Hackers have breached security of the Obamacare website.


The Obama Administration says hackers downloaded malicious software onto a test server of
healthcare.gov
as part of a broader attack, intended to cripple other websites.


Investigators found no evidence consumers' personal data was viewed or taken in the breach.


The security of
healthcare.gov
, which serves residents of 36 states, has been a major concern for some members of congress.