Reflected XSS in WordPress v5.5.1 and Lower

WordPress released version 5.5.2 yesterday, which fixed a reflected XSS vulnerability we reported earlier this year. The root cause of this issue is a bug in the way WordPress determines a user’s current page, and which may cause a few other problems as well. Are You Affected? This vulnerability is exploitable on every WordPress site... Read More

Bridging the Gap Between Application and Network Security with CleanBrowsing

When we started Sucuri we set out to make enterprise security accessible, affordable, and effective for every day webmasters. It was at a time when open-source platforms like WordPress, Joomla!, Drupal, and others were changing the web landscape. With them came an entirely new generation of administrators who had no idea that they were now... Read More

5 Places Where You’d Never Expect to Get Hacked

For every gleaming new IoT device that hits the market, a hacker somewhere is figuring out how to compromise it. Today, even routine activities can land you in the sights of a bad actor. Imagine what a bad day could look like in these days of ubiquitous connectivity… it’d play like some dystopian grindhouse film.... Read More

Trump Campaign Site Hacked – What We Know & Lessons Learned

On October 27, 2020 at approximately 4:50pm Mountain Time, Donald Trump’s campaign website,, was defaced. The attackers left a message claiming they had compromising information on President Trump. The defacement page contained two Monero cryptocurrency wallet IDs encouraging visitors to “vote” by sending cryptocurrency to the wallets, indicating that if the first wallet received... Read More

Introducing Wordfence Central Teams

Last year, we introduced Wordfence Central and today thousands of WordPress site owners are using this free tool to manage their WordPress sites. Whether you’re using Wordfence Premium or still on the free plugin, Wordfence Central makes it possible for you to manage your sites’ security settings, tune your security alerts, and quickly assess security... Read More

P.A.S. Fork v. 1.0 — A Web Shell Revival

A PHP shell containing multiple functions can easily consist of thousands of lines of code, so it’s no surprise that attackers often reuse the code from some of the most popular PHP web shells, like WSO or b374k. After all, if these popular (and readily available) PHP web shells do the job, there’s no need... Read More

Episode 92: WordPress Forced Security Autoupdate Protects Sites from Loginizer Vulnerability

An easily exploitable SQL injection vulnerability was discovered in the Loginizer plugin installed on over one million WordPress sites, causing the WordPress team to force an update to sites using the vulnerable version. The Justice Department is filing antitrust suit against Google for allegedly monopolizing search and search advertising markets. Google Chrome gets an update... Read More

Password Security & Password Managers

In the spirit of National Cyber Security Awareness Month (NCSAM), let’s talk about a security basic that many people overlook: passwords. These are one of the most fundamental aspects of website security, yet we too often see webmasters taking a lax approach to secure passwords. In fact, the online security provider TeamPassword found that last... Read More

R_Evil WordPress Hacktool & Malicious JavaScript Injections

We often see hackers reusing the same malware, with only a few new adjustments to obfuscate the code so that it is more difficult for scanning tools to detect. However, sometimes entirely new attack tools are created and deployed by threat actors who don’t want to rely on obfuscating existing malware. Confusing Name – R_Evil... Read More
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