Shortened URLs on Facebook, leading to a risqué webcam video, are actually being used to spread malware.
Lecpetex attackers may have infected up to 250,000 computers, Facebook revealed.
Researchers with PhishLabs analyzed nearly 9,000 phishing kits and learned that financial groups and social networks are most targeted.
The operation previously targeted victims by exploiting bugs in popular software, FireEye said.
The social networking giant worked with Trend Micro and F-Secure to make the free software available to users.
Facebook implemented a mechanism for detecting SSL man-in-the-middle attacks that a student, his academic advisor and two Facebook security experts helped develop.
Twitter implemented a system that identifies suspicious login behavior, as well as simplified the password reset process.
The Covert Redirect vulnerability could be used to, at the very least, steal credentials from users of big name websites, such as Facebook, Google and LinkedIn.
A post claims that Facebook users can gain extra privileges by inserting code into their browser console window, but all it does is follow and "like" posts by the scammer.
According to the programmer, Facebook responded to his findings, calling the attack scenario "interesting," but one it wouldn't fix.
Facebook debunked a reported claim by Mauritania Attacker, the alleged leader of hacktivist collective AnonGhost, that the social media website is vulnerable to DNS attacks.
Researchers identified a vulnerability in WhatsApp that could enable an attacker to intercept shared locations using a man-in-the-middle attack, or a rogue access point.
On Tuesday, the company unveiled the coming changes.
Experts have uncovered a phishing ruse that leverages a fake voting campaign to trick users into giving up their Facebook login credentials.
The social media giant received close to 15,000 submissions, 687 of which were valid.
Hacked Pinterest accounts began posting weight loss spam, and pictures of butts too.
One of the top consumer watchdogs in France has sued social media giants Twitter, Facebook and Google over their data-collection policies.
On Wednesday, a court in Ankara, Turkey overturned the government's ban on Twitter, according to a report by The New York Times.
The Federal Trade Commission (FTC) and California Attorney General Kamala Harris have each filed amicus briefs with a court of appeals disputing the interpretation of child privacy law in a federal case involving Facebook.
According to reports, the Turkish Prime Minister vowed in a speech to "eradicate Twitter."
An email sent out to the social media management platform's users states that the assault began Thursday at 6:45 a.m. PST, making the service temporarily unavailable.
Twitter has scrapped its plans to encrypt its users' direct messages in light of heavy government surveillance, a project previously reported on by the New York Times.
In addition to phoning President Obama, Facebook's CEO published his thoughts on the social networking site.
Security site Malwarebytes.org first warned users about the threat targeting Windows users.
An unknown attacker accessed the pop singer's account for about 15 minutes mid-afternoon on Saturday and tweeted multiple times before Bieber's team regained control.
Twitter accidentally sent out password reset emails to thousands of users due to a system error.
Twitter returned a coveted username - @N - to Naoki Hiroshima on Tuesday, roughly one month after an attacker stole it through extortion.
In a move to bolster privacy, LinkedIn has added a feature that allows users to block other users on the networking platform.
Following the new rules regarding transparency reports by Department of Justice, the social media giant believes further information should be shared, and may seek legal options to protect its First Amendment rights.
Foursquare - a social networking company that relies on users checking in on mobile devices from locations around the world - announced a partnership with Microsoft on Tuesday.