House Minority Leader Nancy Pelosi (D-Calif.) said she has received "obscene and sick calls" following a cyberattack that made public the personal information, including cellphone numbers, of Democratic entities, leaders and donors.

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The hack, widely attributed to Russia, specifically targeted Democrats and Democratic groups including the Democratic National Committee (DNC) and the Democratic Congressional Campaign Committee (DCCC).

The hacker, using the name Guccifer 2.0, also dumped the personal contact info of House Democrats, congressional staff members and campaign personnel on his website.

In a letter to Democrats, Pelosi warned colleagues not to answer their phones or read incoming text messages.

"I am changing my phone number, and I advise you to do so as well," Pelosi said.

"On a personal note, I was in the air flying from Florida to California when the news broke. Upon landing, I have received scores of mostly obscene and sick calls, voicemails and text messages."

She called the hack a "sad course of events, not only for us," but for the country.

DCCC Chairman Ben Ray Luján set up a member call at 6 p.m. with cybersecurity experts investigating the breach to provide an update and security guidance.

There is also an ongoing threat assessment by Capitol Police and the sergeant-at-arms.

In an email, John Ramsey, the chief information security officer for the House, said those affected should change the passwords to their email accounts and sensitive personal accounts such as banking institutions.