Compass Security Blog

Offensive Defense

Bug Bounty: Insights from Our First-hand Experience

At Compass Security, we recently launched our managed bug bounty service. We openly invite hunters to probe our publicly exposed services for vulnerabilities. In return for their valuable feedback, we offer monetary bounties up to CHF 5000. This blog posts presents an interesting vulnerability found by a hunter on the bug bounty program of our subsidiary, Hacking-Lab.

Continue reading

Evading Static Machine Learning Malware Detection Models – Part 1: The Black-Box Approach

Modern anti-malware products such as Windows Defender increasingly rely on the use of machine learning algorithms to detect and classify harmful malware. In this two-part series, we are going to investigate the robustness of a static machine learning malware detection model trained with the EMBER dataset. For this purpose we will working with the Jigsaw ransomware.

Continue reading

Bypassing Content-Security-Policy with DNS prefetching

Introduction The Content Security Policy (CSP) is one of the main web-based security mechanisms which helps websites’ owners to reduce their risks caused by Cross-Site-Scripting (XSS) or code injection attacks [1]. The CSP is nothing more than a policy that defines from where and to where a something can be loaded and fetched. This is […]

Continue reading