Was Pinger - USA hit by ransomware?

Pinger - USA was listed by the Hellcat 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 Hellcat ransomware group?

Hellcat 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 Pinger - USA breach?

Hellcat published data attributed to Pinger - USA (~111 GB), around 9M user records. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Pinger

listed as Pinger - USA · Claimed by Hellcat · listed 2 years ago

111 GB

Data size

9M user records

18m

Age

since listed · data leaked

Status timeline

ListedDec 25, 2024
Data leakeddate unknown

At a glance

Group: Hellcat
Status: Data leaked
Country: United States
Sector: Business Services
Listed on leak site: Dec 25, 2024
Data size: 111 GB
Records: 9M user

About the victim

AI dossier — public-source company profile

Pinger is a developer of mobile communication applications, notably Sideline and TextFree, which provide voice, messaging, and telephony services to users. The company operates as a software-as-a-service provider in the telecommunications sector.

Industry: Mobile Telecommunications & VoIP Services

Attack summary

Severity: critical — Confirmed exfiltration of 9+ million user records with PII (phone numbers, messages, communication metadata) at massive scale from a telecommunications platform, plus internal systems and source code. Data has been publicly released.

Hellcat claims to have breached Pinger and exfiltrated 111 GB of sensitive data including over 9 million user records, private messages, voice messages, internal tools, backend systems, and source code. The attacker publicly released all data after ransom was not paid.

critical

Data the group says was taken

AI dossier — extracted from the leak post

user records (9+ million)
private messages
voice messages
phone number lookup tool
notification sender tool
backend systems
source code

What the group claims

We have successfully breached Pinger, obtaining 111 GB of sensitive data. This includes over 9 million user records, private messages, voice messages, internal tools such as phone number lookup and notification sender, backend systems, and source codes. Since the ransom was not paid, all the data has been publicly released.

Sources

Victim sitepinger.com

Source

Indexed 2 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 Hellcat

Hellcat is a recently emerged ransomware group first observed in October 2024, operating with apparent financial motivations based on their targeting patterns across multiple high-value sectors. The group's origin and potential state affiliations remain unclear due to their recent emergence, though their broad geographic targeting spanning the United States, China, Germany, France, and Israel suggests either a sophisticated international operation or the use of ransomware-as-a-service infrastructure. Limited public documentation exists regarding Hellcat's specific attack methodologies, encryption techniques, or whether they employ double extortion tactics involving data exfiltration prior to encryption, as major cybersecurity firms and government agencies have yet to publish detailed technical analyses of their operations. With only 20 documented victims to date, the group has not yet conducted any widely publicized major campaigns or drawn significant law enforcement attention, though their targeting of technology, education, government, and business services sectors indicates a focus on organizations likely to possess valuable data and have strong incentives to pay ransoms. Hellcat remains active as of current reporting, though their limited operational footprint and recent emergence make long-term assessment of their capabilities and persistence difficult to determine. The group has been linked to 20 public disclosures across our corpus. First observed on a leak site on October 25, 2024; most recent post April 10, 2025. The operation is currently inactive.

Timeline of this disclosure

December 25, 2024Pinger - USA listed by Hellcaton the group's public leak site

Data size: 111 GB
Records: 9M user

Other recent disclosures by Hellcat

Hellcat has been linked to 20 public victims on Darkfield. A sample of the most recent:

See the full Hellcat dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 3,796 disclosures indexed across all operators we track. Geographically, Pinger - USA is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Hellcat means Pinger - USA 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 Hellcat'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.