Was Tyler Technologies hit by ransomware?

Tyler Technologies was listed by the Ransomexx 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 Ransomexx ransomware group?

Ransomexx 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 Tyler Technologies breach?

Ransomexx published data attributed to Tyler Technologies. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Tyler Technologies

Claimed by Ransomexx · listed 6 years ago

70m

Age

since listed · data leaked

Status timeline

ListedSep 23, 2020
Data leakeddate unknown

At a glance

Group: Ransomexx
Status: Data leaked
Country: United States
Sector: Information Technology
Listed on leak site: Sep 23, 2020

About the victim

AI dossier — public-source company profile

Tyler Technologies is a leading provider of integrated software and technology services to the public sector, serving local and state governments across the United States and beyond. The company offers solutions spanning courts, public safety, tax, assessment, appraisal, and municipal administration. It is one of the largest software companies in the US focused exclusively on the public sector.

Industry: Government Technology Software & Services
Address: 5101 Tennyson Parkway, Plano, TX 75024, United States
Employees: 5001-10000
Founded: 1966

Attack summary

Severity: critical — Tyler Technologies serves thousands of local and state government entities; a confirmed data publication event risks exposure of sensitive government operational data, citizen PII, court records, and public safety information at significant scale, meeting the critical threshold for regulated/sensitive data affecting critical public-sector infrastructure.

RansomExx claims to have attacked Tyler Technologies, with the incident disclosed at a data_published status, indicating data exfiltration and/or publication of stolen files. No specific ransom amount or data volume was stated in the available post.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Government client data
Internal business documents
Employee records
Source code or proprietary software assets
Financial records

Sources

Victim sitetylertech.com

Source

Indexed 6 years 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 Ransomexx

RansomEXX is a financially motivated ransomware operation that emerged in May 2020, targeting organizations across multiple sectors with a focus on extracting ransom payments through encryption and data theft tactics. The group is believed to operate independently rather than as a Ransomware-as-a-Service model, with suspected ties to Russian-speaking cybercriminals based on code analysis and operational patterns observed by security researchers. RansomEXX operators typically gain initial access through exploiting public-facing applications, particularly targeting vulnerable VPN appliances and remote desktop services, before deploying their custom ransomware payload which uses strong encryption algorithms and is often preceded by data exfiltration to enable double extortion schemes where stolen data is threatened to be publicly released if ransom demands are not met. The group has been responsible for several high-profile attacks including incidents against government entities and major corporations, with documented cases involving ransoms in the millions of dollars, though specific victim details are often kept confidential by affected organizations. Based on recent threat intelligence reporting, RansomEXX continues to maintain active operations as of 2024, with ongoing campaigns targeting the technology and healthcare sectors primarily in the United States and Europe. The group has been linked to 86 public disclosures across our corpus. First observed on a leak site on May 14, 2020; most recent post June 20, 2026. The operation is currently inactive.

Also tracked as: Ransom X, Defray777, Defray-777, Defray 2018.

Timeline of this disclosure

September 23, 2020Tyler Technologies listed by Ransomexxon the group's public leak site

Other recent disclosures by Ransomexx

Ransomexx has been linked to 86 public victims on Darkfield. A sample of the most recent:

See the full Ransomexx dossier →

Sector and geography

This disclosure adds to ransomware activity in the Information Technology sector, which has 69 disclosures indexed across all operators we track. Geographically, Tyler Technologies is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Ransomexx means Tyler Technologies 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 Ransomexx'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.