I was browsing some sites (won't mention what kind) on Mavericks using Chrome, and all of a sudden it said my java is outdated and AUTOMATICALLY downloaded a file called "java_update" to my pen drive (I have it set to automatically download files to my pen drive not my SSD). I have Chromes phishing and malware protection on. I ran ClamXav, nothing detected. Then I booted into Windows 7, scanned the file with WebRoot and it said it was not a threat. Then I scanned my entire computer with WebRoot and it said no threats detected. Then I deleted the file while still logged into Windows. Now I'm stressed out because I know it's malware and am afraid something might be lurking on my computer on the Mac side which is where it got downloaded (or maybe even the Windows side for all I know).