I've been experiencing frequent Safari crashes. The logs reference a plugin: PlugIn Path: /Applications/Safari.app/Contents/Resources/.KeepitCompact.png PlugIn Identifier: .KeepitCompact.png PlugIn Version: ??? (???) I have no idea what this plugin is. A Google search turned up nothing. But note the location: It's embedded into Safari.app itself, not the Library folder. And why does it have a PNG extension? It's not an image file but is in fact a Mach-O universal binary. Even weirder: In the same directory there's another file called .KeepitCompact.xsl. This isn't a style sheet but also a Mach-O executable. The fact that these executables are disguised as data files, slightly hidden (using the "." prefix), and placed in the Safari.app Resources folder -- where executables are not supposed to be -- makes me very suspicious. Is this some kind of malware? Has my machine been infected?