Microsoft on Monday released its Security Intelligence Report, which covers the first half of 2008. The report, according to the software maker, is an in-depth look at the overall software security threat environment. It’s based on data received from hundreds of millions of computers around the globe. During the first half of 2008, the report found, software makers and security vendors made significant inroads in protecting their customers from malicious threats. As a result, reports of vulnerabilities have gone down.