A history professor at George Washington University admitted in a blog post to claiming a Black identity, despite being White.

Jessica A. Krug said she has deceived friends and colleagues by falsely claiming several identities, including “North African Blackness, then US rooted Blackness, then Caribbean rooted Bronx Blackness,” she wrote in a blog post on Medium. Krug, whose areas of expertise include African American history, Africa and Latin America, is White and Jewish, she admitted.

“I am not a culture vulture. I am a culture leech,” Krug wrote. “I have thought about ending these lies many times over many years, but my cowardice was always more powerful than my ethics.”

Neither Krug nor the university immediately returned a request for comment.