Microsoft Sentinel: Your SIEM,
Fully Realised.
Sentinel is only as powerful as the team that architects, tunes, and operates it. SourceMash delivers end-to-end Sentinel services from day-zero architecture through managed SOC operations so your Microsoft SIEM investment produces the detection coverage, analyst efficiency, and compliance reporting it was designed to provide.
Why Microsoft Sentinel
The Cloud-Native SIEM Built for Microsoft-First Enterprises
If your organisation runs Microsoft 365, Azure AD, and Defender Sentinel is not just a strong SIEM choice, it is the architecturally correct one. Here is why enterprises move to it, and why the move delivers ROI only when deployed and operated correctly.
Elastic, Consumption-Based Scaling
No hardware, no capacity planning. Sentinel scales from 10GB to 10TB per day of ingestion without infrastructure changes paying only for what you ingest and scaling instantly during major incident investigations that demand high-volume forensic collection.
300+ Native & Partner Data Connectors
First-class, zero-configuration connectors for the entire Microsoft security portfolio Defender XDR, Entra ID, Defender for Cloud, Purview, Intune plus 300+ certified partner connectors covering every major security platform already deployed in your organisation.
UEBA & AI-Powered Anomaly Detection
Built-in User and Entity Behaviour Analytics applies machine learning to your environment's baseline to surface insider threats, compromised accounts, and lateral movement that static rule-based detection consistently misses without requiring custom model development.
Native SOAR with Logic Apps
Sentinel's orchestration engine triggers Logic App playbooks automatically on any incident enabling sub-minute automated containment (account suspension, firewall block, endpoint isolation) without analyst intervention on validated high-confidence alerts.
Compliance Workbooks Out of the Box
Pre-built compliance workbooks for NIST, SOC 2, ISO 27001, HIPAA, PCI-DSS, CIS, and CMMC map your log coverage and control posture directly to regulatory frameworks turning audit preparation from a weeks-long exercise into a matter of hours.
Unified Investigation Graph
Sentinel's investigation graph visualises entity relationships, attack timelines, and lateral movement paths in a single view giving analysts the complete picture of an attack chain without pivoting across multiple tools to reconstruct what happened.
What We Deliver
End-to-End Sentinel Services
Six practice areas covering everything your organisation needs to get maximum detection coverage, operational efficiency, and cost control from Microsoft Sentinel at every stage of deployment maturity.
Architecture & Deployment
Greenfield and brownfield Sentinel deployment covering Log Analytics workspace design, data retention strategy, RBAC design, multi-tenant and multi-workspace architecture for MSSPs, Azure Lighthouse configuration, private endpoint setup, and Terraform/Bicep infrastructure-as-code for full deployment repeatability and version control.
Data Connector Onboarding
Systematic onboarding of all log sources configuring native Microsoft connectors, deploying CEF/Syslog collectors for network appliances, building custom REST API connectors for SaaS platforms, configuring Azure Monitor Agent data collection rules, and validating data quality, completeness, and ingestion latency across every source before production handover.
KQL Analytics Rule Development
Custom KQL analytics rule authoring, tuning, and lifecycle management building detection logic tailored to your environment, threat model, and regulatory requirements. We maintain a detection-as-code pipeline that converts threat intelligence, hunt findings, and incident post-mortems into version-controlled detection content that evolves with your environment.
SOAR Playbook Engineering
End-to-end Logic Apps playbook development for automated incident response alert triage, entity enrichment (IP reputation, user risk, device compliance), automated containment (account disable, endpoint isolation, firewall block), and bidirectional ITSM integration with ServiceNow, Jira, and Azure DevOps for complete incident lifecycle management.
Workbook & Dashboard Development
Custom Azure Workbook development for SOC operations, executive reporting, and compliance monitoring building interactive dashboards that surface the metrics that matter most. Compliance workbooks mapped to NIST CSF, ISO 27001, SOC 2, HIPAA, and PCI-DSS translate Sentinel data directly into the evidence format regulators and auditors expect.
Managed Sentinel SOC Operations
Fully managed 24/7 Sentinel operations with a dedicated team of certified analysts monitoring your workspace around the clock triaging every incident, investigating anomalies, executing containment actions, and producing weekly and monthly reporting. Includes ongoing rule tuning, connector maintenance, and quarterly workspace cost optimisation reviews.
Data Connector Ecosystem
We configure and manage Sentinel connectors across the full enterprise technology stack from Microsoft-native sources to third-party security platforms and custom SaaS via REST API.
Analytics & Detection Engineering
Detection Rules Built for Your Threat Model
Sentinel's out-of-the-box templates are a starting point not a complete detection programme. We build, tune, and maintain a custom KQL detection library tailored to your environment, your industry, and the specific adversary groups that target organisations like yours.
Impossible Travel Entra ID Sign-In Velocity
Mass Mailbox Forwarding Rule Created by Non-Admin
Azure AD App Privileged API Permission Grant
Excessive Failed MFA Prompts Potential MFA Fatigue Attack
SharePoint Bulk Download Exceeding Behaviour Baseline
New Global Admin Assigned Outside Approved Change Window
Trusted Microsoft Sentinel SIEM Specialists.
Our operational teams are composed of certified process consultants with advanced credentials from globally recognized frameworks. Leveraging Microsoft Sentinel, we ensure robust threat visibility, streamlined incident response, and strict adherence to enterprise security best practices.
Latest from SourceMash
Perspectives, research, and practical guidance from our enterprise technology experts.
What Organisations Say About Our Sentinel Work
SourceMash deployed Sentinel across our hybrid OT/IT environment in eight weeks on time, under budget, and with detection coverage our previous SIEM never came close to providing. The custom KQL rules for OT-specific scenarios caught two suspicious lateral movement events in the first month alone.
We moved from QRadar to Sentinel expecting a painful migration. SourceMash made it genuinely seamless zero detection gap during the cutover, a 38% reduction in our total SIEM cost, and a detection library measurably better than what we had before. Their cost optimisation work alone paid for the engagement in the first quarter.
The SOAR playbooks SourceMash engineered have completely transformed our SOC's operating model. Analysts now spend time investigating verified threats instead of triaging noise. Auto-containment for compromised accounts alone has saved us hundreds of analyst hours and reduced our mean containment time from hours to under two minutes.