Incident analysis
tirtaraharja.co.id was listed by Funksec ransomware, a group with 172 victims recorded in this database. The listing appeared on the group's leak site on February 1, 2025.
tirtaraharja.co.id is based in Indonesia and operates in the Energy sector. Indonesia ranks #27 worldwide for ransomware disclosures, with 132 victims in this database.
Sector context. Energy sector attacks can have critical infrastructure implications. Ransomware on operational technology (OT) networks can disrupt power generation and distribution, elevating the urgency of recovery.
Funksec typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.