Romanian Hacker 'Guccifer' Pleads Guilty in Federal Court

He previously claimed to have hacked into Clinton's private email server.

— -- The notorious Romanian hacker known as Guccifer has pleaded guilty in federal court to two hacking-related charges, according to prosecutors.

In a federal courtroom in Alexandria, Virginia, today, prosecutors said Guccifer hacked into the computers and social media accounts of about 100 Americans.

He ultimately pleaded guilty today to one count of unauthorized access to a protected computer and one count of aggravated identity theft. He could face up to seven years in prison, and he will be sentenced in September.

Earlier this month, Lazar made headlines when he said he had hacked into Hillary Clinton’s private email server, but officials remain skeptical of his claims.

Lazar hacked accounts of a "family member of two former U.S. presidents, a former U.S. Cabinet member, a former member of the U.S. Joint Chiefs of Staff and a former presidential adviser," the press release states.

"After gaining unauthorized access to their email and social media accounts, Lazar publicly released his victims’ private email correspondence, medical and financial information, and personal photographs," according to the press release.

Lazar initially pleaded not guilty to the charges against him on April 14, but a change-of-plea hearing was scheduled last week, according to court records.

His court-appointed attorney, Shannon Quill, declined to comment on his case, citing office policy.

-Mike Levine contributed to this story.