Grayware is a tricky security problem, but there are steps you can take to defend your organization when you recognize the risk.

Everyone has seen them: applications that come on many new systems offering services with unfamiliar names, or apps that have familiar names but are offered on sites that aren't from their publishers. They're grayware – or "potentially unwanted applications" – and they're an ongoing issue for computer security.

Grayware's nature makes it difficult for organizations to keep it away from their systems. "It's not a technical problem, it’s a classification problem. There is a thin line being malicious or not and the operators play with the line. Which limits what researchers and law enforcement can do," said Vitor Ventura, senior security researcher at Cisco Talos, in an email interview.

Some IT professionals might be tempted to ignore grayware while they focus on more obvious malware and other threats. But there are legitimate reasons not to.

"Oh, it's horrible," says Chet Wisniewski, principal research scientist at Sophos. "Not only are you getting something that's annoying to the user, it's often more than doubling the attack surface of your computer because of the additional amount of Internet-facing code that's often poor quality." That's in addition to the privacy and productivity implications of code that tracks activity and pops up unwanted ads, he says.

IT and security teams need to consider a number of factors about grayware, both in terms of what it is and how to deal with it. Without many automation option to help, response is up to a well-informed staff.

(Image: typographyimages)

About the Author(s)

Curtis Franklin, Principal Analyst, Omdia

Curtis Franklin Jr. is Principal Analyst at Omdia, focusing on enterprise security management. Previously, he was senior editor of Dark Reading, editor of Light Reading's Security Now, and executive editor, technology, at InformationWeek, where he was also executive producer of InformationWeek's online radio and podcast episodes

Curtis has been writing about technologies and products in computing and networking since the early 1980s. He has been on staff and contributed to technology-industry publications including BYTE, ComputerWorld, CEO, Enterprise Efficiency, ChannelWeb, Network Computing, InfoWorld, PCWorld, Dark Reading, and ITWorld.com on subjects ranging from mobile enterprise computing to enterprise security and wireless networking.

Curtis is the author of thousands of articles, the co-author of five books, and has been a frequent speaker at computer and networking industry conferences across North America and Europe. His most recent books, Cloud Computing: Technologies and Strategies of the Ubiquitous Data Center, and Securing the Cloud: Security Strategies for the Ubiquitous Data Center, with co-author Brian Chee, are published by Taylor and Francis.

When he's not writing, Curtis is a painter, photographer, cook, and multi-instrumentalist musician. He is active in running, amateur radio (KG4GWA), the MakerFX maker space in Orlando, FL, and is a certified Florida Master Naturalist.

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