Software firm Websense to acquire PortAuthority

Websense Inc., a maker of software to monitor employees’ Internet use, agreed to buy Palo Alto-based PortAuthority Technologies Inc. for about $90 million in cash to add business software that prevents leaks of confidential information.

The acquisition is expected to cut profit by 10 cents to 15 cents a share in 2007 and add slightly to earnings in 2008, San Diego-based Websense said.