Security Education Archives

Understanding Denial of Service and Brute Force Attacks – WordPress, Joomla, Drupal, vBulletin

Tony Perez

March 12, 2014

Many are likely getting emails with the following subject header: Large Distributed Brute Force WordPress Attack Underway – 40,000 Attacks Per Minute. Just this week…

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More Than 162,000 WordPress Sites Used for Distributed Denial of Service Attack

Daniel Cid

March 10, 2014

Distributed Denial of Service (DDoS) attacks are becoming a common trend on our blog lately, and that’s okay because it’s a very serious issue for…

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Highly Effective Joomla Backdoor with Small Profile

Fioravante Souza

February 27, 2014

It feels like every day we’re finding gems, or what appear to be gems to us. We try to balance the use of the term,…

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Sucuri CloudProxy Website Firewall Improvements

Daniel Cid

February 25, 2014

If you are are a regular reader of our blog you probably know about our CloudProxy Website Firewall, it launched publicly a year ago. Since…

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Mysterious Zencart Redirects Leverage HTTP Headers

Denis Sinegubko

February 16, 2014

About a week ago we got an interesting Zencart case. Being that we don’t often write about Zencart we figured it’d be good time to…

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Layer 7 DDOS – Blocking HTTP Flood Attacks

Daniel Cid

February 6, 2014

There are many types of Distributed Denial of Service (DDOS) attacks that can affect and bring down a website, and they vary in complexity and…

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Zero Day Vulnerability in OpenX Source 2.8.11 and Revive Adserver 3.0.1

David Dede

December 20, 2013

If you are using OpenX or the new Revive Adserver (fork of OpenX), you need to update it ASAP. Florian Sander discovered a serious SQL…

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Understanding Google’s Blacklist – Cleaning Your Hacked Website and Removing From Blacklist

Fioravante Souza

November 19, 2013

Today we found an interesting case where Google was blacklisting a client’s site but not sharing the reason why. The fact they were sharing very…

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Google Bots Doing SQL Injection Attacks

Daniel Cid

November 5, 2013

One of the things we have to be very sensitive about when writing rules for our CloudProxy Website Firewall is to never block any major…

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Security Education

Understanding Search Engine Warnings – Part I – Google – This Site May Be Hacked

Daniel Cid

October 29, 2013

If you have any questions about malware, blacklisting, or security in general, send them to us: contact@sucuri.net and we will answer here. For all the…

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Cleaning Up Your WordPress Site with the Free Sucuri Plugin

Daniel Cid

October 16, 2013

Update 9/9/16: We released a new guide to cleaning a hacked WordPress site with our plugin. If your site has been recently hacked and you…

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