This week, “The Daily” 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 — and why retroactive regulation won’t 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’s episode, visit nytimes.com/thedaily.  Background reading:Today, we revisit Part 2 of our series on genetic privacy. If you’d 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, “rockstars” of the DNA industry and top law...