Securing your customer data is really only as effective as the weakest link in your supply chain and partnerships. This time, the breach source was from Typeform, a SaaS-based software that builds forms and surveys. Typeform's vulnerability not only affected Harvey Norman, but also Fortnum & Mason, London's famous upscale market. 

While companies are not directly responsible for securing their business partners' infrastructure, they are responsible for protecting their customer data.  This means going public to their customers about what information might be exposed. While disclosure will affect the company brand, failure to do so can incur fines and result in worse reputation outcomes in the long run.  

Luckily, this breach did not contain sensitive information, like passwords or credit card information. However, customers were warned to monitor for phishing or email scams.