Gerben Kleijn

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Meet the Author

Gerben Kleijn Managing Security Consultant

Gerben Kleijn (OSWE, CISSP) is a Managing Security Consultant for Bishop Fox, where he oversees a team of penetration testers. His focus areas include cloud penetration tests, external network penetration tests, and web application assessments as well as cloud deployment reviews for Amazon Web Services (AWS). He has advised Fortune 500 brands and startups in industries such as media, retail, and software in addition to popular websites, credit reporting agencies, and marketing platforms.

Subject Matter Expertise:

AWS
Network security
Monitoring
Firewall/Host/VPN review
Threat intel

Posts from Gerben Kleijn

Jun 07, 2022

Using CloudTrail to Pivot to AWS Accounts

Dec 01, 2020

OpenClinic Version 0.8.2 Advisory

Dec 19, 2019

Escalator to the Cloud: 5 Privesc Attack Vectors in AWS

Dec 19, 2019

Well, That Escalated Quickly: Privilege Escalation in AWS

Oct 28, 2019

Glossary of Relevant AWS Terms

Aug 28, 2018

An Introduction to AWS Cloud Security

Jul 10, 2018

A Guide to AWS S3 Buckets Security

Nov 14, 2017

Stand Your Cloud #3: AWS Provisioning and Access Requests

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