No industry concentrates access risk like banking. The systems are the money: core banking platforms, payment switches, settlement infrastructure. The workforce is large and layered - employees, contractors, and the vendors who built and still maintain much of the stack. And the scrutiny is constant, because financial regulators treat access control not as an IT preference but as a supervisory obligation, with the RBI Cyber Security Framework and SEBI's cyber resilience requirements setting explicit expectations.
The BFSI access problem in practice
Three scenarios recur in every bank's risk register. First, privileged access to core banking and payment systems: database administrators and application support engineers whose sessions can touch customer balances and transaction flows, historically with shared credentials and no session evidence. Second, vendor dependence: the application OEMs and system integrators who patch and troubleshoot production - external people on the most sensitive systems. Third, workforce churn across branches and back offices, where manual provisioning leaves joiners waiting and leavers lingering, and where the combination of capabilities one person accumulates can itself become the risk - the maker who is also the checker.
Where traditional controls fall short
Banks are rarely short of policy; the gap is enforcement and evidence. Shared superuser credentials make individual accountability impossible however strict the policy reads. Standing vendor VPN accounts contradict the time-bounded nature of maintenance engagements. Spreadsheet access reviews rubber-stamp entitlements nobody can interpret. And when the inspector asks for privileged session evidence on a payment system, grepping terminal histories is not an answer that survives.
The Tanflow approach across the two layers
Workforce identity - Tanflow IAM Suite. The joiner-mover-leaver flow is automated from the HR source of truth, with SCIM provisioning creating and disabling accounts across connected systems and reconciliation catching drift. SSO over SAML 2.0, OAuth2 and OIDC consolidates authentication, with MFA - TOTP, OTP and FIDO2 - enforced centrally. RBAC and governance provide the structures a regulated institution needs on record: roles aligned to function, access requests with approvals, certification campaigns run against live data, and segregation-of-duties rules that surface toxic combinations before an auditor does.
Privileged access - Tanflow PAM. For the administrators and vendors touching core systems, the zero-agent gateway model applies the full chain: MFA at the portal, policy-based authorisation to specific targets, vault-injected credentials nobody sees, complete session recording, and real-time command control. Tanflow highlights maker-checker-style workflows for this sector - access requested with a reason and approved before it exists - alongside audit evidence for core banking and payment systems. Graduated command verdicts fit banking realities precisely: destructive operations on production can terminate the session and alert the SOC, while sensitive reads - exporting customer tables, accessing payment logs - can demand a logged business justification rather than a blunt block.
Vendor engagements run as time-boxed JIT windows: an OEM engineer gets exactly the target and the hours the change ticket describes, in a recorded session with injected credentials, and the access self-expires. The External Access Monitor watches for logins that bypass the gateway - closing the path around the control.
An illustrative scenario
Consider a banking organisation running a quarterly patch on its payment infrastructure with the application vendor's engineers. Under Tanflow, the engagement is a set of approved JIT windows tied to the change record. Each vendor session is browser-based, MFA-authenticated, credential-injected, recorded and command-policed; the internal application owner supervises live via session sharing. When the window closes, access is gone, and the change file contains the complete evidence set - requests, approvals, recordings, command logs - without anyone assembling it.
Regulatory and audit implications
Tanflow publishes a compliance mapping describing how its capabilities align with the frameworks financial institutions are assessed against - the RBI Cyber Security Framework, SEBI cyber resilience requirements, and international baselines including ISO 27001, PCI DSS and SWIFT CSP. The mapping language matters: these are controls mapped to framework expectations - privileged session audit, access governance evidence, strong authentication - which is exactly the form in which inspectors consume them.
Conclusion
Banking security programmes succeed or fail on the unglamorous middle layer between policy and infrastructure: who can access what, how strongly authenticated, how bounded, and how evidenced. Tanflow's IAM Suite and PAM supply that layer as one platform, deployed inside the bank's own perimeter - so that when the regulator's first question arrives, the answer is a report, not a project.