Check your biggest security risk... your browser...for free too!

An outdated browser or plug-in can serve as a security hole for hackers and malware authors to exploit, so you’ll want to keep your web software up-to-date. Qualys BrowserCheck is a free service that scans your Web browser to determine if you’re running outdated or insecure versions of some popular plug-ins or add-ons, including Adobe Reader, Adobe Flash, Java, and Windows Media Player.

You can run a quick scan from your browser in Windows, Mac, or Linux. You don't even have to download any software—Qualys runs completely within your browser. Supported browsers include Internet Explorer (IE), Mozilla Firefox, Google Chrome, Safari, Opera, and Camino. Once Qualys BrowserCheck completes its scan, it lists which plug-ins it scanned, and indicates whether you’re running insecure versions of any of your plug-ins, and if any updates are available. The scan also provides links to where you can download the newest plug-in version, so you don’t have to hunt around for it.
Sample results from a quick Qualys scan. Look at that: The Java plugin needs an update.
Alternatively, you can run a full scan after downloading and installing the Qualys BrowserCheck plug-in, which supports IE, Firefox, and Chrome on Windows—there's no Mac or Linux support for the full scan. This full scan can check all supported browsers you have installed, not just the browser you used to run the scan. And the full scan can also detect other system vulnerabilities as well, such as no automatic Windows Updates or Windows Firewall running, or out-of-date or disabled antivirus software.