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Malicious Subdirectories Strike Again

In a previous post, we illustrated how attackers were fetching information from compromised sites under their control to display spam content on other hacked websites. By adding malicious files into a directory and using the victim’s database structure, attackers were able to inject ads and promote their products. This time, attackers used a similar technique More Info »

Stored XSS in WordPress Core

As you might remember, we recently blogged about a critical Content Injection Vulnerability in WordPress which allowed attackers to deface vulnerable websites. While our original disclosure only described one vulnerability, we actually reported two to the WordPress team. As it turns out, it was possible to leverage the content injection issue to achieve a stored cross-site scripting attack. This issue More Info »

SF9 Realex Magento Module Targeted by Credit Card Scrapers

Attackers are constantly developing new techniques to compromise ecommerce websites and steal sensitive data. Over the last several weeks, we tracked massive attacks against Magento sites where attackers are injecting malicious scripts that create functions designed to steal credit card information. This technique is not restricted to Magento core files. These days, attackers are trying More Info »

Bank Phishing Incident Analysis

Everyone has received a phishing scam via email at one point or another. Thanks to modern anti-spam technology, most of these messages are blocked from ever reaching our inboxes. I said most of them. Today I got one that was able to get through the bouncer: The subject (in Brazilian Portuguese and poorly crafted) translates More Info »

Labs Notes Monthly Recap – Feb/2017

Every month we recap the latest posts on Sucuri Labs, written by our Malware Research Team (MRT) and Incident Response Team (IRT). The Sucuri Labs website provides technical analysis and industry updates directly from our teams on the front line. You can read past-monthly recaps for an overview of the posts we’ve released. Last month, More Info »

The Story of an Expired WHOIS Server

We write quite often about SEO spam injections on compromised websites, but this is the first time we have seen this blackhat tactic spreading into the WHOIS results for a domain name. If you are not familiar with “WHOIS“, it is a protocol used to check who owns a specific domain name. These simple text More Info »

SQL Injection Vulnerability in NextGEN Gallery for WordPress

As part of a vulnerability research project for our Sucuri Firewall (WAF), we have been auditing multiple open source projects looking for security issues. While working on the WordPress plugin NextGEN Gallery, we discovered a severe SQL Injection vulnerability. This vulnerability allows an unauthenticated user to grab data from the victim’s website database, including sensitive More Info »