Load Testing and VAPT Services for Software Applications
Dexpert Systems helps organisations release software that performs reliably under real-world demand and withstands security threats. We provide independent load and performance testing, together with Vulnerability Assessment and Penetration Testing (VAPT), for web, mobile and enterprise applications.
Performance and security are business risks, not merely technical ones
An application that slows down during peak usage loses users and revenue. An application with an exploitable vulnerability exposes data, reputation and regulatory standing. Testing both before go-live — and periodically thereafter — allows these risks to be identified and corrected in a controlled manner.
Release with confidence
Validate that the application meets agreed response-time, throughput and stability targets before it reaches users.
Reduce security exposure
Identify and prioritise vulnerabilities before they can be exploited, with clear guidance for remediation.
Support compliance
Obtain documented, independent test evidence for audits, client due-diligence and internal governance.
Two specialised testing practices
Load & Performance Testing
We simulate realistic user volumes and transaction patterns to measure how the application, its infrastructure and its integrations behave under load, and to locate the bottlenecks that limit capacity.
- Load testing — behaviour at expected peak concurrency
- Stress testing — breaking point and recovery beyond peak
- Spike testing — response to sudden surges in traffic
- Endurance (soak) testing — stability, memory and resource usage over extended periods
- Scalability testing — capacity gained as infrastructure is added
- API & database performance — service and query-level response times
Vulnerability Assessment & Penetration Testing (VAPT)
We combine automated scanning with manual, expert-led testing to identify security weaknesses, verify whether they can be exploited, and assess their impact on the business.
- Web application VAPT — authentication, session, access-control and input-handling flaws
- Mobile application VAPT — Android and iOS apps and their back-end services
- API security testing — REST and SOAP endpoints, authorisation and data exposure
- Network & infrastructure VAPT — servers, firewalls and exposed services
- Cloud configuration review — misconfigurations in hosted environments
- Re-testing — verification that reported issues have been fixed
A structured engagement from scoping to closure
Every engagement follows a defined sequence, so that scope, test conditions and outcomes are agreed and documented at each stage.
Scoping & planning
Agree objectives, in-scope systems, user scenarios, performance targets and rules of engagement.
Environment & script preparation
Prepare test scripts, data and workload models, or security test cases, for the agreed scope.
Test execution
Run load scenarios or security tests in a controlled manner, with continuous monitoring.
Analysis & reporting
Analyse results, identify root causes and risk levels, and document findings with recommendations.
Remediation support & re-test
Clarify findings with your team and re-test once corrections have been made.
Industry-recognised tools and methodologies
Performance testing tools
Security testing tools
Standards and frameworks followed
What you receive
| Load & Performance Testing | VAPT |
|---|---|
| Test plan and workload model | Scope and rules-of-engagement document |
| Response time, throughput and error-rate results for each scenario | Executive summary of overall security posture |
| Server and infrastructure utilisation analysis | Detailed findings with severity (CVSS) ratings |
| Bottleneck identification and tuning recommendations | Proof of concept and steps to reproduce for each finding |
| Capacity assessment against stated targets | Remediation guidance and re-test report |
Common questions
When should load testing be carried out?
Before a new application goes live, before anticipated traffic peaks, and after significant changes to code, infrastructure or integrations.
How often should an application undergo VAPT?
At minimum annually, and additionally after major releases, architectural changes, or where required by a client, regulator or auditor.
Will testing disrupt our production systems?
Testing windows, environments and intensity are agreed in advance. Where possible, load tests are run in a production-equivalent environment, and security tests are conducted within agreed rules of engagement.
Is our data kept confidential?
All engagements are conducted under a confidentiality agreement, and test data and findings are shared only with designated contacts.
Do you re-test after we fix the issues?
Yes. Re-testing of reported findings is part of the engagement, and an updated report is issued on completion.
Discuss your testing requirement
Share the application details and your objectives, and our team will respond with a proposed scope and approach.