Blog

Enhancing Azure Policies for Log Collection

Azure Policies are an excellent tool for standardizing and scaling your environment within Azure. They can be used to configure log collection from Azure resources to Microsoft Sentinel. While you can manually set up log …

Advanced DCR Scenarios - For SIEM migration

DCRs and their ingestion-time transformations have been around for quite a while. They are commonly used in modern Sentinel deployments, but I’ve utilized several specific configurations that are particularly …

Sentinel Phantom Fields: Understanding and Managing Inaccessible Data

Read the blog post on BlueVoyant’s site: Sentinel Phantom Fields: Understanding and Managing Inaccessible Data. Microsoft has transitioned to a DCR-based log ingestion and manual schema management for tables for …

Saving cost through parsing

When selecting a new security technology, cost is a crucial factor. It does not matter how effective a tool may be, it becomes irrelevant if it’s unaffordable for you. As a result, it is critical to have someone …

Defender for Cloud Sentinel connectors review

A slightly different version of this article appeared on BlueVoyant’s website. Click on this link to read it there: https://www.managedsentinel.com/defender-for-cloud-and-defender-xdr-connectors-in-sentinel/ Alternately, …

The cost of a watchlist

Sentinel’s watchlist is a collection of entities that can be used to correlate your logs with a rarely changing data set. Although watchlists can be updated via the Azure Portal GUI or even its API, watchlists are …

Log splitting with Data Collection Rules

The initial release of this article appeared on BlueVoyant’s website. Click on this link to read it there, along with some lovely diagrams: https://www.managedsentinel.com/log-splitting-with-data-collection-rules/ …

Ingestion delay variance issues with Bins and Buckets

I’m pretty sure you’ve already dealt with the ingestion delay issue if you use a SIEM with scheduled rules. There are numerous articles on the internet that explain how to handle ingestion latency without …

How to stop cross-tenant log forwarding? (you cannot)

You may want to forward Azure resource logs to a different tenant from time to time. Fortunately, using the Diagnostic settings option in Azure to forward -at least some of the- logs to another tenant is quite simple. I …