A sweeping U.S. Senate measure that would <A HREF="http://news.zdnet.com/2100-1009_22-5886478.html?tag=zdnn.alert">stiffen security requirements and penalties</A> for so-called brokers of personal data may go up for a committee vote next week, a representative said Friday. Sen. Arlen Specter, a Pennsylvania Republican, and Sen. Patrick Leahy, a Vermont Democrat, originally introduced the Personal Data Security and Privacy Act in June as part of a legislative outcry directed at a series of breaches by big-name companies such as ChoicePoint, Bank of America, and Visa.