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Such confidence in the resilience of the U.S.'s election infrastructure against destructive cyberattacks stems from the significant improvements that have been implemented by state and local election officials on ensuring voting and ballot counting security, noted Easterly in an interview.

Information purportedly stolen by Meow ransomware included client and employee data, scanned payment files, personal details, addresses, banking details, certificates, and criminal records.

Despite immediate action to thwart unauthorized access and enforce security measures, ADT had some encrypted employee data stolen as a result of the incident, said the firm in a filing with the Securities and Exchange Commission.