A hacker who claims to have infiltrated the Democratic National Committee’s server posted documents on Tuesday he says came from the party’s digital files.

The hacker, who identified himself as “Guccifer 2.0” after the Romanian hacker who claimed to have breached Hillary Clinton’s personal server, published documents that detailed Clinton’s weaknesses as a candidate, including a collection of negative press clips about the Clinton Foundation and a list of defenses against attacks on her private email use.