Following last week's hack, Twitter appears to be planning to make logins more secure by introducing two-factor authentication.
Twitter is buying social analytics company Bluefin Labs in what's reported to be its biggest acquisition yet.
Twitter has positively identified "unauthorized" attempts to access user data, discovering at least one live attack and shutting down the process moments later.
In a landmark ruling, a French court has ordered Twitter to hand over details of users who posted racist and anti-semitic content.
If a picture is worth a thousand words, six seconds of video ought to be plenty for anyone used to expressing themselves in 140 characters or fewer.
Just weeks before accepting a $1bn offer from Facebook, Instagram CEO Kevin Systrom agreed to sell the company to Twitter - but then changed his mind, according to a report.
As promised, Twitter has added Instagram-style features to its service, allowing users to edit photos and apply filters.
Facebook-owned Instagram has disabled a feature that allowed Twitter users to view full versions of photos on the social network. Without Twitter Cards, pictures now appear distorted or cropped.
Social media analytics service PeopleBrowsr has won a temporary restraining order against Twitter, forcing it to carry on supplying the company with its firehose of data.
Over the last 24 hours, the Israeli Defense Forces (IDF) has been live-tweeting its attacks on the Hamas-controlled Gaza strip, including the assassination of a Hamas military leader.
Twitter acknowledges unintentionally resetting a significant number of account passwords after an unknown number of users were compromised.
People sent more than 31 million election-related tweets on Tuesday, says Twitter - and the Fail Whale was nowhere to be seen.
Although the new Xbox 360 Dashboard adds a lot of features, it gets rid of two of the most popular apps.
Twitter has blocked access to a neo-Nazi account at the request of the German government, the first time it's put its local censorship plans into action.
Twitter users are receiving direct messages, purportedly from friends, alerting them to Facebook videos in which they are said to feature.
Twitter's made changes to its API, restricting the creation of large-scale third party applications - and developers aren't at all happy about it.
The newest rising star in social media is no longer invitation-only.
Reuters has been hacked, twice, by Syrian pro-government activists.
Twitter is now ranking the pulse of the country in a numerical Obama-v-Romney scale.
Apple wants to increase its stake in the world of social media.