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# Nadav Markus

Linux security research manager

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Blogs by Nadav Markus  
Sort By: Recent  
Recent Popular

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[![CVE-2022-26134 Seen in the Wild by Cortex XDR](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/06/In-All-Seriousness.jpg)](https://www2.paloaltonetworks.com/blog/security-operations/cve-2022-26134-seen-in-the-wild-by-cortex-xdr/)

## [Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown), [Use-Cases](https://www.paloaltonetworks.com/blog/security-operations/category/use-cases/?ts=markdown)

### [CVE-2022-26134 Seen in the Wild by Cortex XDR](https://www2.paloaltonetworks.com/blog/security-operations/cve-2022-26134-seen-in-the-wild-by-cortex-xdr/)

Nowadays, more and more Java vulnerabilities are being discovered. Exploiting these vulnerabilities can devastate a server, often resulting in remote code execution (RCE) and data leaks. And, since most Java vulnerabilities are ...  
Jun 22, 2022  
By [Efi Barkayev](https://www.paloaltonetworks.com/blog/author/efi-barkayev/?ts=markdown "Posts by Efi Barkayev") and [Nadav Markus](https://www.paloaltonetworks.com/blog/author/nadav-markus/?ts=markdown "Posts by Nadav Markus")

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[![CVE-2021-26084 Linux Exploitation in the Wild](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2021/09/Coding-1.jpg)](https://www2.paloaltonetworks.com/blog/security-operations/cve-2021-26084-linux-exploitation-in-the-wild/)

## [Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown), [News and Events](https://www.paloaltonetworks.com/blog/security-operations/category/news-and-events/?ts=markdown)

### [CVE-2021-26084 Linux Exploitation in the Wild](https://www2.paloaltonetworks.com/blog/security-operations/cve-2021-26084-linux-exploitation-in-the-wild/)

Attackers are actively exploiting CVE-2021-26084 Atlassian Confluence vulnerabilities in the wild. Read this blog to view the exact exploit attempts that were detected and blocked by Cortex XDR and learn how many government and educational institutions are exposed to this attack.  
Sep 24, 2021  
By [Nadav Markus](https://www.paloaltonetworks.com/blog/author/nadav-markus/?ts=markdown "Posts by Nadav Markus") and [Abhishek Anbazhagan](https://www.paloaltonetworks.com/blog/author/abhishek-anbazhagan/?ts=markdown "Posts by Abhishek Anbazhagan")

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[](https://www2.paloaltonetworks.com/blog/2016/05/how-cve-2015-7547-glibc-getaddrinfo-can-bypass-aslr/)

## [Endpoint](https://www.paloaltonetworks.com/blog/category/endpoint-2/?ts=markdown)

### [How CVE-2015-7547 (GLIBC getaddrinfo) Can Bypass ASLR](https://www2.paloaltonetworks.com/blog/2016/05/how-cve-2015-7547-glibc-getaddrinfo-can-bypass-aslr/)

Introduction On February 16, 2016 Google described a critical vulnerability in GLIBC's getaddrinfo function. They provided a crash PoC, and so the task of producing a reliable exploit began. In this post, ...  
May 27, 2016  
By [Gal De Leon](https://www.paloaltonetworks.com/blog/author/gal-de-leon/?ts=markdown "Posts by Gal De Leon") and [Nadav Markus](https://www.paloaltonetworks.com/blog/author/nadav-markus/?ts=markdown "Posts by Nadav Markus")

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[](https://www2.paloaltonetworks.com/blog/2015/01/cve-2014-7911-deep-dive-analysis-android-system-service-vulnerability-exploitation/)

## [Malware](https://www.paloaltonetworks.com/blog/category/malware-2/?ts=markdown), [Mobility](https://www.paloaltonetworks.com/blog/category/mobility/?ts=markdown), [Threat Prevention](https://www.paloaltonetworks.com/blog/category/threat-prevention-2/?ts=markdown)

### [CVE-2014-7911 -- A Deep Dive Analysis of Android System Service Vulnerabilit...](https://www2.paloaltonetworks.com/blog/2015/01/cve-2014-7911-deep-dive-analysis-android-system-service-vulnerability-exploitation/)

In this post we discuss CVE-2014-7911 and the various techniques that can be used to achieve privilege escalation. We also examine how some of these techniques can be blocked using several security ...  
Jan 06, 2015  
By [Yaron Lavi](https://www.paloaltonetworks.com/blog/author/yaron-lavi/?ts=markdown "Posts by Yaron Lavi") and [Nadav Markus](https://www.paloaltonetworks.com/blog/author/nadav-markus/?ts=markdown "Posts by Nadav Markus")

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Blogs by Nadav Markus  
Sort By: Popular  
Popular Recent

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[](https://www2.paloaltonetworks.com/blog/2015/01/cve-2014-7911-deep-dive-analysis-android-system-service-vulnerability-exploitation/)

## [Malware](https://www.paloaltonetworks.com/blog/category/malware-2/?ts=markdown), [Mobility](https://www.paloaltonetworks.com/blog/category/mobility/?ts=markdown), [Threat Prevention](https://www.paloaltonetworks.com/blog/category/threat-prevention-2/?ts=markdown)

### [CVE-2014-7911 -- A Deep Dive Analysis of Android System Service Vulnerabilit...](https://www2.paloaltonetworks.com/blog/2015/01/cve-2014-7911-deep-dive-analysis-android-system-service-vulnerability-exploitation/)

In this post we discuss CVE-2014-7911 and the various techniques that can be used to achieve privilege escalation. We also examine how some of these techniques can be blocked using several security ...  
Jan 06, 2015  
By [Yaron Lavi](https://www.paloaltonetworks.com/blog/author/yaron-lavi/?ts=markdown "Posts by Yaron Lavi") and [Nadav Markus](https://www.paloaltonetworks.com/blog/author/nadav-markus/?ts=markdown "Posts by Nadav Markus")

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[](https://www2.paloaltonetworks.com/blog/2016/05/how-cve-2015-7547-glibc-getaddrinfo-can-bypass-aslr/)

## [Endpoint](https://www.paloaltonetworks.com/blog/category/endpoint-2/?ts=markdown)

### [How CVE-2015-7547 (GLIBC getaddrinfo) Can Bypass ASLR](https://www2.paloaltonetworks.com/blog/2016/05/how-cve-2015-7547-glibc-getaddrinfo-can-bypass-aslr/)

Introduction On February 16, 2016 Google described a critical vulnerability in GLIBC's getaddrinfo function. They provided a crash PoC, and so the task of producing a reliable exploit began. In this post, ...  
May 27, 2016  
By [Gal De Leon](https://www.paloaltonetworks.com/blog/author/gal-de-leon/?ts=markdown "Posts by Gal De Leon") and [Nadav Markus](https://www.paloaltonetworks.com/blog/author/nadav-markus/?ts=markdown "Posts by Nadav Markus")

*** ** * ** ***

[![CVE-2022-26134 Seen in the Wild by Cortex XDR](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/06/In-All-Seriousness.jpg)](https://www2.paloaltonetworks.com/blog/security-operations/cve-2022-26134-seen-in-the-wild-by-cortex-xdr/)

## [Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown), [Use-Cases](https://www.paloaltonetworks.com/blog/security-operations/category/use-cases/?ts=markdown)

### [CVE-2022-26134 Seen in the Wild by Cortex XDR](https://www2.paloaltonetworks.com/blog/security-operations/cve-2022-26134-seen-in-the-wild-by-cortex-xdr/)

Nowadays, more and more Java vulnerabilities are being discovered. Exploiting these vulnerabilities can devastate a server, often resulting in remote code execution (RCE) and data leaks. And, since most Java vulnerabilities are ...  
Jun 22, 2022  
By [Efi Barkayev](https://www.paloaltonetworks.com/blog/author/efi-barkayev/?ts=markdown "Posts by Efi Barkayev") and [Nadav Markus](https://www.paloaltonetworks.com/blog/author/nadav-markus/?ts=markdown "Posts by Nadav Markus")

*** ** * ** ***

[![CVE-2021-26084 Linux Exploitation in the Wild](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2021/09/Coding-1.jpg)](https://www2.paloaltonetworks.com/blog/security-operations/cve-2021-26084-linux-exploitation-in-the-wild/)

## [Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown), [News and Events](https://www.paloaltonetworks.com/blog/security-operations/category/news-and-events/?ts=markdown)

### [CVE-2021-26084 Linux Exploitation in the Wild](https://www2.paloaltonetworks.com/blog/security-operations/cve-2021-26084-linux-exploitation-in-the-wild/)

Attackers are actively exploiting CVE-2021-26084 Atlassian Confluence vulnerabilities in the wild. Read this blog to view the exact exploit attempts that were detected and blocked by Cortex XDR and learn how many government and educational institutions are exposed to this attack.  
Sep 24, 2021  
By [Nadav Markus](https://www.paloaltonetworks.com/blog/author/nadav-markus/?ts=markdown "Posts by Nadav Markus") and [Abhishek Anbazhagan](https://www.paloaltonetworks.com/blog/author/abhishek-anbazhagan/?ts=markdown "Posts by Abhishek Anbazhagan")

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