Tag Archives: javascript

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Earlier this year, we faced a growing volume of infections related to a vulnerability in outdated versions of the Newspaper and Newsmag themes.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 More Info »

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;”> When we opened the URL in a browser, the page was blank. After checking the HTML source code, More Info »

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

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 April that described the cloudflare.solutions malware, which came along with the cryptominers. More Info »

Introducing Cloudflare Workers: Run Javascript Service Workers at the Edge

TL;DR: You’ll soon be able to deploy Javascript to Cloudflare’s edge, written against an API similar to Service Workers. Try writing a Worker in the playground » Introduction Every technology, when sufficiently complicated, becomes programmable. You see this everywhere, but as a lifelong gamer, my personal favorite example is probably graphics cards. In the ’90s, More Info »

Stored Cross-Site Scripting Vulnerability in WordPress 4.8.1

During regular research audits for our Sucuri Firewall (WAF), we discovered a source-based stored Cross-Site Scripting (XSS) vulnerability affecting WordPress 4.8.1. Are You at Risk? The vulnerability requires an account on the victim’s site with the Contributor role – or any account in a WordPress installation with bbPress plugin, as long as it has posting More Info »

Hacked Websites Mine Cryptocurrencies

Cryptocurrencies are all the rage now. Bitcoin, altcoins, blockchain, ICO, mining farms, skyrocketing exchange rates – you see or hear this everyday in news now. Everyone seems to be trying to jump on this bandwagon. This trend resulted in emergence of online platforms that allow webmasters to install coin miners into their websites as an More Info »

Spotting a Hidden SEO Hack: “Play One”

SEO hacks continue to plague websites as attackers abuse SERP rankings for their own gain. The time and effort spent by the website owner creating content, optimizing pages and building links is stolen by an attacker in an instant. For many years, spam injections placed inside legitimate pages have remained one of the most prevalent More Info »