Hi Dog_Father, The "jucheck.exe" is the Java update verification process. It is safe to run on computer. To know more about it, you may refer to link: [URL] If you want that every update that needs to be installed on computer should be verified and checked. You may use certificates to protect your personally identifiable information on the Internet, and to protect your computer from unsafe software.  To open Local Security Policy, click Start, point to Settings, click Control Panel, double-click Administrative Tools, and then double-click Local Security Policy. In the details pane, double-click System settings: Use Certificate Rules on Windows Executables for Software Restriction Policies. To enable certificate rules, click Enabled. For more information, you may refer to link: [URL] and [URL]  By enabling this option, you would be setting the browser to check every online application that you run and you might get lot of pop ups or prompts.  Please reply for further clarifications. 
I get updates on a regular basis. From MSFT, Adobe and other companies. How do I make sure they are legitimate, and not masquerading as  well known company, to stick you with a virus?  The latest is Jucheck.exe (a Java update). I looked it up and it appears to be from SunMicro. Is that one safe to run. What I read is that it's important to place in program files, otherwise it can cause trouble.  So, how do you make sure these updates are really from whom they say they are? 
Updates for my PC, are they all safe? How do you tell if they're not who they 
say they are?