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This week, \u201cThe Daily\u201d is revisiting some of our favorite episodes of the year and checking in on what has happened since the stories first ran. Today: the unexpected story of how family history websites have been used by law enforcement to track down suspects and win convictions \u2014 and why retroactive regulation won\u2019t be able to reverse the trend. Guest: Heather Murphy, a reporter at The New York Times who spoke with CeCe Moore, a genetic genealogist, and Curtis Rogers, a creator of the genealogy website GEDMatch. For more information on today\u2019s episode, visit nytimes.com/thedaily.\xa0\n\nBackground reading:Today, we revisit Part 2 of our series on genetic privacy. If you\u2019d like to catch up on the full story, make sure to listen to Part 1 as well.Do you think your DNA profile is private? A warrant granted by a judge in Florida could open up all consumer DNA sites for use by law enforcement agencies across the country.At a conference this fall, \u201crockstars\u201d of the DNA industry and top law enforcement officers grappled with how to regulate the use of genetic material in policing. They also practiced solving murders together.Here\u2019s how to protect yourself if you take a genetic test at home.