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high severity June 11, 2025 · 4 min read Unverified claim — what this is

cisin.com Listed by J Ransomware Group

If you are a customer of cisin.com, here’s what is being claimed, and what it would mean for you.

cisin.com was listed on a ransomware/extortion leak site. The group claims to have stolen internal data. This is the group's claim, not a confirmed finding.

cisin.com Listed by J Ransomware Group

On June 11, 2025, the website of Indian IT services firm Cyber Infrastructure Pvt. Ltd. (cisin.com) appeared on the leak site operated by the J Ransomware Group, with the attackers claiming to have exfiltrated internal files during a ransomware incident.

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Reported Details of the Breach

Public reporting indicates that the J Ransomware Group added cisin.com to its data leak portal on that date. The company, which provides software development, mobile app development, AI, and cloud solutions to clients ranging from startups to large enterprises, has not yet disclosed the exact number of records involved or the specific internal files taken. Available reporting describes the exposed material as internal files exfiltrated in a ransomware attack, though full details of the data types remain unconfirmed by the victim organization.

CIS employs more than 1,000 experts and operates with a mix of offshore and onshore engagement models from its headquarters in India and additional global offices. No official statement from the company confirming the breach timeline or scope had been widely reported as of the leak posting.

Why This Matters for You and Your Family

When an IT services provider like CIS suffers a breach, the ripple effects often reach ordinary customers whose data passes through the company’s systems. If you or your family have ever used services from a business that works with CIS, your personal information could be among the internal files now in attackers’ hands. Internal files frequently contain contracts, employee records, client contact lists, project documentation, and credentials that can be repurposed for identity theft or further attacks.

Even when the exact number of affected individuals is listed as unknown, families should assume their data may be exposed. A single leaked email, phone number, or reused password from one vendor can give criminals the starting point they need to target your household.

The Doxxing and Identity-Chain Risks

Ransomware groups rarely stop at the first dataset they obtain. Once internal files leave a company like CIS, attackers can comb them for employee names, client contacts, email addresses, and system credentials. These pieces are then linked together across other breaches to build detailed profiles. A credential found in this leak can be tested against your personal email, banking apps, or social media, creating a chain that leads directly to you and your family.

Credential leaks like this one cascade into account takeovers and doxxing chains, especially when gaming accounts belonging to children reuse the same passwords or recovery emails. What begins as a corporate ransomware incident can quickly become a personal privacy nightmare when handles, addresses, and phone numbers are correlated.

J Ransomware Group’s Known Track Record

Public reporting attributes the attack to the J Ransomware Group. The group emerged in recent years and has targeted organizations across multiple sectors by gaining initial access, exfiltrating data, and then publishing samples on their leak site when victims do not meet extortion demands. Their typical playbook involves ransomware deployment followed by threats to release stolen files unless payment is made, a pattern seen in prior incidents where they listed companies on dark-web portals to increase pressure.

What to do

  • Run a DoxxScan to map every link between your emails, phone numbers, usernames, and real-world identity so you can see exactly what this claimed breach connects to.
  • Rotate any password you used at cisin.com or any CIS-related service, then enable 2FA through an authenticator app rather than SMS.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next leak exposing your family is caught and addressed in hours instead of months.
  • Cover the household with DoxxScan family coverage that includes dependents and children’s gaming accounts, which often chain back to the same addresses and recovery details.
  • Let remediation specialists handle the follow-up work, including takedown requests across data brokers and platforms where your information surfaces.

The incident shows that even specialized IT firms can become gateways to personal data exposure, making proactive steps essential rather than reactive. Start your DoxxScan trial today and use its continuous monitoring across 13.1B+ breach records and 100+ platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and family coverage that includes children’s gaming accounts. One timely scan and response can break the chain before criminals turn corporate leaks into family doxxing.

What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo
value redacted in this samplephone, household, property recordsBeenVerified
value redacted in this sample582 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach
unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

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Report details & sourcing

Unverified claim — what this report is
This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.
Editorial & sourcing policy
GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.
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