ArcSight to Report Fiscal First Quarter 2009 Financial Results
           

<p>CUPERTINO, CA--(Marketwire - August 27, 2008) -  ArcSight, Inc. (<exchange name="NASDAQ">NASDAQ</exchange>: <ticker name="ARST">ARST</ticker>) today announced
that it will issue a press release reporting financial results for the
fiscal first quarter ended July 31, 2008 after the close of the market on
September 9, 2008.
<p>
ArcSight will host a conference call and live webcast to discuss those
financial results for investors and analysts at 2:00 p.m. Pacific Time on
September 9, 2008. To access the conference call, dial 877-397-0250 for the
U.S. or Canada and 719-325-4916 for international callers. The webcast will
be available live on the Investor Relations section of the company's
website at www.arcsight.com. An audio replay of the call will also be
available to investors by phone beginning at approximately 4:00 p.m.
Pacific Time on September 9, 2008 until 11:59 p.m. Pacific Time on
September 16, 2008, by dialing 888-203-1112 for the U.S. or
           

http://www.marketwire.com/mw/release.do?id=893622&sourceType=3