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Denis Sinegubko

194 posts
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.
Web Swiper in Image Title
  • Ecommerce Security
  • Magento Security
  • Website Malware Infections
  • Website Security

Web Swiper in Image Title

  • Denis Sinegubko
  • January 27, 2020
Cybercriminals regularly try a variety of approaches to hide their malicious code — web skimmers are well known for using all sorts of obfuscation and…
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Fake AmeriCommerce Shopping Cart
  • Ecommerce Security
  • Website Malware Infections
  • Website Security

Fake AmeriCommerce Shopping Cart

  • Denis Sinegubko
  • January 23, 2020
Our malware analyst Liam Smith recently found malware on a client’s site that targets ecommerce sites powered by AmeriCommerce software. A popular ecommerce software solution…
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Soak Soak Throwback Threat Thursday
  • Website Malware Infections
  • Website Security
  • WordPress Security

5 Year Anniversary of the SoakSoak Malware Tsunami

  • Denis Sinegubko
  • December 19, 2019
This is a story about the SoakSoak malware campaign that proved that you can’t underestimate impact of security issues in popular premium software. These days,…
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Unmasking Black Hat SEO
  • Website Security
  • WordPress Security

Unmasking Black Hat SEO for Dating Scams

  • Denis Sinegubko
  • December 12, 2019
Malware obfuscation comes in all shapes and sizes — and it’s sometimes hard to recognize the difference between malicious and legitimate code when you see…
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Vulnerable Versions of Adminer as a Universal Infection Vector
  • Magento Security
  • Sucuri
  • Website Malware Infections
  • Website Security
  • WordPress Security

Vulnerable Versions of Adminer as a Universal Infection Vector

  • Denis Sinegubko
  • November 9, 2019
This past week, we’ve been monitoring a new wave of website infections mostly impacting WordPress and Magento websites. We found that hackers have been injecting…
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  • Ecommerce Security
  • Magento Security
  • WordPress Security

Skimmers for Both Magento and WordPress

  • Denis Sinegubko
  • November 7, 2019
We often write about malware that steal payment information from sites built with Magento and other types of e-commerce CMS. When discussing credit card skimmers…
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Labs Note
  • Sucuri Labs
  • Website Malware Infections
  • Website Security

Size for Opera: Hiding Spammy Links

  • Denis Sinegubko
  • November 5, 2019
There are many different tricks hackers use to make injected spam links invisible to regular visitors. Below is an example employed by one link spam…
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  • Website Malware Infections
  • Website Security
  • WordPress Security

Pharma Spam Redirects to .su & .eu Sites

  • Denis Sinegubko
  • November 4, 2019
We regularly clean all sorts of black hat SEO infections. During these infection cleanups, we often find compromised websites redirecting visitors to fake “Canadian Pharmacy”…
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HTML entity encoding in WordPress malware
  • Website Security
  • WordPress Security

Data URLs and HTML Entities in New WordPress Malware

  • Denis Sinegubko
  • October 30, 2019
Last week, an ongoing WordPress malware campaign started a new wave which included a variety of experimental injection types. Scripts as Data URLs The first…
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Fake UpdraftPlus WordPress Plugin
  • Website Security
  • WordPress Security

Fake UpdraftPlus Plugins

  • Denis Sinegubko
  • October 17, 2019
We often find various fake WordPress plugins installed by hackers during website cleanups. Recently, we’ve noticed a new wave of infections that install fake plugins…
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Labs Note
  • Magento Security
  • Sucuri Labs
  • Website Malware Infections

Sucuri_encrypted: Magento Malware

  • Denis Sinegubko
  • October 17, 2019
In an effort to make malicious code appear to be credible, hackers commonly piggyback on the names of reputable, well-known companies and services. Typical examples…
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