In an email sent to users on 26th December , the site explained Vulnerability-related.DiscoverVulnerability that hackers were able to conduct this breach by exploiting Vulnerability-related.DiscoverVulnerability a known vulnerability in outdated vBulletin forum software . Although PakWheels didn ’ t reveal the number of affected users , we at HackRead have inside details on this breach Attack.Databreach according to which the number of targeted users impacted by this breach Attack.Databreach goes over 674,775 users including names , emails , encrypted passwords , mobile number and Facebook sessions . PakWheels was started back in 2003 to fill the missing space between automotive enthusiasts and absence of a platform that discusses automotive industry related topics in the country . In May 2016 , Pakistan ’ s real estate giant Zameen was hacked Attack.Databreach by a Bangladeshi hacker who leaked Attack.Databreach its entire database after being ignored by Zameen ’ s administration . As far as vBulletin forum software , the year 2016 , has been a bad year for anyone using vBulletin and not updating it to its latest version . Until now , the forums hacked Attack.Databreach due to vulnerability in outdated vBulletin forum software include Clash of Kings forum with 1.6 million data stolen , Epic games forum with 800,000 accounts stolen , Grand Theft Auto ( GTA ) forum , Russia ’ s Mail.ru with 27 million accounts stolen , LifeBoat forum with 7 million accounts stolen and Exile Mod gaming forum with 12,000 accounts stolen .