Star Health Insurance experienced a massive data breach involving around 7 TB of highly sensitive information. The point of contention is the allegation that the data was purchased from the company’s Chief Information Security Officer, Amarjeet Khanuja. Statements from multiple security researchers point to inconsistencies in the claims including false email screenshots and a potential impersonation attack by insider traders. CISOs are recommending a range of stronger security measures to prevent future breaches.

UK firms are 'sleepwalking' into smart building cyber threats
Summarize this content to a maximum of 60 words: The convergence of operational technology and IT systems is posing serious risks for property firms.