A hacker breached HealthCare.gov in July and uploaded malicious malware to the website, but did not access any personal information, according to a Wall Street Journal report.
Department of Health and Human Services noticed the attack on the federal health insurance enrollment website last week, and said that the hacker was only able to access one server with a test code.
An HHS official told the Journal that this is the first breach of the website the department has discovered, but said the attack raised concerns about potential for additional incidents.
“We have taken measures to further strengthen security,” HHS said in a statement, according to the Journal.