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 […]
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MTR For Website Troubleshooting
Let’s set the scene: You go to visit a website and you get a “connection timed out” error. Is this a browser, internet, firewall, or hosting server issue? How do I know who to contact to get the issue resolved? Should I use ping, traceroute, or an MTR to get to the bottom of the […]
Fake GIF Leveraged in Multi-Stage Reverse-Proxy Card Skimming Attack
In today’s post we’re going to review a sophisticated, multi-stage carding attack on a Magento eCommerce website. This malware leveraged a fake gif image file, local browser sessionStorage data, and tampered with the website traffic using a malicious reverse-proxy server to facilitate the theft of credit card data, login details, cookies, and other sensitive data […]
Easy Guide to Saving HAR Files and Console Logs for Troubleshooting
When something goes wrong with a website – whether it is a broken design, slow performance, shows an error message or something else, it is sometimes difficult to find the exact cause of the issue just by looking at the page. That’s where the HAR files or browser console errors come into play. These in-built […]
When Good Software Goes Bad
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 but malicious scripts into a site. Every now and then we encounter a case where legitimate software is used for malicious purposes. We recently uncovered a case where Sypex Dumper, […]
Ad-Jacked: Cybercriminals Inject Google Adsense into WordPress
Recently, we’ve encountered cases where WordPress websites were impacted by Google Adsense hijackers. Attackers inject advertisements and scripts that steal website resources and pump ad views for their adsense accounts. This is not the first time we’ve seen attackers abusing popular Google services. In a previous case, we discovered a credit card skimmer hiding inside […]
Fake Font Domain Used to Skim Credit Card Data
Recently, a client of ours came to us concerned about credit card theft on their WordPress site. The client’s users reported that their credit card data had become compromised shortly after purchasing products on our client’s website. When investigating the site, two suspicious symptoms appeared: A strange credit card form, and an unfamiliar domain, which […]
Understanding FTP and SFTP: A Guide to Secure File Transfers
Updating your website means getting files to your server, but the process can feel like a chore when simply navigating in a conventional hosting panel. FTP and SFTP are essential tools for managing files on your server. Whether you’re uploading website content or downloading backups, these protocols offer a straightforward method to handle your site’s […]
Vulnerability & Patch Roundup — March 2025
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 […]
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 are leveraging the mu-plugins directory to hide malicious code. This approach represents a concerning trend, as the mu-plugins (Must-Use plugins) are not listed in the standard WordPress plugin interface, making […]
