Eye Care Leaders "is now facing multiple lawsuits regarding its handling of the breach," according to a report.
The breach took place in December, with affected practices being notified on March 1.
The breach involved several ophthalmology practices.
It's still unclear whether patient information was accessed.
The AOA has published tip for dealing with the possibility of an attack.
The U.S. Department of Health and Human Services Office for Civil Rights was made aware of the breach.
2.1M consumers were affected nationwide.
There's "no evidence to suggest actual or attempted misuse of information," but the practice is taking precautions.
In one case, wire transfer and invoice manipulation attacks were attempted.
The breach took place in February.
Nearly 27,000 patients may have been affected.
The incident made it 'impossible for us to access anything in our scheduling system.'
The FBI and two other agencies issued an alert on Oct. 28.
The attack took place starting on or around Jan. 10.
The practice chose not to deal with the hackers.
They fell victim to malware.
Hackers struck in January.
61K victims may be eligible for compensation.
16,000 California residents have been notified of the incident.
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