SAN FRANCISCO — When it comes to dealing with a Florida college student who uses public data and social media to track the private jets of billionaires, politicians and other celebrities, Taylor Swift apparently can’t just shake it off.

In late December, Swift’s camp hit Jack Sweeney, a junior studying information technology at the University of Central Florida, with a cease-and-desist letter that blames his automated tracking of her private jet for tipping off stalkers as to her location. In the letter, attorneys from the law firm Venable accuse Sweeney of effectively providing “individuals intent on harming her, or with nefarious or violent intentions, a roadmap to carry out their plans.”

Sweeney provided the link to that letter in an email to The Associated Press. In that message, he emphasized that while he has never intended to cause harm, he also believes strongly in the importance of transparency and public information.

“One should reasonably expect that their jet will be tracked, whether or not I’m the one doing it, as it is public information after all,” he wrote.

A spokesperson for Swift echoed the legal complaint, saying that “the timing of stalkers” suggests a connection to Sweeney’s flight-tracking sites. The spokesperson did not respond to questions seeking elaboration of that charge, such as whether stalkers have been seen waiting for Swift at the airport when her plane arrived or, alternatively, if there is evidence that stalkers have somehow inferred Swift’s subsequent location from the arrival time of her flight.

The legal letter likewise accuses Sweeney of “disregarding the personal safety of others”; “willful and repeated harassment of our client”; and “intentional, offensive, and outrageous conduct and consistent violations of our client’s privacy.”

Sweeney says his automated tracking setup repackages public flight data that private jets broadcast using a method called ADS-B; such broadcasts are required by the Federal Aviation Administration, a government agency. Hobbyists have long collected this data for use in tracking aircraft flights without incident. Nevertheless, the Venable attorneys have demanded Sweeney “immediately stop providing information about our client’s location to the public.”

At one point Sweeney had more than 30 such accounts on Twitter, now known as X after Elon Musk purchased the site for $44 billion in 2022. Musk subsequently had his own dustup with Sweeney, tweeting at one point that his commitment to free speech required him not to ban Sweeney’s @elonjet account even though he considered it “a direct personal safety risk.”

But it wasn’t long before Musk abruptly about-faced and effectively banned the student from X, accusing Sweeney of endangering his personal safety.

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This story has been updated to correct how Jack Sweeney obtains his flight tracking data. He gets it from federally mandated flight information broadcasts made by private jets, not directly from the Federal Aviation Administration.