Seven years ago, the SANS Institute and the National Infrastructure Protection Center (NIPC) at the FBI released a document summarizing the Ten Most Critical Internet Security Vulnerabilities. Thousands of organizations relied on that list, and on the expanded Top-20 lists that followed in succeeding years, to prioritize their efforts so they could close the most dangerous holes first.The threat landscape is very dynamic, which in turn makes it necessary to adopt newer security measures. Just over the last year, the kinds of vulnerabilities that are being exploited are very different from the ones being exploited in the past. Here are some observations: