• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
LeadershipBernie Sanders

Sanders Campaign Fires Staffer Who Accessed Clinton Voter Data

By
Sam Frizell
Sam Frizell
and
TIME
TIME
Down Arrow Button Icon
By
Sam Frizell
Sam Frizell
and
TIME
TIME
Down Arrow Button Icon
December 18, 2015, 8:21 AM ET
CBS News Democratic Presidential Debate
DES MOINES - NOVEMBER 14: CBS News Political Director and FACE THE NATION anchor John Dickerson moderates the CBS News Democratic Presidential Debate at Drake University Des Moines, Iowa on Saturday, November 14, 2015 on the CBS Television Network. Sen. Bernie Sanders and Former U.S. Secretary of State Hillary Clinton, shown. (Photo by Chris Usher/CBS via Getty Images)Photograph by CBS Photo Archive via Getty Images

A staffer on the Bernie Sanders campaign was able to improperly access Hillary Clinton voter data due to a security glitch on the Democratic National Committee’s system, setting off alarm bells at the Democratic Party’s headquarters.

In response, the DNC has cut off the Sanders campaign from accessing key national party voter data, a potentially major setback for the campaign a little more than a month before the Iowa caucuses. And the DNC is itself ordering an audit of its system, a party official said.

The Sanders campaign said that it had fired the staffer who improperly accessed the data.

“After discussion with the DNC it became clear that one of our staffers accessed some modeling data from another campaign,” spokesman Michael Briggs said in a statement. “That behavior is unacceptable and that staffer was immediately fired.”

The DNC official said that the glitch in its voter data did not expose any information to the general public and was only vulnerable to secure users for three hours. The glitch, the official said, was due to a brief software patch by the vendor, NGP VAN.

NGP VAN did not immediately respond to a request for comment.

“The DNC places a high priority on maintaining the security of our system and protecting the data on it. We are working with our campaigns and the vendor to have full clarity on the extent of the breach,” said DNC communications director Luis Miranda.

The Washington Post first reported that the Sanders campaign accessed Clinton data.

The Democratic Party is responsible for maintaining a crucial file of voters that can be mined by presidential campaigns, as well as state and local parties in elections, allowing candidates to target voters and vastly increase turnout. It is one of the party’s key roles, and has historically given the Democrats an important advantage over Republicans.

The campaign’s access to Clinton’s data raises questions about the security of the DNC’s software and the strength of the firewall between the Democratic campaigns’ data. The NGP VAN software is used by a wide variety of groups, including labor unions, nonprofits and others.

The Sanders campaign said that it had raised a red flag with the DNC “months ago,” telling the party that campaign data was made accessible to other presidential campaigns.

“Sadly, the vendor who runs the DNC’s voter file program continues to make serious errors. On more than one occasion, the vendor has dropped the firewall between the data of different Democratic campaigns,” said Briggs. “We are working with the DNC and the vendor and hope that this kind of lapse will not occur again.”

The DNC official said the data was only available to secure users, and only for a brief interval. The Sanders’ campaign access to the data is suspended until the DNC receives a full explanation and is assured all improperly accessed data was disposed of.

Miranda said NGP VAN was conducting an audit, and that the DNC is considering an additional outside audit.

“The DNC immediately directed NGP VAN to conduct a thorough analysis to identify any users who accessed the data, what actions they took in the system, and to report on the findings to the Party and any affected campaign,” Miranda said.

This piece was originally published in TIME.

About the Authors
By Sam Frizell
See full bioRight Arrow Button Icon
By TIME
See full bioRight Arrow Button Icon

Latest in Leadership

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Leadership

Asian man talking on the phone with his laptop in his lap
SuccessWealth
Gen Z millionaires are rushing into crypto—and they blame the risky bet on FOMO. Fear of missing out
By Preston ForeApril 2, 2026
37 minutes ago
Major 4-day workweek study suggests that when we work 5 days we spend one doing basically nothing
SuccessProductivity
Major 4-day workweek study suggests that when we work 5 days we spend one doing basically nothing
By Orianna Rosa RoyleApril 2, 2026
60 minutes ago
Ed Bastian took Delta from bankrupt to billions by putting employees first. He refuses to let AI disrupt that
C-SuiteFortune 500: Titans and Disruptors of Industry
Ed Bastian took Delta from bankrupt to billions by putting employees first. He refuses to let AI disrupt that
By Fortune EditorsApril 2, 2026
3 hours ago
Ed Bastian
SuccessCareers
12 Fortune 500 CEOs worked for Pepsi. Delta’s Ed Bastian explains why it’s a leadership factory
By Preston ForeApril 2, 2026
3 hours ago
farley
Future of WorkInfrastructure
Ford CEO Jim Farley says America is sleepwalking past its ‘essential economy’ crisis. Goldman Sachs just showed how big it really is
By Nick LichtenbergApril 2, 2026
4 hours ago
Have a strong brand in a world of noise—it’s like having the only red T-shirt in a stadium full of white ones
MagazineVolvo
Have a strong brand in a world of noise—it’s like having the only red T-shirt in a stadium full of white ones
By Kamal AhmedApril 2, 2026
7 hours ago

Most Popular

Gen Z fled San Francisco for Texas and Florida. Now they’re turning ‘welcomer cities’ into the next big tech towns
Real Estate
Gen Z fled San Francisco for Texas and Florida. Now they’re turning ‘welcomer cities’ into the next big tech towns
By Fortune EditorsApril 2, 2026
9 hours ago
Current price of gold as of April 1, 2026
Personal Finance
Current price of gold as of April 1, 2026
By Fortune EditorsApril 1, 2026
1 day ago
Two-thirds of parents say their adult Gen Z kids still rely on them financially  for support—even though it's putting them under strain
Success
Two-thirds of parents say their adult Gen Z kids still rely on them financially  for support—even though it's putting them under strain
By Fortune EditorsMarch 31, 2026
2 days ago
Current price of oil as of April 1, 2026
Personal Finance
Current price of oil as of April 1, 2026
By Fortune EditorsApril 1, 2026
1 day ago
Jerome Powell says the $39 trillion national debt is ‘not unsustainable,’ but warns the trajectory ‘will not end well’
Economy
Jerome Powell says the $39 trillion national debt is ‘not unsustainable,’ but warns the trajectory ‘will not end well’
By Fortune EditorsMarch 30, 2026
3 days ago
2 years after Musk challenged Zuckerberg to a cage match, they were texting about DOGE and a joint OpenAI bid, court records reveal
Law
2 years after Musk challenged Zuckerberg to a cage match, they were texting about DOGE and a joint OpenAI bid, court records reveal
By Fortune EditorsMarch 31, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.