Malware protection helps businesses mitigate the risk by being protected from Man-In-The-Browser (MITB), Remote Access Trojan (RAT), high velocity/frequency bot attacks to low-and- slow attacks mimicking legitimate customer behavior, ransomware, key logging attempts, etc.Deep connection analysis technologies detect the use of technologies such as hidden proxies and VPNs and allow the bank to see the true IP address, geolocation and other attributes of each event, backed by global identity data over time.Context-based information detects bot attacks to perform behavioral analysis of users during periods of normal operation and compares such data to that gathered during an attack, enabling the ability to differentiate between a human and a bot the moment they login/transact.I think the easiest way to explain this is to look at ThreatMetrix’s feature list. Facebook was scanning their visitors back in 2016. This means that there are likely a lot of websites doing this.īut wait, this isn’t new either. Not all of these do in browser port scanning.
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Gartner named Acuant, BioCatch, Buguroo, Emailage, Experian, EZMCOM,, IBM Trusteer, ID Analytics, IdentityMind, IDology, iovation, Jumio, Kount, LexisNexis Risk Solutions, Mitek, Nuance, NuData Security (A Mastercard Company), Pindrop, SecuredTorch, ThreatMetrix (A LexisNexis Risk Solutions COmpany), TransUnion, TRUSTID, and Whitepages Pro as Representative Vendors in the market. In this there are a list of Recommended Vendors. Surely they have competitors right? Here’s a report from Gartner regarding Identity Proofing.
So potentially all of these have the technology to do this to their customers.īut wait.
Perhaps extra identity proofing happens only when you login or when you go to purchase something. But I guess ThreatMetrix doesn’t just offer scanning like this, but has other features too. I visited 5 of these sites and watched the network traffic and didn’t see the same scanning behavior. GoPro, WePay, Netflix, Visa, Yandex, TripAdvisor, and a bunch of dating sites and finance sites. I quickly learned that eBay is using a solution called Threat Metrix to conduct this. eBay is not the only ones doing thisĪfter raising these concerns on Twitter I started getting information from people far and wide. Users have reported to me that they see this scanning behavior is permitted in Chrome, Firefox, and Edge when they have no extensions enabled.Īlso it’s worth noting that the tor browser blocks this specifically. Brave and Opera seem to block this by default. There are two browser extension that seem to do pretty good at stopping this:īut some browser block this behavior by default too. Because the website instructed my computer to conduct these scans, and it’s not coming from the internet. It bypasses my firewall, my AV, and my Pi Hole. It’s bypassing all the network security I have put in place. I do not want to allow websites to do this to my computer. Ok first, strait up, this is creepy and I think it’s invasive.
So when you visit the website, it instructs your computer, to check if these 14 ports are open, on your own computer.īy the way, thank you to Charlie Belmer for his blog post Why Is This Website Port Scanning Me which introduced me to this problem, and I only caught that post through this Hacker News posting.Īlso if you want to test this on your own, be aware that eBay only does this on the first visit to the website. If try to connect to that IP you will always be connecting the computer you are on. 127.0.0.1 is the loopback address of every computer in the world.
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This is what I saw.Īs you can see the website has triggered a series of GET requests to 127.0.0.1 on 14 different ports. Today I loaded up Microsoft Edge browser (version 44), enabled developer tools, looked at the network traffic and visited. No this is all done in the browser through javascript, where a website is instructing your computer to port scan itself, then report the results to the website. This isn’t someone firing off a bunch of packets at you on different ports looking to see what you have open.
What it looks likeįirst of all this is not your run of the mill port scanning. This is sneaky and creepy behavior and I want to tell you about it. Some websites can and do port scan you when you visit their site.
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