Penetration testing and security services for everything you ship.
Hackstack Security offers 21 human-led security services across AI assurance, offensive security, product and cloud security, and governance. Each one is scoped to your environment and delivered with validated findings and a retest.
Is your AI application safe to ship?
Only once it has been tested as a whole system: the model, prompts, retrieval, memory, tools, and the permissions around them.
Our AI security testing and AI red teaming show how your LLM features behave under direct and indirect prompt injection, data exfiltration attempts, and agent tool abuse, and which of your guardrails actually hold.
- Prompt injection
Direct and indirect injection through inputs, documents, and tools
- Data isolation
Cross-user and cross-tenant leakage through retrieval and memory
- Agent and tool abuse
Actions beyond the requesting user’s authority
- Guardrail bypass
Jailbreaks, encodings, and multi-turn manipulation
- Output handling
Model output reaching interpreters, browsers, or APIs unsafely
AI & LLM security
Evaluate LLM applications, agents, retrieval systems, tools, and guardrails under realistic adversarial pressure.
AI & LLM Security
Expert-led security testing for AI-enabled applications, LLM workflows, copilots, agents, retrieval systems, and the APIs that connect them.
AI Red Teaming
Scenario-driven adversarial testing that evaluates how AI systems respond to misuse, manipulation, data exposure, unsafe actions, and control bypass attempts.
Find the paths attackers would use
Validate exploitable risk across applications, APIs, mobile products, infrastructure, and external attack surfaces.
Web App Security
Expert-led web application penetration testing that uncovers business logic failures, access control weaknesses, and exploitable risk beyond automated scanning.
API Security
Deep testing for REST, GraphQL, SOAP, and internal APIs, focused on authorization, data exposure, abuse paths, and real-world attacker behavior.
Mobile Security
Manual iOS and Android security testing across application logic, local storage, transport, platform controls, and connected APIs.
Infrastructure VAPT
Penetration testing for networks, hosts, services, and enterprise infrastructure with clear validation of realistic compromise paths.
Red Teaming
Goal-driven attack simulation that tests people, process, and technology against realistic adversary behavior without unnecessary disruption.
Attack Surface Review
A focused review of internet-facing assets, forgotten services, exposed credentials, risky configurations, and digital impersonation opportunities.
Secure the systems you ship
Strengthen software delivery, cloud architecture, connected devices, source code, and the systems around them.
Cloud Security
Architecture and configuration reviews that identify excessive access, exposed services, weak guardrails, and high-impact cloud attack paths.
Secure Code Review
Manual, context-aware source code review that identifies vulnerabilities scanners miss and helps engineering teams build safer software.
DevSecOps Review
Practical review of pipelines, security tooling, release gates, secrets, dependencies, and developer workflows to improve security without slowing delivery.
Supply Chain Security
A practical review of source integrity, third-party dependencies, build systems, artifacts, release controls, and software provenance.
Architecture Review
Threat-informed architecture review for new platforms, critical changes, and complex systems before design decisions become expensive to reverse.
OT & IoT Security
Security assessment for IoT products, connected devices, industrial environments, and the cloud services, applications, and protocols around them.
Web3 Security
Secure smart contracts, protocols, wallets, and blockchain infrastructure through deep manual review and adversarial testing.
Build durable security
Improve readiness, compliance, data protection, threat visibility, and product vulnerability response.
Compliance & GRC
Build practical, audit-ready security programs aligned to the standards customers, regulators, and partners expect.
Gap Assessment
Translate technical controls, business objectives, and regulatory expectations into a practical security improvement roadmap.
Data Security
Discover sensitive information, reduce unnecessary exposure, and establish controls that keep critical data secure throughout its lifecycle.
Threat Intelligence
Relevant, actionable intelligence that helps security teams detect exposure, understand adversaries, and move before incidents occur.
Incident Readiness
Practical incident readiness reviews and tabletop exercises that test escalation, communication, technical response, and executive decision-making.
PSIRT
Establish a mature product security incident response capability that protects customers, coordinates engineering, and preserves confidence.
Not sure which assessment fits?
Share your targets, deadline, and any compliance driver. We reply with a proposed scope, test approach, and timeline. There is no obligation.