Roughly four million records containing the personal details of Time Warner Cable (TWC) customers were discovered stored on an Amazon server without a password late last month.

The files, more than 600GB in size, were discovered on August 24 by the Kromtech Security Center while its researchers were investigating an unrelated data breach at World Wrestling Entertainment. Two Amazon S3 buckets were eventually found and linked to BroadSoft, a global communications company that partners with service providers, including AT&T and TWC.
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he leaked data included usernames, emails addresses, MAC addresses, device serial numbers, and financial transaction information
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Other databases revealed billing addresses, phone numbers, and other contact info for at least hundreds of thousands of TWC subscribers. The servers also contained a slew of internal company records, including SQL database dumps, internal emails, and code containing the credentials to an unknown number of external systems..
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CCTV footage, presumably of BroadSoft’s workers in Bengaluru, India—where the breach is believed to have originated—was also discovered on the Amazon bucket.

Source: Millions of Time Warner Cable Customer Records Exposed in Third-Party Data Leak

Ouch!