John Klimarchuk

PSIRT Incident Manager
Security Research and Operations

John Klimarchuk, CISSP 20512 works as a PSIRT Incident Manager in the Security Research and Operations organization at Cisco. In this role, John investigates, drives to resolution and writes associated security advisories for any reported vulnerability affecting Cisco products.

John has over 15 years of experience working with information technology and cyber security. John has designed, implemented, and supported numerous secure networks from Fortune 500 to startup companies.

Prior to his current role, he supported several product’s in Cisco's Technical Assistance Center (TAC).

John Klimarchuk's Articles

Security
Advanced Malware Evasion Techniques HTTP-Evader
June 14, 2016 - 0 Comments

Malware doesn’t play by the rules, so today’s IT infrastructure needs to provide several layers of defense for end-users. Some of the more common devices used to protect modern networks
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Security
Linux Kernel Zero-Day Privilege Escalation Vulnerability CVE-2016-0728
January 29, 2016 - 3 Comments

On January 20, 2016, a new Linux Kernel zero-day vulnerability (CVE-2016-0728) was disclosed by Perception Point. The vulnerability has the potential to allow attackers to gain root on affected devices
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John Klimarchuk

John Klimarchuk's Articles

Advanced Malware Evasion Techniques HTTP-Evader

Linux Kernel Zero-Day Privilege Escalation Vulnerability CVE-2016-0728

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