Mac and Windows users threatened by rampant .om domain 'typosquatting'

Typing the wrong URL could lead to malware for Mac and Windows PCs.

Mac and Windows users could end up in some bad Internet neighborhoods by not typing the “c” in “.com” websites.

As reported by Threatpost, Security vendor Endgame recently discovered widespread “typosquatting” with the “.om” domain name, in which bad actors attempt to dupe people who mistype common URLs. In this case, more than 300 malicious URLs have latched onto the Country Code Top-Level Domain for Oman, which users might accidentally enter instead of .com” Some examples include,, and

The danger is particularly acute for Mac users, who according to Endgame might be bombarded with pop-ups to update a new version of Adobe Flash Player. While tech-savvy users may recognize this type of attack—or know to stop using Flash Player entirely—users who are follow through on the update prompts may be unknowingly installing adware on their machines. This adware, called Genieo, will then attempt to inject targeted advertising into the user’s web browser.

That’s not to say Windows users aren’t at risk. Visiting one of the affected sites with a Windows machine may redirect users to various scareware, adware, or survey sites, several of which try to coerce users into installing harmful or unnecessary programs. However, Endgame was not able to duplicate the Flash Player update prompt that appears on some sites for Mac users.

We tested several of the sites on Endgame’s master list, and indeed found that some redirected to questionable surveys, untrustworthy streaming video sites, or outright scary warning pages. But in some cases—as with—the URLs did redirect to the intended location. ( seems to have invoked the service of a company that negotiates deals with cybersquatters, though it’s also possible for companies to wage a legal battle or raise a dispute with ICANN.)

Why this matters: Typosquatting is not a new phenomenon, and brands generally do a good job of protecting users against obvious misspellings. The abuse of .om appears to be an anomaly, in which hundreds of popular sites now have bad actors sitting on not-so-unlikely typos. With any luck, the exposure will prompt those sites to take action, but users should be extra careful with their URL spellings in the meantime.

Join the CSO newsletter!

Error: Please check your email address.

More about Hotels.comICANNindeed

Show Comments

Featured Whitepapers

Editor's Recommendations

Solution Centres

Stories by Jared Newman

Latest Videos

  • 150x50

    CSO Webinar: The Human Factor - Your people are your biggest security weakness

    ​Speakers: David Lacey, Researcher and former CISO Royal Mail David Turner - Global Risk Management Expert Mark Guntrip - Group Manager, Email Protection, Proofpoint

    Play Video

  • 150x50

    CSO Webinar: Current ransomware defences are failing – but machine learning can drive a more proactive solution

    Speakers • Ty Miller, Director, Threat Intelligence • Mark Gregory, Leader, Network Engineering Research Group, RMIT • Jeff Lanza, Retired FBI Agent (USA) • Andy Solterbeck, VP Asia Pacific, Cylance • David Braue, CSO MC/Moderator What to expect: ​Hear from industry experts on the local and global ransomware threat landscape. Explore a new approach to dealing with ransomware using machine-learning techniques and by thinking about the problem in a fundamentally different way. Apply techniques for gathering insight into ransomware behaviour and find out what elements must go into a truly effective ransomware defence. Get a first-hand look at how ransomware actually works in practice, and how machine-learning techniques can pick up on its activities long before your employees do.

    Play Video

  • 150x50

    CSO Webinar: Get real about metadata to avoid a false sense of security

    Speakers: • Anthony Caruana – CSO MC and moderator • Ian Farquhar, Worldwide Virtual Security Team Lead, Gigamon • John Lindsay, Former CTO, iiNet • Skeeve Stevens, Futurist, Future Sumo • David Vaile - Vice chair of APF, Co-Convenor of the Cyberspace Law And Policy Community, UNSW Law Faculty This webinar covers: - A 101 on metadata - what it is and how to use it - Insight into a typical attack, what happens and what we would find when looking into the metadata - How to collect metadata, use this to detect attacks and get greater insight into how you can use this to protect your organisation - Learn how much raw data and metadata to retain and how long for - Get a reality check on how you're using your metadata and if this is enough to secure your organisation

    Play Video

  • 150x50

    CSO Webinar: How banking trojans work and how you can stop them

    CSO Webinar: How banking trojans work and how you can stop them Featuring: • John Baird, Director of Global Technology Production, Deutsche Bank • Samantha Macleod, GM Cyber Security, ME Bank • Sherrod DeGrippo, Director of Emerging Threats, Proofpoint (USA)

    Play Video

  • 150x50

    IDG Live Webinar:The right collaboration strategy will help your business take flight

    Speakers - Mike Harris, Engineering Services Manager, Jetstar - Christopher Johnson, IT Director APAC, 20th Century Fox - Brent Maxwell, Director of Information Systems, THE ICONIC - IDG MC/Moderator Anthony Caruana

    Play Video

More videos

Blog Posts