If a PDF is downloaded to your Mac or accessed by its browser your Acrobat Reader 9.x-8.x and/or Acrobat 9.x-8.x will crash – or worse, allow a hacker access to attack your operating system by taking control. The US-CERT (United States Computer Emergency Readiness Team) has recommended the following to those who have yet to be affected:
1. Practice common sense and don’t accept or open unsolicited or suspicious PDFs.
2. Use a different PDF handler such as Preview.
1. Launch Adobe Acrobat Reader.
2. Open the Edit menu.
3. Select the Preferences… option.
4. Choose the Internet section.
5. Uncheck the “Display PDF in browser” check box.
4. Change settings within Acrobat and your default browsers from automatically opening, downloading or displaying a PDF.
Adobe expects to release patches by May 12, 2009 via it updater and on its website. More information can be found on Adobe Product Security Incident Response Team blog or on the US-CERT site.