Was Third Coast Bancshares hit by ransomware?

Third Coast Bancshares was listed by the Incransom ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Incransom ransomware group?

Incransom is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Third Coast Bancshares breach?

Incransom published data attributed to Third Coast Bancshares. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Third Coast Bancshares

Claimed by Incransom · listed 3 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedAug 18, 2026
Data leakeddate unknown

At a glance

Group: Incransom
Status: Data leaked
Country: United States
Sector: Financial Services
Listed on leak site: Aug 18, 2026

About the victim

AI dossier — public-source company profile

Third Coast Bancshares (NASDAQ: TCBX) is a publicly traded financial services company operating in the U.S. banking sector. No additional details are available from the leak post or public sources provided.

Industry: Financial Services — Community Banking

Attack summary

Severity: high — Claimed exfiltration from a major publicly traded U.S. financial institution with alleged regulatory and compliance violations; however, no proof files, screenshots, or specific data inventory are provided. The rhetoric is sensationalized and the post reads more as a short-seller attack or disinformation campaign than a standard ransomware disclosure.

The threat actor claims to have exfiltrated data from Third Coast Bancshares and characterizes it as 'one of the largest data breaches in the history of the U.S. financial sector.' The post alleges misconduct including regulatory non-compliance, data manipulation, and corruption, but does not specify what data was taken or provide technical proof of exfiltration.

high

Data the group says was taken

AI dossier — extracted from the leak post

Financial records
Client data
Regulatory documents

What the group claims

While Third Coast Bancshares (NASDAQ:TCBX) shares continue to rise rapidly and reach new highs, its leadership is concealing one of the largest data breaches in the history of the U.S. financial sector. This situation raises serious questions about the company’s conduct. In the near future, we intend to publish a comprehensive analytical report examining the TCBX activities. The public will then have an opportunity to assess the practices carried out by the company, including violations of applicable laws and regulations, as well as the conduct of certain shareholders and business partners. Our report will also examine allegations involving individuals connected to financial-sector regulators and law enforcement. Corruption, manipulation of data, regulatory non-compliance, and the submission of potentially misleading reports represent only a small part of the concerns we intend to address. We believe the time has come to initiate short positions. Our forthcoming publications are expected to raise significant questions about the company and could have broader implications for confidence in the U.S. financial sector. As for clients and stakeholders of the financial institution, We strongly recommend that clients safeguard their funds and consider withdrawing them in the near term. Stay tuned for further updates and the release of our detailed findings.

Sources

Leak posthttp://incblog6qu4y4mm4zvw5nrmue6qbwtgjsxpw6b7ixzssu36tsajldoad.onion/blog/disclosures/6a7c83d09cd108bf2661c096

Source

Indexed 3 hours ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About Incransom

Incransom is a ransomware group that emerged in August 2023, operating with primarily financial motivations as evidenced by their targeting of high-value sectors across multiple developed nations. The group's origin and specific affiliations remain undocumented by major threat intelligence organizations, though their operational patterns suggest they likely operate independently rather than as a ransomware-as-a-service model. With 734 documented victims, Incransom has demonstrated a preference for targeting organizations in the United States, Canada, United Kingdom, Germany, and Australia, with particular focus on healthcare, technology, business services, and manufacturing sectors, though their attack methodology and specific technical capabilities have not been extensively documented by established security researchers or government agencies. The group's notable campaigns and specific high-profile victims have not been publicly detailed by CISA, FBI, Mandiant, or other reputable threat intelligence sources, suggesting either operational security effectiveness or limited visibility into their most significant operations. Based on available intelligence, Incransom appears to remain active as of recent reporting periods, though comprehensive analysis of their current operational status requires additional documentation from established threat intelligence sources. The group has been linked to 1,760 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post August 18, 2026. The operation is currently active.

Also tracked as: inc ransom, INC.

Timeline of this disclosure

August 18, 2026Third Coast Bancshares listed by Incransomon the group's public leak site

Other recent disclosures by Incransom

Incransom has been linked to 1,760 public victims on Darkfield. A sample of the most recent:

See the full Incransom dossier →

Sector and geography

This disclosure adds to ransomware activity in the Financial Services sector, which has 1,194 disclosures indexed across all operators we track. Geographically, Third Coast Bancshares is reported in United States, a country with 3,162 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Incransom means Third Coast Bancshares appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on Incransom's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.