The main purpose of the digital certificate is to ensure that the application belongs to the entity to which the certificate was issued. The Sun Microsystems digital certificate does not guarantee that a signed application is safe to run, but rather informs the user that the software was digitally signed by Sun Microsystems and verified by a trusted Certificate Authority (CA).
Sun Microsystems is a multinational vendor of computers, computer software and hardware, and information technology services. Sun is a proponent of open systems in general and UNIX in particular and a major contributor of open source software. Sun filed its initial public offering on March 4, 1986, and it used the stock symbol SUNW until 2007, when it began to use JAVA to promote brand recognition. Sun was purchased by Oracle Corporation in 2009. www.sun.com