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THE DAILY INDEX

Technology, AI, software, security, crypto and business

ATTACKS & VULNERABILITIES

TLDR InfoSec

INTRODUCTION TO DETECTION ENGINEERING WITH SIGMA

Sigma provides a backend-neutral detection signature language for logs that can be converted to a variety of different query languages such as Splunk SPL or Sentinel KQL. This post walks through a Sigma rule to explain the components and syntax. It then introduces some more advanced features such as pipelines to resolve mapping issues between rules and data sources and correlation rules to provide stateful detections.

DATA SAFETY LEVELS FRAMEWORK: THE FOUNDATION OF HOW WE LOOK AT DATA IN BLOCK

Cash App's security team devised a Data Safety Levels (DSL) Framework based on the CDC's biosafety levels to utilize for data classification. The framework takes a dataset level approach to devise standardized rubrics for evaluating data based on its usage such as Consumer Personal Data and Payment Card Data. The framework couples with automation to be able to classify data as part of Block teams' regular workflows as well as guidelines on how to handle data of various sensitivity levels.

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