Job No. 1 for the new CEO: Revamp the stagnating microblogging service to make it more inviting for regular folks.
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.
A mobile payment system that works almost everywhere? That's the Samsung Pay promise. We take it for a test drive in shops around San Francisco.
Buying the new iPhone? You'll need to crunch numbers to decide between traditional contracts and monthly payments. Learn about Apple's yearly upgrade planand how T-Mobile's iPhone 6S comes at tempting low price.
Buying the new iPhone? You'll need to crunch numbers to decide between traditional contracts and monthly payments. Learn about Apple's yearly Upgrade plan, and how T-Mobile's iPhone 6S comes at tempting low price.
The search giant's revamped mobile payments effort competes with offerings from Apple and Samsung.
Jack Dorsey is now CEO of both Twitter and Square. Running one big company is tough. Now he has two.
The Galaxy Note 5 and S6 Edge+ will hit stores before Apple's next iPhone, offering mobile payment and a keyboard cover accessory. Samsung also shows off its round Gear S2 smart watch.
A chip implanted in new cards is designed to stop cybercrime. Starting Thursday, stores that haven't upgraded their card-reading terminals will be on the hook for fraudulent charges.