Google fired back on Sunday at Microsoft's $44.6 billion bid to acquire Yahoo, accusing Microsoft of seeking to extend its computer software monopoly deeper into the Internet realm.

David Drummond, a Google senior vice president and its chief legal officer, said in a blog post that the combination of Microsoft and Yahoo could <A HREF="http://biz.yahoo.com/rb/080203/yahoo_microsoft_google.html">undermine the open competition that has fueled more than a decade of Web innovation.</A>