Website Security News

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 of website compromises. To help educate website owners about potential threats to their environments, we’ve compiled a list of important security updates and vulnerability patches for the WordPress ecosystem this past month. The vulnerabilities listed below are virtually patched by the Sucuri Firewall and existing clients are protected. Continue reading Vulnerability & Patch Roundup — March 2026 at Sucuri Blog.

If you own a WordPress website and ever encountered the “Not Secure” warning, you might have worried that visitors would perceive your site as spam or fraudulent. Not only does this warning impact user trust, but it can also create technical search issues when both HTTP and HTTPS versions of your pages remain accessible or when redirects, canonicals, and sitemaps point to different URL versions. Browsers show the visible security warning, while search engines rely on permanent redirects, canonical URLs, and updated sitemaps to understand your preferred HTTPS pages. Continue reading How to Fix “Not Secure” Warnings and SSL Issues in WordPress (8 Steps) at Sucuri Blog.

Every year, thousands of WordPress sites get compromised, and a surprising number of those infections trace back to a single decision: installing a nulled plugin. Nulled plugins promise premium features for little or no money. The problem is that the “savings” often come attached to malware, broken update paths, SEO damage, and legal headaches that cost far more than a legitimate license ever would. It might seem like a harmless shortcut, but it’s one that can unravel everything you’ve built online. Continue reading The Security Risks of Using Nulled WordPress Plugins at Sucuri Blog.

Web shells are malicious scripts that give attackers persistent access to compromised web servers, enabling them to execute commands and control the server remotely. These scripts exploit vulnerabilities like SQL injection, remote file inclusion (RFI), and cross-site scripting (XSS) to gain entry. Once deployed, web shells allow attackers to manipulate the server, leading to data theft, website defacement, or serving as a launchpad for further attacks. They are especially dangerous because they are also a post-compromise access mechanism (backdoor) rather than a standalone infection. Continue reading Web Shells: Types, Mitigation & Removal at Sucuri Blog.

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 of website compromises. To help educate website owners about potential threats to their environments, we’ve compiled a list of important security updates and vulnerability patches for the WordPress ecosystem this past month. The vulnerabilities listed below are virtually patched by the Sucuri Firewall and existing clients are protected. Continue reading Vulnerability & Patch Roundup — February 2026 at Sucuri Blog.

As breach costs go up and attackers focus on common web features like dashboards, admin panels, customer portals, and APIs, weak access control quickly leads to lost data, broken trust, and costly incidents. The worst part is that many failures are not rare technical flaws but simple mistakes, such as missing permission checks, roles with too much power, or predictable IDs in URLs. This post aims to help you control who can access different parts of your website and explain why it matters.  Continue reading Beyond Login Screens: Why Access Control Matters at Sucuri Blog.

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 of website compromises. To help educate website owners about potential threats to their environments, we’ve compiled a list of important security updates and vulnerability patches for the WordPress ecosystem this past month. The vulnerabilities listed below are virtually patched by the Sucuri Firewall and existing clients are protected. Continue reading Vulnerability & Patch Roundup — January 2026 at Sucuri Blog.

Last month, while working on a WordPress cleanup case, a customer reached out with a strange complaint: their website looked completely normal to them and their visitors, but Google search results were showing something very different. Instead of normal titles and descriptions, Google was displaying casino and gambling-related content. We have been seeing rising cases of spam on WordPress websites. What made this even more confusing was where the spam was appearing. Continue reading Shadow Directories: A Unique Method to Hijack WordPress Permalinks at Sucuri Blog.

Some attackers are increasingly moving away from simple redirects in favor of more “selective” methods of payload delivery. This approach filters out regular human visitors, allowing attackers to serve malicious content to search engine crawlers while remaining invisible to the website owner. What did we find? During a malware investigation, we identified a selective content injection attack inside the main index.php file of a WordPress website. Instead of always loading WordPress normally, this modified file checks who is visiting the site. Continue reading Malware Intercepts Googlebot via IP-Verified Conditional Logic at Sucuri Blog.

We recently handled a case where a customer reported strange SEO behavior on their website. Regular visitors saw a normal site. No popups. No redirects. No visible spam. However, when they checked their site on Google, the search results were flooded with eBay-type-looking websites and “Situs Toto” gambling spam. This is a professional-grade SEO cloaking attack. The malware turns the application into a double agent: it serves your genuine website content to real people but swaps it for a massive list of gambling ads the second a search engine bot crawls the page. Continue reading Google Sees Spam, You See Your Site: A Cloaked SEO Spam Attack at Sucuri Blog.

We recently investigated a case involving a WordPress website where a customer reported persistent fake pop-up notifications appearing on their site. The warnings were urging them to update their browser (Chrome or Firefox), even though their software was already fully up-to-date. What made this case particularly unique was the targeting. The fake alerts were not visible to regular visitors on the public-facing site. They only appeared when the site owner was logged into the wp-admin dashboard. Continue reading Fake Browser Updates Targeting WordPress Administrators via Malicious Plugin at Sucuri Blog.