An independent security testing firm in Ahmedabad, New York, and London.
Hackstack Security is an independent cybersecurity firm helping organizations build, launch, and operate with confidence.
We test the way attackers work, then help you fix what we find.
We believe security works best when it is precise, transparent, and integrated with the way people actually build and operate technology.
Our job is not to create fear or deliver a report that sits unread. It is to help clients understand risk, make better decisions, and improve the systems their customers depend on.
What we hold ourselves to.
Trust is earned through the quality of the work, the clarity of communication, and the way sensitive information is handled.
Ethics
We put trust, privacy, and responsible practice at the center of every engagement.
Innovation
We continuously evolve our methods to meet fast-changing technologies and threats.
Transparency
We communicate clearly, directly, and without unnecessary complexity.
Ahead of threats
We help clients act before exposure becomes impact.
Precision
We focus effort where it produces the most meaningful reduction in risk.
Commitment
We stay involved until the risk is actually reduced.
Who do we work with?
Teams whose customers, regulators, or partners expect proof that their systems are secure.
SaaS
Protect multi-tenant products, APIs, and fast-moving engineering teams.
Fintech
Validate transaction flows, identity controls, and regulatory resilience.
Healthcare
Reduce exposure around sensitive patient data and connected systems.
Enterprise IT
Test complex infrastructure, cloud estates, and critical applications.
Startups
Build the security evidence needed to win enterprise customers.
Regulated business
Connect compliance obligations to measurable risk reduction.
Where is Hackstack Security based?
Our distributed presence supports clients across time zones and technology ecosystems.
Ahmedabad
1204 Privilon, Ahmedabad, Gujarat 380054New York
Hanover St., Bronx, New York, NY 10453London
38 Alexander Road, London, London E13 9ULWant to see how we would test your system?
Share your targets, deadline, and any compliance driver. We reply with a proposed scope, test approach, and timeline. There is no obligation.