An Israeli security company is warning users of Yahoo’s Web e-mail service and Microsoft’s Hotmail service of a serious security flaw that could allow remote attackers to run malicious computer ...

Hotmail and Yahoo have left open a security hole that could be exploited to create a self-mailing worm that, while not damaging, could clog Internet mail servers, a security expert said this week. The ...

Yahoo Mail isn’t the only Web-based mail service that could be duped into giving up someone else’s account password, the tactic that some have argued was used to break into Gov. Sarah Palin’s e-mail ...

It looks like Google Gmail wasn’t the only online service pummeled in recent hack attacks: It turns out Yahoo! Mail and Hotmail were, too. That, and while the targeted attacks—technically dubbed ...

Yahoo is rolling out an update to its Mail app for iPhone and iPad that introduces a refreshed design, as well as new features including smarter search, contacts management and rich compose. Alongside ...