How Tata Power Maintained 100% Uptime During 860 Million Attacks

Key Security Challenges :

1. Hybrid and Evolving Digital LandscapeTata Power’s applications run across on-prem infrastructure and cloud, spanning both staging and production environments. The landscape includes a mix of legacy systems, modern architectures, and IOT services that continue to evolve. Maintaining consistent application-layer protection across this landscape became increasingly complex as scale and traffic volumes have grown.
2. Critical Enterprise Systems on Custom Ports Several important enterprise platforms, including SAP and third party systems, operate on non standard ports. Most WAAP solutions primarily support only HTTP and HTTPS traffic, which leaves gaps when services run outside these default ports. At Tata Power’s scale, any unprotected port directly increases the risk surface.
3.  Large-Scale, Adaptive DDoS AttacksAs digital adoption increased, Tata Power experienced recurring DDoS activity ranging from low volume probing to sudden, large-scale surges. These attacks were often designed to mimic legitimate user behavior, making it difficult to distinguish from normal traffic using traditional, threshold-based controls.
4. Alert Noise and Operational PressureWith multiple security controls already in place, the challenge was not a lack of data, but too much of it. Correlating alerts from internal firewalls, application traffic, and attack telemetry in real time was resource-intensive and difficult to sustain at scale efficiently.

Solution :

1. Fully Managed 24×7 Security OperationsIndusface’s managed SOC continuously monitors application traffic and applies core security policies and virtual patching to defend against both known and emerging application-layer vulnerabilities. AppTrana blocked 260+ open vulnerabilities across legacy and third-party systems at the WAF layer, virtually patching them through a combination of core and custom security policies. This approach reduced downtime risk caused by technical debt and saved Tata Power ₹48 lakh in patching effort, while providing continuous protection during extended remediation cycles, where code-level fixes for legacy and third-party components can take up to six months. By shielding business-critical systems throughout this window, Indusface helped Tata Power minimize exposure without forcing rushed changes or disrupting stable operations.In 2025, over 620 million attacks were blocked through finely tuned security policies for TATA Power’s application landscape.

   

   From Dec 2 to 27, attackers failed with DDoS attempts. When they switched to vulnerability exploits, Indusface combined AI detection with human SOC response to block the surge from Dec 28 to 31, preventing a serious breach with no business disruption.

   

2. Behavior-Based DDoS Mitigation with 100% Uptime SLAInstead of relying on static thresholds, Indusface leverages AI-ML models to understand normal traffic behavior and detect anomalies during attacks. This capability proved critical during large-scale DDoS incidents in August when traffic surged 400x above normal levels and once more in December 2025 when traffic surged over 600x the baseline.

   

   Using behavioral DDoS, malicious traffic was stopped without affecting legitimate users, eliminating the need for emergency manual intervention. Even during these large-scale attacks, Indusface ensured Tata Power maintained 100% uptime, keeping business operations uninterrupted.

3. Comprehensive Coverage Across All Exposed Ports Indusface extended WAAP protection across all exposed ports beyond HTTP and HTTPS, including those used by SAP, legacy platforms, and internal services. This ensures consistent application-layer security without requiring changes to existing application architecture or workflows.
4. Continuous API Discovery and ProtectionUsing AI-driven traffic analysis, Indusface continuously identified and protected over 2100 APIs, including undocumented and newly exposed endpoints. This ensured API security kept pace with ongoing application changes without manual inventory management.
5. Centralized Security LogsWith Security Information & Event Management (SIEM) enabled, the Tata Power team seamlessly integrates WAF-generated logs with their existing SIEM platforms, gaining centralized visibility into security events along with actionable alerts.
6. Securing IoT and Connected PlatformsIndusface also extended protection to Tata Power’s EZ Home IoT platforms. This reflects a futureready security posture that goes beyond traditional websites and applications to secure connected and emerging digital services.

Results

• 860.06 million application-layer attacks blocked across 60+ digital services
• 151.75 million DDoS attacks mitigated using behavior-based controls in 2025
• 2.4 million automated bot attacks blocked
• 100% uptime maintained across customer-facing & enterprise platforms during peak attack periods
• 270+ vulnerability exploits prevented (via a mix of core and custom rules) by Indusface, reducing exposure during patching cycles with no dev effort from Tata Power’s side
• ~₹94 lakhs saved in one year through reduced SOC operational effort
• ~₹6.65 crore in estimated breach risk avoided

Looking Ahead: Securing the Next Phase of Digital Growth :

As Tata Power’s digital ecosystem continues to evolve, the security focus is expanding to include AIdriven applications, automated workflows, and growing machine-to-machine interactions across platforms and infrastructure.

Indusface is supporting this next phase through AI-Shield, which extends protection to AI-enabled applications and APIs, strengthens coverage for IoT and smart infrastructure services, and utilizes advanced behavioral analysis to detect AI-driven and automated attack patterns.

Through its ongoing partnership with Indusface, Tata Power has established a resilient and scalable application security model that strengthens protection without adding operational friction. This approach enables the organization to support both current operations and future innovation, while ensuring early risk detection, sustained availability, and uninterrupted digital services.