Microsoft on Thursday released updates for three, free Security Development Lifecycle (SLD) tools designed to aid with the design and verification of applications. The updated tools – Threat Modeling Tool v3.1.8, MiniFuzz Tool v1.5.5 and RegExFuzz Tool v1.1.0 – include fixes for security and stability bugs, Microsoft said. In addition, the tools now add support for the 2010 versions of Microsoft's development environment, including Visual Studio and Team Foundation Server. Microsoft's SDL tools have been downloaded nearly 700,000 times since 2008, according to the Redmond, Wash.-based computing giant.