Cybersecurity Services in Kolkata
Kolkata is India's eastern enterprise capital and the seat of the Reserve Bank of India's Eastern zone. The city anchors a regional ecosystem of BFSI, IT/ITES, steel, jute and tea exports, with most modern enterprise activity concentrated in Salt Lake Sector V and Rajarhat (New Town). We deliver India-based SOC monitoring, RBI-aligned BFSI controls and direct OEM escalation across the Kolkata enterprise belt.
Next-business-day on-site response in Salt Lake Sector V and Rajarhat
Control sets aligned to the RBI Cyber Security Framework (East zone)
24×7 India-based SOC with telemetry stored in Indian data centres
Cybersecurity Services Available in Kolkata
The full NexaSource portfolio is available to Kolkata customers - from architecture and deployment through 24×7 managed operations.
Network Security
Next-generation firewalls (Palo Alto PA-Series, Fortinet FortiGate, Cisco Secure Firewall), SD-WAN, SASE and segmentation projects.
Learn more →Endpoint Security & XDR
CrowdStrike Falcon, Palo Alto Cortex XDR, Microsoft Defender for Endpoint, FortiEDR - deployment, tuning and 24×7 managed detection.
Learn more →Cloud & Zero Trust
CSPM, CWPP, CIEM, ZTNA - securing AWS, Azure, GCP and hybrid environments. Phased zero-trust rollouts with measurable cut-over plans.
Learn more →Managed SOC / MDR
India-based SOC analysts monitoring your environment 24×7. Threat hunting, incident response, vendor coordination - telemetry stored in India.
Learn more →Compliance & Audits
ISO 27001, SOC 2, PCI DSS, RBI CSF, SEBI CSCRF, IRDAI, IFSCA, DPDP Act - gap assessments, control implementation and audit-readiness support.
Learn more →Incident Response
Active breach? Call our 24×7 hotline for immediate triage. Next-business-day on-site dispatch in Salt Lake Sector V and Rajarhat New Town through our East-India engineering pool - for containment, forensics and recovery.
Call hotline →Why Kolkata enterprises choose NexaSource
- Built for Salt Lake Sector V and Rajarhat: Sector V hosts the Indian operations of TCS, Cognizant, Wipro, Capgemini, IBM and a large concentration of mid-cap IT services firms. Rajarhat (New Town) is the next-generation IT zone for SaaS and BFSI back-office expansion.
- RBI East zone BFSI depth: We work with regional banking, NBFC and insurance customers on RBI Cyber Security Framework, IT Examination Manual evidence, and SEBI CSCRF alignment for Kolkata-listed brokers.
- Public-sector and steel-sector context: Tata Steel, SAIL and a long tail of central-public-sector undertakings have major Kolkata operations. We have specific approaches for PSU procurement, GeM-portal compliance and CERT-In incident reporting.
- Direct East-India OEM presence: Palo Alto, Fortinet, Cisco, Microsoft and CrowdStrike all maintain regional SE coverage. POCs and escalations move through regional channels.
- India data residency by default: All managed-service telemetry from Kolkata customers is stored in Indian data centres unless you explicitly request otherwise - important for RBI-regulated entities and PSU contracts.
Areas of Kolkata we cover on-site
Next-business-day on-site dispatch in Salt Lake Sector V and Rajarhat New Town through our East-India engineering pool.
- Salt Lake Sector V (Bidhannagar IT corridor)
- Rajarhat / New Town IT zones (DLF IT Park, Unitech Infospace)
- Park Street, Camac Street, Chowringhee (corporate HQs)
- Russell Street, AJC Bose Road financial belt
- Howrah industrial belt (manufacturing/OT)
- Behala, Kasba, Ballygunge (corporate offices)
- Durgapur and Asansol enterprise belt (extended coverage)
Industries we serve in Kolkata
BFSI and financial services
Bandhan Bank, UCO Bank, Allahabad Bank legacy operations, regional NBFCs and the broker-dealer ecosystem listed in Kolkata. RBI Cyber Security Framework alignment, IT Examination Manual evidence packaging, SEBI CSCRF for brokers.
IT services and ITES on Sector V
TCS, Cognizant, Wipro, Capgemini, IBM and a large concentration of mid-cap services firms. Common asks: SOC 2 Type II, multi-tenant isolation reviews, source-code DLP, third-party developer access governance.
Steel, jute and PSU contractors
Tata Steel, SAIL, Coal India and the long tail of PSU contractor ecosystem. PSU procurement security clauses, GeM-portal compliance, OT/IT segmentation for steel mills, and CERT-In incident reporting.
Tea, jute and exports
Eastern India's legacy export houses - tea, jute, textiles and seafood. Specific work on export-system perimeter security, vendor-EDI hardening, and customs-portal access controls.
Healthcare and education
AMRI, Apollo, Fortis Kolkata and major universities. Hospital-network ransomware resilience, medical-device segmentation, DPDP-aligned patient-data controls, and student-data DLP.
See industry-specific solutions across all sectors →
Threat patterns we are seeing in Kolkata (2025-2026)
A snapshot of patterns our SOC and incident-response team have observed in engagements with Kolkata customers over the past 12-18 months.
BFSI back-office targeting
Phishing and BEC campaigns targeting RBI-East-zone BFSI back-offices in Salt Lake and Rajarhat. Mitigation: phishing-resistant FIDO2 MFA, conditional access, anti-impersonation tuning, and recurring tabletop exercises.
PSU and government-portal attacks
Targeted reconnaissance against PSU contractors and state-government portal vendors in eastern India. Mitigation: external-attack-surface management, web-application firewalls with bot mitigation, and quarterly red-team exercises.
Ransomware on mid-market manufacturing
Howrah and Hooghly industrial belt customers hit through exposed RDP and unpatched edge devices. Mitigation: external-attack-surface management, immutable backups, EDR auto-isolation across plant and corporate networks.
Hospital-network ransomware
Mid-market Kolkata hospitals targeted by global ransomware affiliates. Mitigation: clinical-network segmentation, immutable backups for EMR data, ransomware-resilience tabletops with biomedical OEM coordination.
Frequently Asked Questions
Do you have engineers based in Kolkata?
Our HQ is in Sector-2, Noida; Kolkata coverage is delivered through our East-India regional engineering pool with next-business-day on-site dispatch. For long-term managed-service customers we co-locate engineers on-site under retainer.
What is your typical on-site SLA in Kolkata?
Next-business-day for Salt Lake Sector V, Rajarhat (New Town), Park Street, Camac Street and the central business district. Four-hour committed engineer dispatch is available on incident-response retainers. Howrah, Durgapur and Asansol are typically next-business-day with travel.
Can you support RBI Cyber Security Framework for East-zone banks?
Yes. We run gap assessments against RBI CSF and the IT Examination Manual, design control implementations, and package audit evidence for inspections. Includes recurring red-team exercises and breach-readiness drills.
Do you work with PSU contractors and GeM suppliers?
Yes - we help PSU contractors meet contractual cybersecurity clauses, package CERT-In incident-reporting evidence, and align to common PSU security expectations.
Which OEMs do you resell in Kolkata?
Palo Alto Networks, Fortinet, Cisco Secure, Microsoft Security and CrowdStrike Falcon - all with East-India regional SE coverage. We can also source Trend Micro, Tenable, Rapid7, Zscaler and others through distribution.
Can your SOC keep telemetry inside India?
Yes. By default our managed-service telemetry is stored in Indian data centres (typically a Mumbai or Chennai-region facility, both of which serve Kolkata well from a latency standpoint). Customers with specific RBI or PSU contractual requirements can request additional pinning.
Ready to talk to a security expert in Kolkata?
Get a quote, schedule a scoping call, or request an on-site visit.
Other locations we serve
NexaSource delivers on-site cybersecurity services across India. View our complete pan-India coverage →