Trend involves exploiting vulnerabilities that go as far back as 2009 in Office documents. Other cross-platform, third-party technologies favored by hackers include Java, Adobe PDF and Adobe Flash. Microsoft spotted the latest trend while investigating malware called Backdoor Olyx, which the software vendor first spotted a year ago. As much as 60 percent of Java installations are never updated, according to security vendor Rapid7. The best defense is to keep security software up-to-date and install the latest operating system and patches.”]