For the last two years, the online land records page in the town of Fairfield has offered a “fraud alert” service. Anyone can sign up to see legal filings on their property. It’s part of the careful new world – but no one could anticipate the situation that’s unfolding on Sky Top Terrace, near Sacred Heart University. Dr. Daniel Kenigsberg grew up in a house his parents bought on the semicircular street in 1953, when he was a 1-year-old. After medical school in New York and residency in Maryland, he and his wife raised their two children on Long Island,...