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Credit Card Skimmer and Backdoor on WordPress E-commerce Site

Puja Srivastava
March 14, 2025

The battle against e-commerce malware continues to intensify, with attackers deploying increasingly sophisticated tactics. In a recent case at Sucuri, a customer reported suspicious files…

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Hidden Backdoors Uncovered in WordPress Malware Investigation

Puja Srivastava
February 14, 2025

At Sucuri, we often encounter cases where malware is deeply embedded in websites, hidden in files and scripts that can easily escape detection. In this…

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Backdoors: The Hidden Threat Lurking in Your Website

Kyle Knight
January 17, 2025

Website backdoors are a silent yet deadly threat to website security. These stealthy mechanisms bypass standard authentication, providing attackers with persistent, unauthorized access to a…

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PHP Reinfector and Backdoor Malware Targeting WordPress Sites

PHP Reinfector and Backdoor Malware Target WordPress Sites

Puja Srivastava
November 13, 2024

We recently observed a surge in WordPress websites being infected by a sophisticated PHP reinfector and backdoor malware. While we initially believed that the infection…

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Remote Code Execution Backdoor Uses Unicode Obfuscation and Non-Standard File Extensions

Remote Code Execution Backdoor Uses Unicode Obfuscation & Non-Standard File Extensions

Ben Martin
June 22, 2023

Readers of this blog will know that attackers are constantly finding new ways to hide their malware and avoid detection; after all, that’s what good…

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Konami Code Backdoor Concealed in front.jpeg Image

Konami Code Backdoor Concealed in Image

Ben Martin
February 2, 2023

Attackers are always looking for new ways to conceal their malware and evade detection, whether it’s through new forms of obfuscation, concatenation, or — in…

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Backdoor Targets FreePBX Asterisk Management Portal

Krasimir Konov
December 15, 2022

Written in PHP and JavaScript, FreePBX is a web-based open-source GUI that manages Asterisk, a voice over IP and telephony server. This open-source software allows…

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Wordfence Evasion Malware Conceals Backdoors

Ben Martin
October 20, 2022

Malware authors, with some notable exceptions, tend to design their malicious code to hide from sight. The techniques they use help their malware stay on…

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Examining Emerging Malware: Website Backdoors

Ben Martin
May 10, 2022

Next up in our “This didn’t quite make it into the 2021 Threat Report, but is still really cool” series: New and emerging backdoor variants…

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What are website backdoors Sucuri Security

What is a Website Backdoor?

Allison Bondi
November 18, 2021

What is a Backdoor? A backdoor provides a shortcut for authorized or unauthorized users to gain access to an unauthorized location of a website, software,…

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Examining Unique Magento Backdoors

Liam Smith
August 4, 2021

During a recent investigation into a compromised Magento ecommerce environment, we discovered the presence of five different backdoors that would provide attackers with code execution…

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