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Peter Gramantik

27 posts
Peter Gramantik is Sucuri’s Sr. Malware Researcher who joined the company in 2013. Peter’s main responsibilities include crafting signatures for new malware, and improving existing and researching new detection techniques. His professional experience covers 15 years of fighting malware. When Peter isn’t researching malware, you might find him doing technical and cave dives, riding his Harley Davidson, playing the guitar and singing in a band, or cooking BBQ for his family and friends. Connect with Peter on Twitter.
Anatomy of a credit card stealer
  • Security Education
  • Website Security

The Anatomy of Website Malware Part 2: Credit Card Stealers

  • Peter Gramantik
  • December 30, 2019
One of the biggest malicious trends in the last few months and years are credit card stealers — also commonly referred to as credit card…
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Anatomy of Malware: Introduction
  • Security Education
  • Website Security

The Anatomy of Website Malware: An Introduction

  • Peter Gramantik
  • February 7, 2019
We see a lot of files infected by website malware on a daily basis here at Sucuri Labs. What we don’t see is very many…
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Phishing Volkswagon Campaign
  • Security Education
  • Website Security

Fake Volkswagen Campaign Spreads Through Social Networks

  • Peter Gramantik
  • December 7, 2018
We recently investigated a suspicious link received by one of my colleagues on WhatsApp. The message (in Portuguese) states that Volkswagen is offering 20 free…
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  • Vulnerability Disclosure
  • Website Malware Infections
  • Website Security
  • WordPress Security

Outdated Duplicator Plugin RCE Abused

  • Peter Gramantik
  • September 14, 2018
We’re seeing an increase in the number of cases where attackers are disabling WordPress sites by removing or rewriting its wp-config.php file. These cases are all linked…
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Malicious variants
  • Security Education
  • Website Malware Infections
  • Website Security

Persistent Malicious Redirect Variants

  • Peter Gramantik
  • July 16, 2018
It’s always nice to meet an old friend or someone you used to know well. You have news to share and talk about, stories to…
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Obfuscation through legitimate appearances.
  • Website Security
  • WordPress Security

Obfuscation Through Legitimate Appearances

  • Peter Gramantik
  • April 4, 2018
Recently, I analyzed a malware sample provided by our analyst Edward C. Woelke and noticed that it had been placed in a core WordPress folder.…
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x-wp-spam-shield-pro malicious fake plugin
  • WordPress Security

Fake Plugins, Fake Security

  • Peter Gramantik
  • September 28, 2017
Update: The plugin name is fake and has nothing to do with the well-known WP-SpamShield plugin in the official WordPress plugin repository. WordPress users are…
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Labs Note
  • Sucuri Labs

Targeting mobile devices the easy way

  • Peter Gramantik
  • September 29, 2016
With the outburst of mobile-only malware, we’re seeing a lot of mobile-devices targeted campaigns in last years. There are lot of ways how to make…
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  • Security Education

Ask Sucuri: How Modern Web Phishing Works

  • Peter Gramantik
  • August 30, 2016
Most of us have experienced some kind of phishing attempt in our online lives, and we have seen phishing grow in complexity. Usually, we notice…
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  • Security Education

SEO Spam Technique Designed to Avoid Detection

  • Peter Gramantik
  • April 22, 2016
Ten years ago the internet looked very different than it does now. Today, web designers have more options and standards to make a website stand…
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  • Joomla Security
  • Website Malware Infections
  • Website Security

Return of the EXIF PHP Joomla Backdoor

  • Peter Gramantik
  • November 3, 2015
Our Remediation and Research teams are in constant communication and collaboration. It’s how we stay ahead of the latest threats, but it also presents an…
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