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Rhysida ransomware decryptor publicly released

ID: 3ea37011-67f1-5c96-ae27-84cdd34579bf

STIX ID: report--3ea37011-67f1-5c96-ae27-84cdd34579bf

Feed Name: DataBreaches.Net

Threat Score
15/100

Date Published: 2024-02-13

Date Updated: 2026-04-19

Author: Dissent

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South Korean researchers from Kookmin University and KISA have publicly released a Rhysida ransomware decryptor, documented in a preprint, that exploits a flaw in Rhysida’s encryption to predict keys and the order of file encryption, enabling file recovery (see the arXiv preprint and SC Media coverage).

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