Proven Data and Monstercloud in the US were found to have been doing that. https://features.propublica.org/ransomware/ransomware-attack-data-recovery-firms-pay

Proven Data and Monstercloud in the US were found to have been doing that. https://features.propublica.org/ransomware/ransomware-attack-data-recovery-firms-paying-hackers/ https://features.propublica.org/ransomware/ransomware-attack...