Sucuri aims at keeping the internet safe. That is why we are so keen on informing our customers of potential threats. We have posted many articles regarding ecommerce security breaches that steal credit card information, as well as the risks for ecommerce site owners. There can be many dangers when purchasing through a website, and with More Info »
Massive localstorage[.]tk Drupal Infection
After a series of critical Drupal vulnerabilities disclosed this spring, it’s not surprising to see a surge of massive Drupal infections like this one: Massive #Drupal infection that redirects to “Tech Support” scam via “js.localstorage[.]tk” https://t.co/30ZeLIyfza pic.twitter.com/ZCPMepM74k — Denis (@unmaskparasites) April 24, 2018 … with over a thousand compromised sites that redirect visitors to “Tech More Info »
A Puzzling Backdoor Upload
After a successful compromise, backdoors are frequently left behind and function as a point of re-entry into the website environment. These malicious pieces of code are a valuable tool for attackers and allow them to bypass any existing access controls into the web server environment. To demonstrate just how common this malware is, in 2017 More Info »
PCI for SMB: Requirement 3 & 4 – Secure Cardholder Data
This is the third post in a series of articles on understanding the Payment Card Industry Data Security Standard – PCI DSS. We want to show how PCI DSS affects small, medium, and large businesses that are going through the compliance process using the PCI SAQ’s (Self Assessment Questionnaires). In the previous articles we have More Info »
Analysis of a Malicious Blackhat SEO Script
An enormous number of SEO spam infections are handled by us here at Sucuri. In our most recent hacked website trend report, we analyzed over 34,000+ websites and identified that 44% of all website infection cases were misused for SEO spam campaigns. Once a website has been compromised, attackers often use it to distribute malware, More Info »
Steps to Keep Your Site Clean: Updates
This is the second post of a series about Steps to Keep Your Site Clean. In the first post, we talked about Access Points; here we are going to offer more insight on Updates. Updates Repeatedly we see websites being infected or reinfected when important security updates are not taken seriously. Most software updates are created More Info »
From Baidu to Google’s Open Redirects
Last week, we described how an ongoing massive malware campaign began using Baidu search result links to redirect people to various ad and scam pages. It didn’t last long. Soon after the publication of that article, the bad actors changed the links to use compromised third-party sites and a couple of day later they began More Info »
Malicious Activities with Google Tag Manager
If I were to ask if you could trust a script from Google that is loading on your website, the majority of users would say “yes” or even “absolutely”. But when malicious behavior ensues, everything should be double-checked and suspected, even assets that come from “trusted sources” like Google, Facebook, and Youtube. In the past, More Info »
Content Security Policy
As a website owner, it’s a good idea to be aware of the security issues that might affect your site. For example, Cross-site Scripting (XSS) attacks consist of injecting malicious client-side scripts into a website and using the website as a propagation method. You probably know too that client-side scripts can be programmed to do More Info »
Unwanted Ads via Baidu Links
The malware attack that began as an installation of malicious Injectbody/Injectscr WordPress plugins back in February has evolved since then. Some of the changes were documented asUpdates at the bottom of the original blog post, however, every week we see minor modifications in the way they obfuscate the scripts or the files they inject them into. More Info »
