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Cyber Threat
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Ransomware victim Public Sector

National Water Authority

Listed by Blackshrantac on · organisation based in Peru

ana.gob.pe

Disclosed
Jan 8, 2026
Leak-site listing date
Threat group
Blackshrantac
43 victims listed
Country
Peru
#34 most targeted
Sector
Public Sector

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Blackshrantac. Figures and technique mappings are quoted from the source data, not inferred.

About the Blackshrantac group

BlackShrantac is a ransomware group that emerged in late 2025, targeting organizations in manufacturing, financial services, technology, and the public sector globally, employing double-extortion combined with living-off-the-land techniques to weaponize legitimate tools and disable defenses before encrypting files. Blackshrantac has listed 43 victims since September 2025.

Incident analysis

National Water Authority was listed by Blackshrantac ransomware, a group with 43 victims recorded in this database. The listing appeared on the group's leak site on January 8, 2026.

National Water Authority is based in Peru and operates in the Public Sector sector. Peru ranks #34 worldwide for ransomware disclosures, with 89 victims in this database.

Sector context. Organisations in this sector hold valuable data and operational systems that ransomware groups seek to exploit for financial gain through encryption and data exfiltration.

Blackshrantac 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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was National Water Authority attacked by ransomware?

Yes. National Water Authority was listed as a victim of the Blackshrantac ransomware group on January 8, 2026. The organisation is based in Peru and operates in the Public Sector sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked National Water Authority?

National Water Authority was attacked by Blackshrantac ransomware. Blackshrantac is one of the most active ransomware groups, having claimed 43 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the National Water Authority ransomware attack occur?

The ransomware attack on National Water Authority was disclosed on January 8, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the National Water Authority ransomware attack?

The specific data stolen from National Water Authority has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Public Sector organisation, National Water Authority likely held sensitive business data, client information, and operational records.

How can organisations protect against Blackshrantac attacks?

To defend against Blackshrantac and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.