Nandos has moved swiftly to assure all their customers, and specifically their Firestarters, that their data is safe. This came after Business Report published an article earlier this morning about a possible security breach.
Read 'Attention Nandos: You may have a security problem' for the full story.
Nandos has subsequently provided more clarity on the incident.
According to the company, a link to a private Nando’s Firestarters survey was shared on Twitter in 2014. The details of the shared page resurfaced as a data breach, and the company "would like to clarify that this was not a data breach, and was instead a circulation of a cached (temporarily stored) page".
The company has yet to establish how and by whom the cached page was shared.