Large Scale Compromises Leading to Traffic Distribution System
Daniel Cid For the last few weeks we’ve been tracking a large scale decentralized Traffic Distribution System (TDS). It’s using hundreds of compromised sites as their first…
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Website Malware Infections
863 posts
Various Shades of Malware – Abusing Your Resources
Tony Perez We often write about very clear cut cases of malware activity. The attacker is leveraging your traffic, redirecting it to other locations, or injecting things…
Malware Redirection with a Delay
You visit a site and it looks good and clean. However, if you keep the page open, after maybe 20-30 seconds, you get redirected to…
Server Compromises – Attackers Covering Their Tracks
When you’re remediating servers, one of the things you’re always looking for are any traces that show the attacker is trying to cover their tracks.…
Web Server Attacks – Apache Modules, Log Management and RELM
New year, same tricks, mostly because they work. That’s how we’re kicking off the new year folks. In September of 2012, Dennis, of Unmask Parasites,…
Server Compromises – Understanding Apache Module iFrame Injections and Secure Shell Backdoor
There are many ways to inject a malicious payload onto a website. The attacker can modify any of the web files (index.php for example), the…
WordPress SPAM Causing Headaches
Newly Released: On 11/3/2017 we published our guide on how to secure your WordPress site and it also talks about vulnerabilities and best practices. It…
Website Malware – Drupal Injections Targeting Cookies
Many folks are unfamiliar with the Drupal CMS, it doesn’t enjoy the popularity that some others do like WordPress and Joomla, but its a powerful…
Website Malware – Sharp Increase in SPAM Attacks – WordPress & Joomla
This past week we have seen a sharp increase in the use of old tactics designed to poison your search engine results – also known…
Website Malware – Reality of Cross-Site Contaminations
Sometimes you can’t help but put yourself in the shoes of your clients and skeptics and wonder how many times they roll their eyes at…
Web Malware – Working with Evil Backdoors – Part III
The most complicated part of our job, when cleaning compromised web sites, is ensuring we find all backdoors. If we miss one, the site can…