Tumblr h as fixed Vulnerability-related.PatchVulnerability a vulnerability that it says could have exposed private user data , according to an announcement by the microblogging and social networking site . The information that could h ave been viewed Attack.Databreach by unauthorized parties includes email addresses , hashed and salted passwords , locations , previously used email addresses , and last login IPs . The flaw r esided in Vulnerability-related.DiscoverVulnerability the “ Recommended Blogs ” feature in the desktop version of Tumblr . The widget shows logged-in users a list of blogs that may be of interest to them . “ If a blog appeared in the module , it was possible , using debugging software in a certain way , to view certain account information associated with the blog , ” said Tumblr . D iscovered and reported Vulnerability-related.DiscoverVulnerability through the platform ’ s bug bounty program several weeks ago , the security vulnerability w as resolved Vulnerability-related.PatchVulnerability within 12 hours . The New York-based company also said that it couldn ’ t determine which specific accounts were at risk , although its analysis is said to have shown that “ the bug was rarely present ” . The site , which has over 440 million blogs , gave assurances to its users that it has found no evidence to suggest that any data was actually lifted . At the same time , the platform said that users needn ’ t take any action . In these cases , “ taking action ” usually means “ Change your passwords ! ” Nevertheless , the company ’ s decision to d isclose Vulnerability-related.DiscoverVulnerability the flaw is because of what Tumblr says is its commitment to transparency and because it believes that “ it ’ s simply the right thing to do ” . It has also taken steps to “ improve monitoring and analysis procedures to help it i dentify Vulnerability-related.DiscoverVulnerability and f ix Vulnerability-related.PatchVulnerability any similar bugs in the future ” . Tumblr has joined the ranks of other high-profile technology companies , such as Twitter , Facebook and Google , that h ave all revealed Vulnerability-related.DiscoverVulnerability vulnerabilities in recent weeks that could have b een exploited, Vulnerability-related.DiscoverVulnerability or were actually e xploited, Vulnerability-related.DiscoverVulnerability for h arvesting Attack.Databreach the private information of some users . Back in 2016 , Tumblr had its hands full with a security incident that c ompromised Attack.Databreach the details of 65 million Tumblr users as a result of a breach Attack.Databreach dating back to 2013 .