House Minority Leader Nancy Pelosi had to change her phone number after a hack of the House Democrats' campaign arm led to a barrage of "obscene" calls and messages, she said Saturday.

"I have received scores of mostly obscene and sick calls, voicemails and text messages," Pelosi wrote in a letter to party members. "Please be careful not to allow your children or family members to answer your phone."

Pelosi also urged members and staff who were receiving similar calls to change their phone numbers.

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Her comments came just a day after hackers posted personal information, including cell phone numbers and email addresses, for Democratic House members and staff. The hacking group "Guccifer 2.0" claimed responsibility for the breach, which took documents from the Democratic Congressional Campaign Committee.

American officials have said the hack is likely the work of Russian intelligence services.

It's also not the first time Democrats have found their personal information and emails being compromised: last month, Wikileaks published hacked emails and documents from the Democratic National Committee on the eve of the party's convention in Philadelphia--a situation that led to the resignation of DNC Chairwoman Debbie Wasserman Schultz and a handful of other high-level DNC aides. Pelosi referred to that breach as an "electronic Watergate."