On Monday, 17.09.2012, the German Federal Office for Security in Information Technology (BSI) issued a press release in which it warns about a security vulnerability in Microsoft Internet Explorer. Affected are the versions 7 and 8 running on Windows XP and versions 8 and 9 on Windows 7. As the BSI also states there is no security fix available from the manufacturer yet. However the attack code required for exploiting this vulnerability is already available on the internet. For this reason, the BSI assumes a rapid, wide-scale exploitation. Even an accidental visit to a malicious website may lead to an arbitrary code being executed with the privileges of the user on the system.
In their security bulletin dated 17.09.2012 Heise Online (www.heise.de) explains in more detail how attackers may exploit the security leak. According to Heise it may come to a complete loss of control over the affected computer.
If you do not want to use Internet Explorer until a fix is available for this vulnerability, we advise to alternatively use Firefox (version 2 or higher) or Safari (version 3 or higher) for file transfers via Cryptshare. There are no restrictions in functionality of Cryptshare when using one of these alternative browsers.