An estimated one-fifth of a subset of all applicants for Central Intelligence Agency positions had significant ties to the terror groups Hamas, Hezbollah and al Qaeda, a newly released document from NSA leaker Edward Snowden’s collection revealed Monday.

The document — released by Mr. Snowden as part of his National Security Agency intelligence dump — said the terrorist groups worked hard to infiltrate America’s top security agencies. CIA officials uncovered thousands of applicants, roughly one in five of a subset, with “significant terrorist and/or hostile intelligence connections,” the document states, as Ynet News reported.