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Yuliyan Tsvetkov

16 posts
Yuliyan is Malware Researcher at Sucuri. He is always somewhere on the Internet digging for new malware and meantime helping extending the benchmarks for the PCI-DSS standard. In his free time you can find him skiing in the big mountain. Find him on Twitter @yuliyantsvetkov
Labs Note
  • Sucuri Labs

Malicious JavaScript Injected in Plugin Widget

  • Yuliyan Tsvetkov
  • December 20, 2016
Each and every day the attackers get more clever and exploit new attack vectors. Sucuri Labs recently found a malicious JavaScript hidden in the database…
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Labs Note
  • Sucuri Labs

Image defacement hides content from search engines

  • Yuliyan Tsvetkov
  • December 1, 2016
Website defacement is still a big issue for various website owners. It directly impacts on your online presence / visibility and as a consequence, it…
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Labs Note
  • Sucuri Labs

Multiple UNIX users symbolic link injector

  • Yuliyan Tsvetkov
  • November 15, 2016
Recently we found a very interesting malware that injects symbolic links in each and every Linux/UNIX home folder. Once the website is infected, it uses…
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Labs Note
  • Sucuri Labs

Mage.js CC Stealer. The Database Version.

  • Yuliyan Tsvetkov
  • October 7, 2016
Every day we find many Magento credit card stealers injected into different files: modules, core files, themes. Magento database is not an an exception. For…
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Labs Note
  • Sucuri Labs

Speeding up indexing of SPAM files via sitemap.xml

  • Yuliyan Tsvetkov
  • January 7, 2016
Remember the wave of HTML files infection back in 2015 affecting outdated WordPress sites? Now it came back more powerful, with more files uploaded via…
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