The FBI vastly inflated the number of encrypted mobile phones its investigators were unable to access, according to a Washington Post report Tuesday. In December, FBI Director Christopher Wray estimated the agency had about 7,800 phones that it was unable to access in the past year. But the true amount was more like 1,000 to 2,000, the Post reported. The FBI told the Post "initial assessment is that programming errors resulted in significant over-counting of mobile devices reported," blaming the problem on devices being counted multiple times. The FBI has argued against tech companies' encryption of mobile phones, claiming they hinder investigations, most notably in 2016 when it pressed Apple Inc. over a locked phone used by a suspect in the San Bernardino mass shooting.