The Heartbleed bug is serious. Disclosed less than two days ago, the Heartbleed bug has sent sites and services across the Internet into patch mode.

For an in-depth explanation of what exactly Heartbleed is, and what it does, read this post by our own Stephen Shankland. In essence, the bug potentially exposed your username and password on sites like Facebook, Google, Pinterest, and more.

Using Alexa.com, we've been going through the list of the top 100 sites in the US, plus a few extras, and asking "Have you patched the Heartbleed bug yet?" Once we have an answer, we will fill in the chart below with the response.

While we wait to hear back, we will be testing the sites against the Qualys SSL Server Test. There may be some instances where the patch isn't detected or a server can not be inspected (the site may be fine, but Qualys can not confirm that), in which case we will mark the site as "be on alert." When a site is marked as such, you should proceed with caution and contact the site or company directly if you have any questions pertaining to your account security.

You may notice some companies will be marked as "was not vulnerable." In that case, the site in question does not use the type of OpenSSL encryption this bug was based on and your data was never at risk.

If you're checking back after seeing earlier versions of this story, you may also notice that some statuses have changed. For instance, the status for Microsoft, MSN, and Live has been updated to "was not vulnerable" once Microsoft confirmed that to be the case.

Site Qualys Confirmation from site Google Pass Vulnerability patched. Password change recommended Facebook Pass Vulnerability patched. Password change recommended YouTube Pass Vulnerability patched. Password change recommended Yahoo! Pass Vulnerability patched. Password change recommended Amazon Pass Was not vulnerable Wikipedia Pass Vulnerability patched. Password change recommended LinkedIn Pass Was not vulnerable eBay Pass Was not vulnerable Twitter Pass Was not vulnerable Craigslist Pass Awaiting response Bing Pass Vulnerability patched. Password change recommended Pinterest Pass Vulnerability patched. Password change recommended Blogspot Pass Vulnerability patched. Password change recommended CNN Pass Was not vulnerable Live Pass Was not vulnerable PayPal Pass Was not vulnerable Instagram Pass Vulnerability patched. Password change recommended Tumblr Pass Vulnerability patched. Password change recommended Espn.go.com Pass Vulnerability patched. Password change recommended Wordpress Pass Awaiting response Imgur Pass Awaiting response Huffington Post Not available Awaiting response Reddit Pass Vulnerability patched. Password change recommended MSN Pass Was not vulnerable Netflix Pass Vulnerability patched. Password change recommended Weather.com Not available Vulnerability patched. Password change recommended IMDb Not available Was not vulnerable Yelp Pass Vulnerability patched. Password change recommended Apple Pass Was not vulnerable AOL Pass Awaiting response Microsoft Pass Was not vulnerable NYTimes Pass Awaiting response Bank of America Pass Was not vulnerable Ask Not available Was not vulnerable Fox News Pass Was not vulnerable Chase Pass Was not vulnerable GoDaddy Pass Vulnerability patched. Password change recommended About Not available Was not vulnerable BuzzFeed Pass Awaiting response Zillow Pass Was not vulnerable Wells Fargo Pass Was not vulnerable Etsy Pass Vulnerability patched. Password change recommended XVideos Not available Vulnerability patched. Password change recommended Walmart Pass Was not vulnerable CNET Pass Was not vulnerable Pandora Pass Was not vulnerable xHamster Pass Awaiting response PornHub Pass Was not vulnerable Comcast Pass Awaiting response Stack Overflow Pass Vulnerability patched. Password change recommended Salesforce Pass Was not vulnerable Daily Mail Be on alert Awaiting response Vimeo Pass Vulnerability patched. Password change recommended Conduit Pass Awaiting response Flickr Pass Vulnerability patched. Password change recommended Zedo Not available Was not vulnerable Forbes Not available Was not vulnerable LiveJasmin Not available Vulnerability patched. Password change recommended USPS Pass Vulnerability patched. Password change recommended Indeed Pass Awaiting response Hulu Pass Was not vulnerable Answers Pass Was not vulnerable HootSuite Pass Was not vulnerable Amazon Web Services Pass Awaiting response Adobe Pass Awaiting response Blogger Pass Vulnerability patched. Password change recommended Dropbox Pass Vulnerability patched. Password change recommended Reference.com Pass Was not vulnerable AWeber Pass Was not vulnerable UPS Pass Was not vulnerable Intuit Pass Awaiting response NBC News Pass Awaiting response USA Today Pass Was not vulnerable Outbrain Pass Vulnerability patched. Password change recommended The Pirate Bay Pass Awaiting response The Wall Street Journal Pass Awaiting response Bleacher Report Pass Awaiting response Constant Contact Pass Was not vulnerable Wikia Pass Vulnerability patched. Password change recommended CBSSports Pass Was not vulnerable Publishers Clearing House Pass Awaiting response Washington Post Not available Vulnerability patched. Password change recommended Target Pass Was not vulnerable Drudge Report Be on alert Awaiting response TripAdvisor Pass Was not vulnerable FedEx Pass Was not vulnerable Capital One Pass Was not vulnerable wikiHow Not available Was not vulnerable Googleusercontent.com Pass Vulnerability patched. Password change recommended Groupon Pass Was not vulnerable Best Buy Pass Awaiting response AT&T Pass Awaiting response Home Depot Pass Awaiting response Trulia Not available Was not vulnerable TMZ Pass Awaiting response Feedbin Pass Vulnerability patched. Password change recommended Pinboard Pass Vulnerability patched. Password change recommended GetPocket Pass Vulnerability patched. Password change recommended IFTTT Pass Vulnerability patched. Password change recommended ManageWP Pass Was not vulnerable PayScale Pass Was not vulnerable OKCupid Pass Vulnerability patched. Password change recommended Dillard's Pass Was not vulnerable NetZero Not available Was not vulnerable Classmates Not available Was not vulnerable MyPoints Pass Was not vulnerable Orbitz Pass Was not vulnerable

This list is going to be live and constantly updated; please return to view the latest information as we get it.

CNET's Seth Rosenblatt contributed to this report