tirtaraharja.co.id Listed by funksec Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On 1 February 2025, the Indonesian water-supply company operating as tirtaraharja.co.id was listed by the ransomware group funksec. Public reporting states that internal files were exfiltrated in a ransomware attack; the number of people affected remains unknown and further technical details have not been disclosed.

The listing itself is a claim made by the group on its leak site. No independent confirmation of the full scope or contents of any stolen data has been published, so the practical impact for individuals and the organisation is still being assessed.

What happened

According to the available record, tirtaraharja.co.id appeared on a funksec leak-site listing dated 1 February 2025. The sole concrete description given is that internal files were allegedly exfiltrated during a ransomware attack. No public information has been released about the date the intrusion began, the initial access method, the volume of data taken, or whether any ransom demand was paid or refused. The number of people whose information may have been involved is listed as unknown. All other operational details remain undisclosed.

Who is funksec?

Funksec is a ransomware operation that has been active in the public threat landscape. Like many contemporary groups, it typically employs a double-extortion model: encrypting systems while also copying data and threatening to publish it if payment is not made. Victims are routinely named on dedicated leak sites, often with sample files or directories to demonstrate possession. Public reporting has associated funksec with opportunistic targeting across multiple sectors and geographies rather than a narrow industry focus. Claims made on such sites, including the listing of tirtaraharja.co.id, should be treated as assertions by the group until independently verified.

About tirtaraharja.co.id

tirtaraharja.co.id is the online presence of PT Tirta Raharja Perkasa, an Indonesian company that supplies portable water and manages distribution systems for clean drinking water, particularly in remote and less-developed areas. Its stated mission centres on delivering safe, potable water to improve living standards. Organisations of this type routinely hold operational records, customer or community contact details, billing information, employee data, engineering plans, and supplier contracts. Because the company operates critical infrastructure that communities depend on daily, any compromise of its systems carries potential consequences beyond ordinary commercial data loss.

What was likely exposed

The only data type named in the public record is “internal files” said to have been exfiltrated. No inventory of specific file categories, databases, or personal-information fields has been released, and the number of affected individuals is unknown. Water-supply operators typically maintain customer registries, service-area maps, maintenance logs, financial records, and staff files. Whether any of those categories were among the material taken in this incident has not been confirmed. Exact contents therefore remain unconfirmed.

Why it matters

If internal files containing personal or operational data were copied, individuals whose details appear in those files could face risks of phishing, identity misuse, or unwanted contact. For the company itself, exposure of engineering or distribution information could affect service continuity planning and public trust in a provider of essential drinking water. Because the scale and precise nature of the material remain undisclosed, the concrete level of harm cannot yet be quantified; the principal concern is the combination of critical-service operations and the possibility of personal data leaving organisational control.

If your data was in this claimed breach

Anyone who has had dealings with PT Tirta Raharja Perkasa or its water-distribution services should treat the possibility of exposure seriously until more detail emerges. Practical first steps include monitoring bank and utility accounts for unexpected activity, changing passwords on any accounts that reused credentials linked to the company, and enabling multi-factor authentication wherever available. Be alert for phishing messages that reference water services or claim to come from the organisation. Readers can also run a free exposure scan of their email address to check whether that address has already appeared in other known breach data sets. Official updates from the company or Indonesian authorities, if issued, should be followed for any further guidance.

AICompiled with AI assistance from public sources and published under our editorial standards.