The issue stems from a breach that occurred over the weekend in which hackers were able to deploy REvil ransomware on computers running software from the afformentioned companies. Dental offices discovered the issue on Monday when they attempted to access patient information but were locked out and presented with a ransom demand. The Digital Dental Record and PerCSoft have reportedly shared a decrypter with affected practices after agreeing to pay the attackers according to ZDNet. Neither company has publicly confirmed they paid the ransom.

Ransomware has become an increasingly major problem for companies and other organizations, especially small businesses who are often hit the hardest and are least prepared for the attacks. Earlier this year, ransomware plagued computer infrastructure in Texas, Florida and Baltimore.