“The infiltration of our workplace felt like a really deep wound,” she stated.

In response, she created Project Veritas Exposed, an internet site that uploads footage and dossiers of people presupposed to have labored undercover for Mr. O’Keefe. In 2018, the marketing campaign of Abigail Spanberger, now a Virginia congresswoman, fired a volunteer after discovering her on Undertaking Veritas Uncovered and confronting her.

Extra not too long ago, Ms. Windsor provided a document to reporters at The New York Occasions a couple of deliberate operation in 2018 involving Undertaking Veritas operatives. Additional reporting revealed that the operation was geared toward H.R. McMaster, Mr. Trump’s nationwide safety adviser on the time, who had fallen out of favor with Trump supporters. (Undertaking Veritas has sued The Occasions for libel over a separate matter.)

Ms. Windsor rejected any notion that her undercover work was a type of revenge after the infiltration of her mentors’ firm in 2016.

“By way of the undercover work I’m presently doing, it has nothing to do with O’Keefe and every little thing to do with the truth that extremist right-wingers try to overthrow our democracy,” she stated.

Requested for remark, Mr. O’Keefe accused Ms. Windsor of selectively modifying her movies, together with an encounter Ms. Windsor and a colleague had with a Undertaking Veritas operative who infiltrated Democracy Companions. (The episode predated her present sequence of undercover encounters with Republicans.) Mr. O’Keefe stated that his group’s “reporting and our report speaks for itself,” and argued that Ms. Windsor had “lackluster ethics.” Democracy Companions has sued Undertaking Veritas over its infiltration of the liberal group, and that litigation is ongoing.

In some methods, Ms. Windsor’s stings echo these of maybe the main practitioner of stunts meant to deceive Republicans, the comic Sacha Baron Cohen, who targeted figures including Mr. Pence and Rudolph W. Giuliani for his 2020 film “Borat Subsequent Moviefilm.” However Mr. Cohen largely carries out his antics for leisure and shock worth, whereas Ms. Windsor sees herself as a extra severe political participant.

Her present work is funded by a small nonprofit progressive group, American Household Voices, which pursues actions “that extra conventional D.C. teams weren’t in a position or prepared” to do, in response to its web site.