Uncovering a Stealthy WordPress Backdoor in mu-plugins
Puja Srivastava Recently, our team uncovered a particularly sneaky piece of malware tucked away in a place many WordPress users don’t even know exists: the mu-plugins folder.…
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Website Backdoor
171 posts
Fake Spam Plugin Uses Victim’s Domain Name to Evade Detection
Kayleigh Martin During our investigation of an SEO spam infection (spam content designed to manipulate search engine results), we discovered a nicely crafted plugin that named itself…
Stealthy WordPress Malware Drops Windows Trojan via PHP Backdoor
Last month, we encountered a particularly interesting and complex malware case that stood out from the usual infections we see in compromised WordPress websites. At…
The Case of Hidden Spam Pages
Ben Martin Spammy posts and pages being placed on WordPress websites is one of the most common infections that we come across. The reason being is that…
When Good Software Goes Bad
Matt Morrow Most often bad actors try their best to hide their activities by using obfuscated code or by uploading fake plugins or themes that inject simple…
Hidden Malware Strikes Again: Mu-Plugins Under Attack
At Sucuri, our security researchers continually monitor for new malware variants and infection techniques targeting WordPress websites. Recently, we’ve uncovered multiple cases where threat actors…
Fake Cloudflare Verification Results in LummaStealer Trojan Infections
Today’s blog post will be a follow up to a previous article we posted a few weeks ago: We continue to see new variants of…
Credit Card Skimmer and Backdoor on WordPress E-commerce Site
The battle against e-commerce malware continues to intensify, with attackers deploying increasingly sophisticated tactics. In a recent case at Sucuri, a customer reported suspicious files…
WordPress ClickFix Malware Causes Google Warnings and Infected Computers
Since December of last year there has been a new fake Google reCAPTCHA campaign making its way through the WordPress world. Very similar to malware…
Hidden Backdoors Uncovered in WordPress Malware Investigation
At Sucuri, we often encounter cases where malware is deeply embedded in websites, hidden in files and scripts that can easily escape detection. In this…
Backdoors: The Hidden Threat Lurking in Your Website
Kyle Knight Website backdoors are a silent yet deadly threat to website security. These stealthy mechanisms bypass standard authentication, providing attackers with persistent, unauthorized access to a…