Was NTU Alumni Club hit by ransomware?

NTU Alumni Club was listed by the thegentlemen ransomware operation (Singapore), 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 thegentlemen ransomware group?

thegentlemen 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 NTU Alumni Club breach?

thegentlemen published data attributed to NTU Alumni Club. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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NTU Alumni Club

Claimed by Thegentlemen · listed 16 days ago

16d

Age

since listed · data leaked

Status timeline

ListedAug 10, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: Singapore
Sector: Education
Listed on leak site: Aug 10, 2026

About the victim

AI dossier — public-source company profile

NTU Alumni Club is an independent association for graduates of Nanyang Technological University in Singapore. It operates as a networking and community platform offering members exclusive events, professional development opportunities, dining discounts, and access to physical facilities including clubhouses and co-working spaces.

Industry: Education & Alumni Networks
Address: 2 Handy Road, The Cathay, Singapore 229233

Attack summary

Severity: low — No proof files, screenshots, or data samples are advertised. The post contains only a generic description of the organization with no specifics on what was accessed, exfiltrated, or encrypted. No ransom demand. No operational disruption claimed.

The group claims to have compromised the NTU Alumni Club's systems. No specific details on encryption, exfiltration method, or data categories are provided in the leak post.

low

Data the group says was taken

AI dossier — extracted from the leak post

member profiles
contact information
membership records
event attendance data

What the group claims

ntualumni.org.sg zoominfo.com/c/ntu-alumni-club/447180090 The NTU Alumni Club is an independent association for graduates of Nanyang Technological University in Singapore. It serves as a dedicated platform for alumni to connect, network, and maintain a lifelong relationship with their alma mater. Members enjoy exclusive perks, career opportunities, and access to physical facilities like lounges and co-working spaces at their clubhouse.

Sources

Victim sitentualumni.org.sg

Source

Indexed 16 days 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 thegentlemen

thegentlemen is a ransomware group that emerged in September 2025, operating with apparent financial motivations based on their broad targeting of commercial sectors. The group has documented 267 victims across multiple countries, with primary focus on the United States, Thailand, France, Brazil, and India. Their targeting strategy demonstrates a preference for high-value sectors including manufacturing, technology, healthcare, and financial services organizations. Given the group's recent emergence and limited public documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they employ ransomware-as-a-service models remain unclear. The relatively high victim count of 267 in a short operational timeframe since September 2025 suggests either an aggressive campaign pace or potential inflation of victim numbers through affiliate operations, though without corroborating intelligence reports, the group's exact operational capabilities and notable campaigns cannot be definitively established. Current intelligence indicates the group remains active as of late 2025, though comprehensive threat profiling requires additional validated reporting from authoritative cybersecurity sources. The group has been linked to 785 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post August 23, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

August 10, 2026NTU Alumni Club listed by thegentlemenon the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 785 public victims on Darkfield. A sample of the most recent:

See the full thegentlemen dossier →

Sector and geography

This disclosure adds to ransomware activity in the Education sector, which has 1,087 disclosures indexed across all operators we track. Geographically, NTU Alumni Club is reported in Singapore, a country with 45 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means NTU Alumni Club 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, SingCERT (Singapore), as required for your jurisdiction.
Monitor for the data appearing on thegentlemen'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.