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Global Bank SIEM Modernization and AI Detection

About the Client

The client is a Tier-1 global bank processing more than 2 billion security events daily across distributed banking, payment, and customer systems. Its legacy QRadar SIEM environment, in place for over 15 years, struggled to keep pace with growing security demands, resulting in alert fatigue, delayed investigations, and operational inefficiencies. To modernize its cybersecurity operations and improve threat detection accuracy, the bank partnered with Zymr.

Key Outcomes

87% Reduction in False Positive Alerts
MTTD Reduced from 72 Hours to 3 Hours

Business Challenges

The bank’s legacy SIEM infrastructure generated an extremely high volume of alerts with nearly 90% identified as false positives. Security analysts spent significant time investigating low-priority events, delaying response to genuine threats and increasing operational overhead.

The existing QRadar environment lacked scalability to efficiently process growing event volumes generated across cloud platforms, digital banking systems, APIs, and endpoint environments. Detection logic was heavily rule-based, limiting the ability to identify sophisticated behavioral anomalies and advanced attack patterns.

Incident response processes were also highly manual. Tier-1 analysts relied on repetitive workflows for triage, enrichment, and escalation activities, resulting in slow Mean Time to Detect (MTTD) and inconsistent remediation processes.

Additionally, the bank needed stronger alignment with MITRE ATT&CK frameworks and modern SOC practices to improve threat visibility, detection coverage, and regulatory readiness across global operations.

The organization required a scalable, AI-driven SIEM modernization strategy capable of reducing alert fatigue, improving threat detection accuracy, and automating security operations workflows.

Business Impacts / Key Results Achieved

Zymr modernized the bank’s security operations ecosystem by migrating from its legacy SIEM platform to a scalable Elastic Security environment integrated with AI-driven detection and SOAR automation capabilities.

  • 87% Reduction in False Positive Alerts
  • MTTD Reduced from 72 Hours to 3 Hours
  • 82% of Tier-1 Security Responses Automated
  • Improved Threat Visibility Across Hybrid Infrastructure
  • Expanded MITRE ATT&CK Detection Coverage
  • Faster Incident Investigation and Remediation Workflows

Strategy and Solutions

Zymr implemented a modern SIEM and AI-driven security operations platform designed to improve detection accuracy, scalability, and automated incident response.

  • Elastic Security Migration
    Migrated legacy QRadar workloads and log pipelines to Elastic Security for improved scalability and performance.
  • MITRE-Aligned Detection Engineering
    Developed custom detection rules aligned with MITRE ATT&CK techniques to strengthen threat coverage and visibility.
  • Machine Learning Behavioral Analytics
    Implemented ML-based behavioral baselines to identify anomalous user, endpoint, and network activity patterns.
  • Cortex XSOAR Automation
    Automated tier-1 SOC workflows including alert triage, enrichment, containment, and escalation processes.
  • Threat Intelligence Integration
    Integrated external and internal threat intelligence feeds to improve contextual threat detection and prioritization.
  • SOC Workflow Optimization
    Streamlined analyst workflows and dashboards to reduce investigation time and improve operational efficiency.
  • Hybrid Infrastructure Monitoring
    Enabled centralized visibility across cloud, on-premise, endpoint, and banking application environments.
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