Joomla released version 3.4.5 of the popular content management system on Thursday. Security firm Sucuri said it saw attacks against two of its customers who operate very popular websites. The vulnerability allows attackers to gain administrative privileges by hijacking an active administrator session. On Monday, Sucuri recorded 12,000 exploitation attempts against the sites of Sucuri customers. The fast attack times make the use of Web application firewalls, intrusion detection systems, access control policies and proper logging increasingly important.”]