Defensive & Managed SOC
SIEM & Detection Engineering
A SIEM is only as good as its detections. We design, deploy and tune SIEM/XDR platforms, engineer high-fidelity detection rules mapped to MITRE ATT&CK, and cut alert fatigue so your team focuses on what matters.
Typical timeline
Ongoing
Engagement model
Co-managed or fully managed
How it runs
Onboard → monitor → respond → improve
Overview
A SIEM platform is often the most expensive component of a security stack, yet many organizations get little value from it due to incomplete log sources, excessive noise, and outdated detection rules. True threat visibility requires a custom-engineered SIEM aligned to your unique environment.
Our SIEM and detection engineering services design, deploy, and optimize SIEM platforms (such as Splunk, Sentinel, or ELK). We onboard critical log sources, build normalized data models, write high-fidelity detection rules mapped to MITRE ATT&CK, and aggressively tune out false positives to combat alert fatigue.
At a glance
- SIEM/XDR architecture and deployment
- Log source onboarding and normalization
- ATT&CK-mapped detection content
- Alert tuning and use-case management
Coverage
What we cover
SIEM Architecture & Design
Sizing, design, and deployment of cloud-native or hybrid SIEM architectures.
Log Source Onboarding
Connecting telemetry from firewalls, identity providers, endpoints, and cloud logs.
Data Normalization & Parser tuning
Writing custom parsers and mappings to align log sources with standard data models.
Detection Rule Engineering
Writing custom SQL, KQL, or Splunk SPL rules targeting specific attacker techniques.
Alert Tuning & De-noising
Analyzing alert logs to identify and filter out benign system activity and noise.
SOAR Playbook Development
Automating initial triage and containment actions using custom API playbooks.
Outcomes
What you get
Methodology
How the engagement runs
Assess
Review log sources, use cases and gaps.
Engineer
Build and map detections to ATT&CK.
Tune
Reduce false positives and prioritize.
Operate
Hand over or run it as a managed service.
Deliverables
What lands in your inbox
- SIEM/XDR deployment
- Detection rule library
- Use-case catalogue
- Tuning documentation
Why A5
Why teams pick us
Detections that matter
High-fidelity, ATT&CK-mapped rules tuned to cut alert fatigue - signal over noise.
Humans in the loop
Real analysts triage, hunt and respond - not just an automated dashboard.
Built for Indian regulators
Coverage aligned to SEBI CSCRF M-SOC, RBI and CERT-In reporting timelines.
Transparent by default
You see what we see - live posture, incidents and trends, every month.
FAQ
Frequently asked
Which SIEM platforms?
We work across major SIEM/XDR platforms and can recommend one based on your scale, budget and data sources.
Related services
Defensive & Managed SOC
MDR & Managed SOC
24/7 managed detection & response and SOC-as-a-service with alert triage, hunting and response.
Defensive & Managed SOC
Threat Hunting
Hypothesis-driven, ATT&CK-aligned hunting for attackers that evaded automated detection.
Defensive & Managed SOC
Incident Response & Retainer
Emergency incident response and retainers: contain, eradicate, recover and report (CERT-In aligned).
Need siem & detection engineering?
Prove both before launch.
Bring us your app, audit deadline, or security concern. We'll map the fastest path to WCAG conformance, VAPT coverage, and regulator-ready evidence.
