Was SUNSEA hit by ransomware?

SUNSEA was listed by the thegentlemen ransomware operation (Thailand), 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 SUNSEA breach?

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

Ransomware victim disclosure

← All victims

Sunsea Plastics P.S. Co., Ltd.

listed as SUNSEA · Claimed by Thegentlemen · listed 21 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedAug 30, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: Thailand
Listed on leak site: Aug 30, 2026

About the victim

AI dossier — public-source company profile

Sunsea Plastics P.S. Co., Ltd. is a family-owned Thai polyethylene film manufacturer founded in 1988, operating a 13,000 sq.m purpose-built factory in Bangna, Bangkok. It is Thailand's leading independent PE extruder, producing LDPE shrink film, LLDPE lamination and printing films, PP/PE coex films, milk pouches and overwrap films across 16 mono-layer and 3-layer production lines. The company is the sole ExxonMobil-authorized producer of Nexxstar collation shrink film in Thailand and holds ISO 9001 certification.

Industry: Polyethylene Film Manufacturing
Address: 13,000 sq.m factory in Bangna, Bangkok; office at Soi Lasalle 24, Sukhumvit Rd, Thailand
Founded: 1988

Attack summary

Severity: low — Data published status confirmed but no proof files, screenshots, or specific data categories described in the leak post. No operational disruption or sensitive data types (PII, medical, financial) explicitly mentioned.

The group has published data from Sunsea Plastics but the leak post contains no specific claims about encryption, exfiltration method, or data categories compromised.

low

What the group claims

sunsea.co.th Sunsea Plastics P.S. Co., Ltd. is a family-owned Thai polyethylene film manufacturer founded in 1988, operating a purpose-built 13,000 sq.m factory in Bangna, Bangkok (office at Soi Lasalle 24, Sukhumvit Rd). It is Thailand's leading independent PE extruder, producing LDPE shrink film (rolls, hoods, sleeves, bags), LLDPE lamination and printing films, mLLDPE, PP/PE coex films, milk pouches and overwrap films, running 16 mono-layer plus 3-layer lines. It is the sole ExxonMobil-authorized producer of Nexxstar collation shrink film in Thailand and is ISO 9001 certified

Sources

Victim sitesunsea.co.th

Source

Indexed 21 hours 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 807 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post August 30, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

August 30, 2026SUNSEA listed by thegentlemenon the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 807 public victims on Darkfield. A sample of the most recent:

See the full thegentlemen dossier →

Sector and geography

Geographically, SUNSEA is reported in Thailand, a country with 59 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means SUNSEA 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.
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.