Denis Sinegubko is Sucuri’s Senior Malware Researcher who joined the company in 2013. Denis' main responsibilities include researching emerging threats and creating signatures for SiteCheck. The founder of UnmaskParasites, his professional experience covers over 20 years of programming and information security. When Denis isn’t analyzing malware, you might not find him online at all. Connect with him on Twitter.
You might know Google popular services: Google Ads, AdSense and DoubleClick. You might even know scripts and domains they use. For example, DoubleClick loads scripts…
Many black hat SEO campaigns use cloaking on hacked sites. Malicious scripts only inject spammy content when search engine crawlers request web pages on compromised…
Some webmasters only check recently modified files when searching for malware. It may work sometimes, but many infections don’t change files’ time-stamps. There is the…
Last March we described a WordPress attack that was responsible for hidden iframe injections that resembled Darkleech injections: declarations of styles with random names and…
Recently I analyzed a porn doorway script and found an interesting way to obfuscate an IP address there. $adr1 = “………………………………………………………………………………………………………………………………………………………..”; $adr2 = “………………………………………………………………………………………………………………………………………………………………………………………………………………..”; $adr3…
We are currently seeing a massive attack on Magento sites where hackers inject malicious scripts that create iframes from “guruincsite[.]com“. Google already blacklisted about seven thousand sites because…
These days we rarely see Microsoft Word malware on websites, but it still exists and compromised websites can distribute this kind of malware as well. It’s…