<p>SAN FRANCISCO, California (Reuters) -- Computer security experts say the recent "SQL Slammer" worm, the worst in more than a year, is evidence that Microsoft's year-old security push is not working.</p>
<p>"Trustworthy Computing is failing," Russ Cooper of TruSecure Corp. said of the Microsoft initiative. "I gave it a 'D-minus' at the beginning of the year, and now I'd give it an 'F."'</p>