Microsoft Corp.

Investors shifted toward riskier stocks in the third quarter, helping push major U.S. indexes to record highs and lifting optimism that stocks’ seven-year bull run will continue despite sputtering corporate earnings.

Hackers used an army of hijacked security cameras and video recorders to launch several massive internet attacks last week, prompting fresh concern about the vulnerability of millions of “smart” devices in homes and businesses connected to the internet.

Looking at the S&P 500 for a second consecutive year, the CPA-Zicklin Index found a greater number of companies are making public their political spending and the policies guiding this type of expense.

Salesforce.com said it would press regulators in the U.S. and Europe to block Microsoft’s $26.2 billion acquisition of LinkedIn, citing antitrust issues.

Microsoft is concentrating its artificial-intelligence efforts under one roof as veteran executive Qi Lu stepped down to focus on recovering from a bicycle accident.

The three year effort to integrate the IT systems of American Airlines and the former US Airways reaches another milestone this weekend as American shifts the planes and pilots to a single operating system. They will use American's massive flight operating system, which runs 500 applications.

Deploying an automatic password reset in the wake of a cyberattack, a move Yahoo has so far avoided, may wind up locking users out of their email accounts, online security experts say.

Apple and Deloitte & Touche have formed a service called Enterprise Next, through which 5,000 Deloitte consultants will advise clients in a range of industries on using Apple mobile devices.

Cloud computing has thrown computer makers into a forbidding landscape where prospective customers have incentives to rely on external service providers rather than buying hardware. But some have found a key ally in one of the biggest cloud providers, Microsoft.

More U.S. businesses are bolstering efforts to retain top executives of acquired concerns because unwanted exits can doom a takeover.