Website Security News
Identifying website backdoors is not always an easy task. Since a backdoors primary function is to conceal itself while providing unauthorized access, they are often developed using a variety of techniques that can make it challenging to detect. For example, an attacker can inject a…
A few weeks ago, I was manually inspecting some files on a compromised website. While checking on a specific WooCommerce file, I noticed something interesting. Among 246 other lines, this…
Read More about Fake WordPress Functions Conceal assert() Backdoor
In a previous post, I discussed how attackers can trick website owners into installing malware onto a website — granting the attacker the same unauthorized access as if they had…
Read More about “Free” Symchanger Malware Tricks Users Into Installing Backdoor
A large majority of the malware we find on compromised websites are backdoors that allow an attacker to maintain unauthorized access to the site and execute whatever commands they want….
Read More about Backdoor Shell Dropper Deploys CMS-Specific Malware
In an attempt to avoid detection, attackers and malware authors are always experimenting with different methods to obfuscate their malicious code. During a recent investigation, we came across an interesting…
Read More about Backdoor Obfuscation: tempnam & URL Encoding
The Magento 1 EOL date has already passed, however it’s evident that a large number of websites will continue to use it for the foreseeable future. Unfortunately, attackers are also…
“Smoker Backdoor” is a PHP webshell backdoor that uses hexadecimal and decimal obfuscation in conjunction with the PHP function goto to evade detection from malware scanners. The hexadecimal/decimal obfuscation is…
Read More about Smoker Backdoor: Evasion Techniques in Webshell Backdoors
In the past, I have explained how small one line PHP backdoors use obfuscation and strings of code in HTTP requests to pass attacker’s commands to backdoors. Today, I’ll highlight…
Fake WordPress plugins appear to be trending as an effective way of establishing a foothold on compromised websites. During a recent investigation, we discovered a fake component which was masquerading…
Read More about Fake WordPress Plugin SiteSpeed Serves Malicious Ads & Backdoors
One widespread belief among webmasters is that attackers typically only compromise websites in a couple of ways: by exploiting vulnerabilities or stealing login credentials. Although these are certainly two of…
Read More about Pirated WordPress Plugins Bundled with Backdoors
While open-source ecommerce platforms are the most common targets for web skimmers, hackers also target paid-for software — especially if it’s used on high-profile online stores with large user-bases. This…
Read More about PinnacleCart Server-Side Skimmers and Backdoors
