Data breach watchdogs WizCase ran across over eighty such misconfigured cloud storage (opens in new tab) data silos that exposed data totaling over a terabyte.
According to redacted versions of the files seen by TechRadar Pro, the documents include real estate tax information about businesses, along with photographs of the properties, as well as the building and city plans from various municipalities, mostly in the state of Massachusetts.
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“The breach could lead to massive fraud and theft from citizens of those municipalities. The highly-sensitive nature of the data contained within a local government’s database, from phone numbers to business licenses to tax records, are highly susceptible to exploitation by bad actors,” suggests WizCase in a blog post (opens in new tab) sharing details about the misconfigured buckets.
Mapping the source
WizCase says its researchers noticed that the name of the misconfigured buckets suggested they were used by the same software, which led them to the Massachusetts-based information management software developer, PeopleGIS.
In addition to business licenses, the silos also contained several pieces of personally identifiable information (PII) in residential records such as deeds, tax information, and resumes for applicants to government jobs.
“Some of the vulnerable documents were redacted, but they were digitally redacted using transparent tools like a marker. This means whoever found them could change the contrast level of the document in a photo editor and see the redacted information,” suggests WizCase.
In all, WizCase researchers could access 86 S3 buckets without having to contend with any password or encryption (opens in new tab). PeopleGIS has since secured the buckets, once WizCase alerted them about the misconfiguration.
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