Summary
On October 2, 2025, the ransomware group Sinobi publicly claimed responsibility for a cyberattack against
Immaculate Heart of Mary (ihmbrooklyn.org), a Brooklyn-based church. The group issued a statement threatening to release sensitive data unless negotiations are initiated.
Incident Report
| Field | Details |
|---|---|
| Target | Immaculate Heart of Mary |
| Domain | ihmbrooklyn.org |
| Country | USA |
| Attacking Group | Sinobi |
| Date Reported | October 2, 2025 |
| Threat Actor Statement | “Immaculate Heart of Mary Home, associated with the Immaculate Heart of Mary Roman Catholic Church, has been serving the Brooklyn community since 1893 with a focus on faith and unity. The church offers various ministries including catechesis, consolation support, and food pantry services, aimed at meeting the spiritual and practical needs of its congregants. St. Joseph the Worker Catholic Academy is part of the community, providing education in a Catholic environment to students of all faiths. The organization prioritizes connecting with its members through live Mass services and updating them on important parish information.” |
Recommended Security Actions
Ransomware attacks are increasingly targeting both enterprise and mid-sized organizations across all sectors. The following steps are critical to reduce impact and prevent future incidents:
- Monitor continuously: Use DeXpose’s dark web and infostealer monitoring platform to detect breached credentials, leaked databases, and threat actor chatter in near real-time—before damage spreads internally.
- Conduct a compromise assessment: Immediately initiate a full incident review to determine how attackers infiltrated your network, what data may have been exfiltrated, and whether any persistence mechanisms remain active.
- Validate your backups: Ensure that your backups are current, encrypted, and stored offline. Utilize immutable backup solutions to defend against ransomware encryption and deletion attempts.
- Apply threat intelligence: Integrate external threat feeds, including DeXpose-provided indicators of compromise (IOCs), into your SIEM or XDR platforms for real-time alerting and correlation.
- Harden employee defenses: Run phishing simulations and enforce multi-factor authentication (MFA) across all access points. Attackers often exploit weak or reused credentials sourced from the dark web.
- Engage professional response teams: Involve cybersecurity incident response experts, threat analysts, and legal counsel before initiating any dialogue with ransomware groups or ransom brokers.
How DeXpose Helps You Stay Ahead
At DeXpose, we specialize in early detection and proactive defense. Our hybrid threat intelligence solution combines automated deep/dark web crawling, Telegram and forum monitoring, and real analyst verification to deliver:
- Continuous scanning of ransomware group leak sites, stolen credential markets, and malware log dumps
- Timely alerts for breaches linked to your domains, email addresses, and key personnel
- Intelligence correlation that connects leaked credentials to infostealer malware infections, often weeks before a public ransom demand
- Real-time visibility into supply chain and third-party exposures through passive surveillance of dark web channels
Don’t wait for public disclosure or ransom notices—gain visibility into your cyber exposure now.
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Disclaimer
DeXpose does not engage in the exfiltration, hosting, redistribution, or purchase of stolen data. All breach information reported here is collected from publicly accessible dark web sources and threat intelligence platforms.
Our mission is to equip organizations with early-warning indicators, contextual threat insights, and actionable intelligence that help them secure their digital assets against evolving cyber threats.
