Another two IT industry figures have been confirmed among those killed in the attack on the World Trade Center on Tuesday.
James Hayden, chief financial officer at ecommerce software company Netegrity, was on United Airlines Flight 175, the second plane to hit the Center. Hayden, 47, leaves a wife and two children.
Netegrity chairman and chief executive officer Barry Bycoff said: "I speak on behalf of the entire company in conveying our deepest sadness at the tragic loss of an incredible human being and friend. Our sympathies are with his family and friends during this very difficult time."
Phil Rosenzweig, a software organisation director with Sun Microsystems, was among those killed on American Airlines flight 11, the first plane to crash. Sun said that all 340 of its workers based on floors 25 and 26 of the Center made it out safely.
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