SAN FRANCISCO — Microsoft Corp. is lashing out at Google Inc., extending hostilities between two of the most prominent corporations in the technology industry. Microsoft claimed Google has been misleading customers about the security certification of its suite of software programs for governments. Microsoft's deputy general counsel, David Howard, blogged on Monday about a newly unsealed court document that shows that "Google Apps for Government" hasn't been certified under the Federal Information Security Management Act.

SAN FRANCISCO — Hewlett-Packard Co. has filed a lawsuit against a former executive over allegations he took trade secrets with him when he went to work for rival Oracle Corp. The case against Adrian Jones, who was a senior vice president in HP's server, storage and networking division in Asia, shows the growing rancor between the Silicon Valley technology titans. HP's and Oracle's decades-long partnership is being strained by growing competition between the companies.

SAN FRANCISCO — The company at the center of a data heist involving Best Buy, Citigroup, and other major brands said Wednesday that the theft of potentially millions of names and email addresses won't significantly slow its email marketing juggernaut. Epsilon, a subsidiary of Alliance Data Systems Corp., was the victim of a hacking attack that triggered scores of public warnings this week from major retailers, banks and others.