The fixes completed this past weekend to get the federal Obamacare website running more smoothly for consumers did nothing to address security concerns, a cybersecurity expert who testified before Congress last month told CNBC on Thursday.
"If you look at the report that was released, they had fixed 400 bugs. None of those were addressed on security," said David Kennedy, a so-called "white hat" hacker who tests online security by breaching websites.
"There haven't been any [security] fixes yet, he said in a "Squawk Box" interview. "You're trying to rush to keep the website—the front-end that we see everyday—up-and-running. Unfortunately when you do that and you don't do any testing around that, you introduce new exposures."