatedly updated its tooling and negotiation portals to maintain pressure on victims.

In this case, the facts establish only that LockBit3 listed maysecc.com and that internal files were described as exfiltrated. No specific statements by the group about this victim beyond that listing are recorded in the material at hand. Claims made on ransomware leak sites should be treated as unverified until corroborated by the organisation or by independent investigation.

About maysecc.com

Mayse Construction, associated with the maysecc.com domain, is a construction firm specialising in sewer-line work and based in Hixson, Tennessee. It has operated since 1985. Companies in this sector routinely manage project documentation, contractor and subcontractor records, site plans, permitting materials, invoicing, and employee information. They also interact with municipalities, utilities, and private clients whose own data may appear in shared files.

A breach affecting such an organisation matters because construction firms sit at the intersection of physical infrastructure and administrative systems. Disruption or exposure can affect ongoing projects, contractual relationships, and the personal or commercial data of people who never directly interact with the company’s public website. The consequential nature of the incident therefore extends beyond the firm itself to anyone whose details appear in internal project or business files.

What data was at risk

The facts name the exposed material as internal files exfiltrated in a ransomware attack. No further breakdown—such as employee records, customer lists, financial documents, or engineering drawings—is provided, and the number of people affected is unknown. Exact contents therefore remain unconfirmed.

Organisations of this type typically hold personnel files, payroll data, vendor contracts, project correspondence, insurance information, and client contact details. They may also store maps, as-built drawings, and compliance records related to sewer and utility work. While those categories are common in the sector, they must not be read as a confirmed inventory of what LockBit3 obtained in this incident. Only the general description of internal files is established in the public summary.

What's at stake

For individuals whose information may have been among the internal files, the practical risks include targeted phishing, social-engineering attempts that reference real projects or colleagues, and potential misuse of any personal or financial details that were stored. Even limited contact data can be combined with other breaches to increase credibility of fraud. For the organisation, stakes include operational interruption, contractual and regulatory follow-up, reputational harm with clients and municipalities, and the cost of investigation and remediation—none of which are quantified in the available facts.

Because the scale remains unknown, it is not possible to state how widely these risks apply. The prudent assumption for anyone with a past or present relationship to the company is that some internal material may have left the organisation’s control, and that monitoring and basic hygiene remain warranted.

If your data was in this claimed breach

If you have worked with, been employed by, or otherwise shared information with Mayse Construction or maysecc.com, treat the listing as a prompt to act rather than as proof that your specific records were taken. Change passwords on accounts that may have reused credentials connected to work email, enable multi-factor authentication where available, and watch for unexpected messages that reference construction projects, invoices, or internal staff names. Review financial and credit activity if you ever provided sensitive personal data to the firm. Keep records of any suspicious contact.

You can also run a free exposure scan of your email address to check whether it has already appeared in known breach datasets. That step does not confirm or deny inclusion in this specific incident, but it helps you see whether your address is circulating more widely and where to focus further attention.

AICompiled with AI assistance from public sources and published under our editorial standards.