4 papers
Directionality of the Voynich Script
Christophe Parisel
While the Voynich Manuscript was almost certainly written left-to-right (LTR), the question whether the underlying script or cipher reads LTR or right-to-left (RTL) has received li…
Quantifying Azure RBAC Wildcard Overreach
Christophe Parisel
Azure RBAC leverages wildcard permissions to simplify policy authoring, but this abstraction often obscures the actual set of allowed operations and undermines least-privilege guar…
A Geometry-Grounded Data Perimeter in Azure
Christophe Parisel
While data perimeter is ubiquitous in cybersecurity speak, it rarely defines how boundary points are arranged. In this paper we show how Azure s blast radius ultrametric provides t…
Scoring Azure permissions with metric spaces
Christophe Parisel
In this work, we introduce two complementary metrics for quantifying and scoring privilege risk in Microsoft Azure. In the Control Plane, we define the WAR distance, a superincreas…