A massive data breach at DentaQuest has potentially compromised the personal and dental health information of over 23 million individuals, after hackers infiltrated the company's computer network in May 2026. The stolen data may include sensitive information such as names, addresses, and dental health records. This breach is particularly concerning due to the sensitive nature of the compromised data, which could be used for identity theft or other malicious purposes. The incident highlights the need for robust cybersecurity measures to protect sensitive healthcare information. DentaQuest's breach is a significant example of the risks associated with storing large amounts of personal data1. So what this means for cybersecurity practitioners is that they must prioritize the protection of sensitive healthcare information to prevent similar breaches and mitigate the risk of identity theft and other cyber threats.