Disclosure context

About Marketo

Marketo is a relatively obscure ransomware group that emerged in December 2021 with primarily financial motivations, having compromised 32 known victims across multiple sectors. The group's origin and affiliations remain largely undocumented in public threat intelligence reporting, with no confirmed information available regarding their country of origin, connections to other cybercriminal organizations, or operational structure. Their attack methodology, encryption techniques, and specific tactics have not been extensively documented by major security firms or law enforcement agencies, though their targeting patterns indicate a focus on high-value sectors including automotive, healthcare, and government organizations. The group has demonstrated a geographic preference for victims in the United States, Italy, and the United Kingdom, suggesting either regional operational capabilities or specific interest in these markets. Due to limited public documentation from authoritative sources such as CISA, FBI, or established security researchers, detailed information about notable campaigns, ransom demands, or specific attack vectors remains unavailable in the public domain. The current operational status of Marketo is unclear based on available public intelligence reporting. The group has been linked to 32 public disclosures across our corpus. First observed on a leak site on December 7, 2021; most recent post March 14, 2022. The operation is currently inactive.

Timeline of this disclosure

December 7, 2021millensys.com listed by Marketoon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 2,524 disclosures indexed across all operators we track. Geographically, millensys.com is reported in United States, a country with 7,392 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

← All victims

MillenSys

listed as millensys.com · Claimed by Marketo · listed 4 years ago

54m

Age

since listed · data leaked

Status timeline

Listed
Dec 7, 2021
Data leaked

At a glance

Group: Marketo
Status: Data leaked
Country: United States
Sector: Technology
Listed on leak site: Dec 7, 2021

About the victim

AI dossier — public-source company profile

MillenSys (millensys.com) is a technology company based in the United States. Based on the domain and sector classification, the company appears to operate in software or IT solutions. No further detail is available from the captured site or leak post.

Industry: Software & Technology Solutions

Attack summary

Severity: medium — Data is marked as published (data_published), suggesting confirmed exfiltration, but no details on the volume, sensitivity, or nature of the data are available from the leak post or public site, preventing a higher severity classification.

The Marketo group has listed millensys.com as a victim with a disclosed status of data_published, indicating data has been exfiltrated and published. No specific details about the nature of the data or attack vector are available from the captured leak post.

medium

Sources

Victim sitemillensys.com

Source

Indexed 4 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.