Peroni Sosa Tellechea Burt & Narvaja

Peroni Sosa Tellechea Burt & Narvaja was compromised in a ransomware attack attributed to payload in April 2026. The organization, operating in the Business Services sector in UY, was added to the group's data leak site as part of an extortion campaign.

payload operates as a financially motivated ransomware-as-a-service (RaaS) operation, exfiltrating sensitive data and threatening public disclosure to pressure victims into paying ransom demands.

PSTBN Peroni Sosa Tellechea Burt & Narvaja is one of the largest and most prestigious law firms in Paraguay, founded in 1968. The firm is committed to meeting the diverse legal needs of its clients across various practice areas, including corporate law, tax law, agribusiness, and regulatory compliance.