WIKA Beton · Breach

The Gentlemen ransomware claims attack on Indonesia's WIKA Beton

Oct 26, 2026 · 1 min read

The Gentlemen ransomware group listed WIKA Beton, Indonesia's largest precast and prestressed concrete maker, on its leak site on Oct 26, 2026 (UTC), according to DailyDarkWeb. No details on the volume or type of allegedly stolen data have been shared and the company has not confirmed the incident. Contractors and partners should watch for invoice fraud and project-themed phishing.

By HIFY Radar newsroom Updated 10/26/2026 01:53 PM Get this every day →← Back to the feed 1 source

MediumBreachNo software to update

In this article

What happened
Why it matters
What to do
For the technical team
Timeline
Sources

What happened

The Gentlemen ransomware group listed WIKA Beton, Indonesia's largest precast and prestressed concrete maker, on its leak site. The listing appeared on Oct 26, 2026 (UTC), according to DailyDarkWeb. The company has not publicly confirmed a cyber incident and no details on the alleged data have been shared.

Why it matters

WIKA Beton is part of the state-owned Wijaya Karya group, is listed on the Indonesia Stock Exchange and runs more than 20 plants supplying bridge, rail and infrastructure projects. If the claim holds, project designs, tender documents and partner data could be leaked. Contractors and partners face exposure to invoice fraud and project-themed phishing.

What to do

Treat this as an unverified claim: monitor the group's leak site and WIKA Beton's official channels for confirmation. Contractors and partners should strengthen invoice and payment verification and warn teams about project-themed phishing.

For the technical team

Affected: WIKA Beton (PT Wijaya Karya Beton Tbk, Indonésia) · WIKA Beton (PT Wijaya Karya Beton Tbk), part of the state-owned Wijaya Karya group, listed on the Indonesia Stock Exchange, with more than 20 plants.
Exploitation: Unverified claim. The Gentlemen group listed the company on its leak site on Oct 26, 2026 (UTC), as reported by DailyDarkWeb. No details on data volume or type and no confirmation from the victim.
Fix: No software to update
More details: The company supplies bridge, rail and infrastructure projects. DailyDarkWeb analyst note: infrastructure suppliers hold project designs, tender documents and partner data; if the claim holds, there is risk of invoice fraud and project-themed phishing. Sources give no entry vector, ransomware variant or published data.