Job No. 1 for the new CEO: Revamp the stagnating microblogging service to make it more inviting for regular folks.
Mobile World Congress 2015
PayPal announces acquisition of mobile-wallet maker, while Google unveils another mobile-payments service, in the growing fight for a piece of the smartphone payments market.
With two new "Stagefright" vulnerabilities discovered, almost every Android device ever released is vulnerable to malicious hackers. Fixing the bug isn't simple.
One of Twitter's co-founders has come back to help the troubled social-networking company. Seen as part artist, part visionary, the question facing Dorsey now is whether he can turn the company around.
The two companies strike a partnership to bring mobile payments technology to more than 20 Chevron stations in California.
Jack Ma, co-founder of the Chinese e-commerce giant, is "very interested" in a deal between his Alipay and the new Apple Pay service. He's also bothered that in Chinese movies, the hero always dies.
The search giant's revamped mobile payments effort competes with offerings from Apple and Samsung.
The digital-payments company should see a bright future as a standalone business, in contrast to former parent eBay's need for a turnaround.
The struggles and triumphs of eBay could shape where we buy things online and for how much. Here's why.
The digital payments firm continues its acquisition push ahead of its split from eBay later this month.