Voter registration data for more than 19 million California residents stored in an unsecured MongoDB database has been deleted and held for ransom by attackers. The incident was discovered by researchers at Kromtech, it is the last of a long string of ransom attacks targeting the database. The attacker wiped the data in the archive and left a ransom request for 0.2 Bitcoin ($3,582 US) The attack sequence is similar to other hacks, the attacker found this one containing the voter data, wiped the. data and left it open for public access. California had 18.2 million registered voters in 2016.”]
Source: https://securityaffairs.co/wordpress/66792/cyber-crime/voter-mongodb-ransom-attack.html