Security startup Dasient joins Twitter to apply it malware-fighting platform to the "world's largest real-time information network."
The software maker says it filed five lawsuits Thursday to try to slow the growing threat.
Two studies illustrate the hazards of Web surfing with more than 1 million sites infected with malware and more than 40 percent of sites in one study always vulnerable to attacks.
As more users get hit by "drive-by downloads" and "malvertising," companies like Armorize and Dasient offer services to help keep surfers safe.
Apps infected with malware grew five-fold since January, Lookout mobile threat report finds.
Farm Town maker SlashKey warns players of its Facebook game about fake security messages.
Researchers at Avast are pointing fingers at large ad delivery platforms for serving up infected ads in new "malvertising" trend.
CEO Mark Zuckerberg unveils big changes to privacy controls, but they're not enough to silence critics. Also: Justice Department inquires about Apple's hold on digital music.