Product Update – New Backups Platform
Victor Santoyo Sucuri is pleased to announce the completion of a product upgrade with our new Backups platform. For those already subscribed to our Backups platform, you…
WordPress Redirect Malware Hidden in Google Tag Manager Code
Puja Srivastava Last month, a customer contacted us after noticing their WordPress website was unexpectedly redirecting to a spam domain. The redirection occurred approximately 4-5 seconds after…
Stealthy PHP Malware Uses ZIP Archive to Redirect WordPress Visitors
Last month, a customer contacted us, concerned about persistent and inexplicable redirects on their WordPress website. Our investigation quickly unearthed a sophisticated piece of malware…
Attackers Inject Code into WordPress Theme to Redirect Visitors
Matt Morrow In a recent article we discussed some of the reasons sites are frequently attacked. That article covered browser redirects, and we’ll explore an example of…
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…
Vulnerability & Patch Roundup — June 2025
Sucuri Malware Research Team Vulnerability reports and responsible disclosures are essential for website security awareness and education. Automated attacks targeting known software vulnerabilities are one of the leading causes…
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…
Malicious WordPress Plugin Creates Hidden Admin User Backdoor
I recently wrote about a case where a malicious plugin was used to steal admin credentials. Here we will examine yet another malicious plugin that…
Analysis of a Malicious WordPress Plugin: The Covert Redirector
A few weeks ago, we received a support request from a website owner who was experiencing unexpected redirects. Visitors landed on the website normally, but…
Understanding SSRF: Abusing Server Trust from the Inside Out
Kyle Knight In our daily interactions online, trust is a fundamental currency. We trust servers to handle our data, process our requests, and reliably deliver content. But…