Category Archives: InSecurity

InSecurity: Panera Bread Co.

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This is the first installment of a new segment titled InSecurity, covering consumer-relevant business and government security practices with an emphasis on their failures.


Each new week, it seems, brings a new corporate or government data breach or operational security failure to out awareness. This week is no exception. The failure this time, however, is particularly egregious: ever the course of eight months, Panera Bread Co. knowingly failed to protect sensitive customer data from unauthorized access. This data included, according to security researcher Dylan Houlihan who originally discovered the vulnerability, at least one web API endpoint which revealed “the full name, home address, email address, food/dietary preferences, username, phone number, birthday and last four digits of a saved credit card to be accessed in bulk for any user that had ever signed up for an account“. Equivalent vulnerabilities were eventually discovered across multiple Panera web properties.

Houlihan first reported the issue in August of 2017, reaching out to Panera’s Information Security Director, none other than Mike Gustavison. No stranger to “managing” wildly insecure corporate systems, Gustavison worked as “ISO – Sr. Director of Security Operations” at Equifax from 2009–2013. After eight months of repeated attempts to convince Panera of the severity of their security hole, Houlihan reached out to security industry expert Brain Krebs, whose influence was able to extract mainstream media coverage and a formal PR statement from Panera. Incredibly, and despite public statements to the contrary, Panera failed to secure the vulnerable API endpoints.

For a full explanation of the vulnerability and a timeline of events, reference the primary link.