Common
Sense
Security
Deep, expert-led security validation for modern applications.
Understand your application like an attacker.
Strengthen it where it matters.
Approach — Security Deep Dive
Philosophy
&
Methodology
Security automation is useful, but it only sees what it’s told to find.
Attackers don’t work that way. They take time, think creatively, bend assumptions, and chain small oversights into compromises.
SealSec reflects that reality. Engagements are driven by deep application understanding, collaboration with your team, and a solid grasp of attacker intent and capability.
- Deep, deliberate analysis — not generic checklists.
- Contextual findings grounded in real attack paths and business impact.
- Collaborative engagement that keeps your team aligned throughout.
- Clear communication so your engineers can act quickly and confidently.
SealSec — Security Services
Web
Modern applications often run on web APIs — making backends a prime attack surface.
Secure your APIs to lessen exposure to data leaks, business-logic abuse, and automated attacks that never touch your front-end.
Mobile
Most users interact with your application on mobile — and attackers know it.
Still, mobile apps are often run on untrusted, poorly secured devices.
Harden your mobile app so tampering and backend abuse become much harder.
Gaming
Strong client-side protections slow attackers down, but real resilience combines server-side logic, device attestation, and an abuse-resistant design.
We help you test and build the layers that make cheats, bots, and economy exploits far harder to execute.
Cloud
Cloud application security fails when trust boundaries are unclear, identities are over-privileged, or workloads are exposed through misconfiguration.
Harden the layers that matter: identity, infrastructure, network paths, and the logic that ties them together.
Reporting
We deliver a clear, high-signal security report with contextualized vulnerabilities and practical guidance that decision-makers can act on immediately.
Each report includes a simple, prioritized roadmap to improve your application's security.
Consulting
Security doesn’t end with the report.
SealSec offers consulting services for follow-up improvements and ongoing guidance as your application evolves.
Recent Work
• A cross-tenant access path in a SaaS platform caused by a single overlooked authorization check — exposing customer data.
• A misconfiguration that enabled privilege escalation across internal services.
• Design weaknesses in a licensing scheme that allowed large-scale abuse.
• Unlocked debug endpoints leaking proprietary code.
“SealSec found a serious flaw in our SSO deployment and supported our team with fixing it the next day.” — Engineering Manager
SealSec — Blog
Impact of Cybercrime
The impact of crime in the real world is often directly visible.
What do we know about the human impact of cybercrime?
This post explores recent research (Borwell, 2025).
AI-Driven Attacks
We may choose to ignore or deny AI, but malicious actors don't.
Attacker skill scales, almost for free, with increased quality of LLM-based tooling.
This post analyses a recent large-scale attack, that was mostly run by AI agents.
Game Economies
Games are simulated worlds with, to varying degrees, real economies.
This post takes a look at the impact on users' perception of a game when it has a weak security posture — enabling cheats like aimbots and wallhacks.
Start a security deep dive.
Curious about the security posture of your applications?
Send a brief system overview, we’ll map real attacker paths & share next steps: info@sealsec.nl
Next Steps
• Kickoff call & system overview
• Attacker-realistic deep dive (client, API, logic)
• Weekly syncs & interim findings
• Testing report, prioritized roadmap & optional followup