Old code in Windows is a security threat. Microsoft is attempting to quickly retire old code in its Windows operating system and other software as a result of the company's four-month-old "trustworthy computing" initiative. The revelation follows last week's warning that a serious vulnerability in Microsoft's Internet Explorer occurred in the software supporting a decade-old protocol that has rarely been used since the World Wide Web became popular. The company is rushing to eliminate old code as a result of criticism that Microsoft's security initiative has been slow to show results. The Company has reported more than 30 vulnerabilities since the initiative began.