Public S3 Leak Exposed 1.86M Chicago Voter Records
🔓 UpGuard’s Cyber Risk Team discovered a publicly accessible AWS S3 repository tied to Election Systems & Software (ES&S) that contained multiple backups and a 12 GB MSSQL database. The data set included about 1.864 million Chicago voter records with names, addresses, dates of birth, phone numbers, driver’s license numbers and partial Social Security numbers. The bucket, labeled “chicagodb,” was found on August 11, 2017; ES&S was notified and the exposure was secured by August 12, 2017. This incident highlights vendor misconfiguration risk and the need for rigorous vendor risk management and configuration checks.
