Facebook has boosted its Anti-Virus Marketplace with the addition of products from seven new firms.
Users can now download six-month free trials of software from Avast, AVG, Avira, Kaspersky, Panda, Total Defense, and Webroot - in addition to existing products from Microsoft, McAfee, TrendMicro, Sophos, and Symantec.
"Our new anti-virus partners bring with them both the latest software and comprehensive intelligence," the Facebook Security team wrote in a blog post.
Additionally, existing partners will begin offering anti-virus software for mobile devices.
The 12 companies will also work together to improve Facebook's URL blacklist system, which scans trillions of clicks per day, ensuring that the sites visited by users are safe.
"This means that whenever you click a link on our site you are protected both by Facebook and 12 of the industry leaders in computer security," the blog said.
"When Kaspersky Lab was founded 15 years ago, we could only imagine the ways technology would interconnect the citizens of the Internet and what a huge impact this would have on individuals and society as a whole," President Steve Orenberg said in a statement.
"It takes a blend of online awareness and top-notch security technology to be protected online," said Costin Raiu, director of Kaspersky's Global Research and Analysis team. "One cannot take place without the other – and by partnering with Facebook, Kaspersky Lab intends to provide both."
Facebook opened its marketplace in April, with offerings from McAfee, Symantec, Microsoft, Sophos, and Trend Micro. More than 30 million users have visited the AV Marketplace in the six months since its launch.
Meanwhile, in July, the social network announced that users who suspect malware has been installed on their device can run a free check via McAfee's Scan and Repair or Microsoft's Security Essentials.
To download free anti-virus software for PC, Mac, and mobile, visit Facebook's AV Marketplace.