An FBI interpreter named Daniela Greene was lured into the ISI net by a man she thought she loved until she realised her mistake. She fled to Syria to get married to a German Denis Cuspert, who was known as Deso Dog in his homeland, before changing his name to Abu Talha al-Almani in Syria. 

Daniela had met him on Skype, which is a modus operandi of ISIS to attract potential targets, and had unknowingly decided that he was the one for her. Although married to an American, she did not hesitate before making up a story in front of her husband and saying that she was going to Munich to visit her parents. Calling this a "stunning embarassment", FBI officials said that the woman had also tipped off the ISIS agent about him being in the FBI's radar. However, soon after she got married, she understood that it was a big mistake.

Meanwhile, John Kirby, a former state department official said, "most westerners trying to go to an IS region in Syria risk getting their heads cut off. So for her to be able to get in as an American, as a woman, as an FBI employee and to be able to take up residence with a known IS leader, that all had to be coordinated." Fearing public glare on her return, the agency had sealed most of the documents pertaining to her. Meanwhile, people close to Greene said that there was no change in her behaviour that could have triggered the idea of her going to an ISIS boyfriend. She has now been sentenced to two years imprisonment.