Breaking: Aggressive WordPress Brute Force Attack Campaign Started Today, 3am UTC

A massive distributed brute force attack campaign targeting WordPress sites started this morning at 3am Universal Time, 7pm Pacific Time. The attack is broad in that it uses a large number of attacking IPs, and is also deep in that each IP is generating a huge number of attacks. This is the most aggressive campaign... Read More

Javascript Injection Creates Rogue WordPress Admin User

Earlier this year, we faced a growing volume of infections related to a vulnerability in outdated versions of the Newspaper and Newsmag themes. The infection type was always the same: malicious JavaScript designed to display unauthorized pop-ups or completely redirect visitors to spammy websites, which the hackers then monetized through advertisement views. This month we... Read More

New Service Vulnerability Disclosure Policy

The Wordfence team regularly discovers security issues with commercial services, such as WordPress hosting providers, that put their users at risk. In some cases, the issue is quite severe, putting thousands of websites at risk simultaneously. In these instances, our standard approach has been to contact the service provider directly, provide them with the details... Read More

Malicious Cryptominers from GitHub

Recently, a webmaster contacted us when his AVG antivirus reported that the JS:Miner-C [Trj] infection was found on their site. Our investigation revealed a hidden iframe had been injected into the theme’s footer.php file: <iframe src=”hxxps://wpupdates.github[.]io/ping/” style=”width:0;heigh:0;border:none;”></iframe> When we opened the URL in a browser, the page was blank. After checking the HTML source code,... Read More

Cloudflare[.]Solutions Keylogger on Thousands of Infected WordPress Sites

Update Dec. 8 2017: The cloudflare[.]solutions domain has now been taken down. A few weeks ago, we wrote about a massive WordPress infection that injected an obfuscated script pretending to be jQuery and Google Analytics. In reality, this script loaded a CoinHive cryptocurrency miner from a third-party server. We also mentioned a post written back in... Read More

Formidable Forms / Shortcodes Ultimate Exploits In The Wild

On Monday, November 20th, we were notified about a vulnerability that poses a serious security risk when the Shortcodes Ultimate and Formidable Forms plugins are used together on a single WordPress installation. Over the past couple of weeks, we’ve noticed a large influx in the number of malicious requests testing for the presence of the... Read More

Risks For E-commerce Site Owners Through the Holidays

Shopping season is here, and with that, so is the opportunity for ecommerce site owners to grow their revenue and reputation. However, hackers are also busy infecting ecommerce websites with malware, such as: Credit Card Swipers Malicious Payment Gateways Malware Downloads Now is the time when attackers target those last-minute shoppers buying products online. Over... Read More

Vulnerabilities in Formidable Forms, Duplicator and Yoast SEO Plugins

Vulnerabilities have been reported in the Formidable Forms, Duplicator and Yoast SEO WordPress plugins. The Premium version of Wordfence protects against all of these vulnerabilities, even if you have not updated your plugins yet. We do recommend that you update immediately, whether or not you are using the Premium version of Wordfence. The details of... Read More

How to Avoid Malicious Cyber Monday Campaigns

As consumers prepare to take advantage of the discounts and promotions for the Black Friday and Cyber Monday ecommerce holidays, bad actors are crafting fraudulent websites, phishing, and malware campaigns to capitalize on the profits. In past years, targeted Cyber Monday phishing emails posed a huge risk to consumers. These emails, designed to appear from... Read More