BY JASON SILVERSTEINNEW YORK DAILY NEWS Updated: Monday, February 8, 2016, 4:35 PM

Hacker publishes contact info for 20,000 FBI employees, one day after massive Department of Homeland Security data dump

An unknown hacker published contact information for about 20,000 FBI employees Monday— just a day after leaking data from the Department of Homeland Security and threatening a Justice Department breach.

The data dump appeared on a week-old Twitter account, @DotGovs, claiming to be an anti-Israel hacker. The user tweeted an encrypted list of names, phone numbers and email addresses for DHS employees.

The Daily News dialed more than 20 numbers published on the list. Several calls went to the wrong person or disconnected lines. But most connected to the respective person named in the data dump, either directly or through voicemail.Those reached on the phone declined comment.

The FBI referred questions to the Justice Department, which said it is"looking into the unauthorized access" of its system but does not believe any "sensitive personally identifiable information" was stolen.

The hack comes one day after an identical data dump released contact information for more than 9,000 DHS workers. The hacker reached out to Motherboard Sunday, saying he stole details about tens of thousands of federal employees by hacking into a Justice Department email. He then called someone in the web department, posing as a new employee who needed help navigating web portals, and found his way to snatching 200GB of files, he said.

The Daily News called dozens of names on the DHS list, most of which went to the respective employee named in the leak.

The hacker gave no motive for the purported hack and has not been identified. It's unclear if it is the same person behind the @DotGovs account.

Justice Department and DHS reps declined comment to the Daily News about the leaked phone numbers that matched with workers there.

The DotGovs account, which is under the username “Penis”, first tweeted Jan. 30, writing: “Change your thoughts, and you change the world.”

It then unleashed a flurry of tweets over the past two days, promising major data dumps to come.

Some tweets showed alleged screenshots of FBI and Justice Department data, and alluded to more than one hacker being behind the breach.

The account says the “Leader” is Vinnie Omari, a London hacker who was arrested in 2014 as part of the “Lizard Squad,” a team that claimed responsibility for temporarily shutting down Sony and Microsoft's gaming networks, according to the Daily Dot.

Reached by the News, Omari declined to confirm or deny if he is responsible for the government leaks.

“I don't have to clear myself of nothing,” said Omari, 23.

The breaches are just the latest of several recent security lapses for the federal government. Last year, a group of hackers called Crackas With Attitude — who claimed to be pro-Palestine teenagers — claimed responsibility for breaking into the email account of CIA Director John Brennan and stealing info from more than 2,000 employees.

One of the Crackas hackers said last month he hacked into National Intelligence Director James Clapper’s home phone and rerouted all of his calls to the Free Palestine movement.

Hacker dumps contact info for 30,000 FBI and DHS workers - NY Daily News