As the list of major sites hit by Heartbleed grows, LastPass is helping its users figure out which accounts need password changes.
Tumblr joins a large number of online services that are making it harder for hackers to break into your account thanks to two-factor authentication.
comScore's July traffic numbers show Yahoo catapulted to the top of the Internet. But how?
Not just for kittehs and Pr0n, government taps Tumblr for its Intelligence transparency site.
Tumblr is working to resolve an issue causing seemingly random content to be posted to people's blogs that they didn't put there themselves, with pornography showing up in some instances.
Tumblr, the blogging site recently acquired by Yahoo, has released a security update for its iPhone and iPad apps that it said addresses an issue that allowed passwords to be compromised in certain circumstances.
Tech companies' spending billions of dollars on up-and-coming social sites is nothing new, but a few past deals might surprise you.
A new site measures your social network greatness not by follower count, but by how interesting you are. Finally.
Ads arrive on desktop Tumblr users’ dashboards just days after Yahoo bought the popular site.
Yahoo may have just spent more than $1 billion to add Tumblr to its portfolio, but changes to Flickr grabbed much of the focus at a Monday afternoon press briefing.