Common
Sense
Security

Security engineering for SaaS teams facing customer security questions, ISO evidence needs, or product security concerns.

Deep security review, practical guidance, and evidence to share with customers.

Strengthen what matters.

Approach: Security Deep Dive

Philosophy

&

Methodology

Security automation is useful, but it only sees what it is told to find.

Attackers explore real product behavior, bend assumptions, and chain small oversights into practical attack paths.

SealSec combines deep application understanding, attacker-realistic testing, and security engineering in close collaboration with your team.

For SaaS teams, findings should become owned engineering work, verified fixes, and useful evidence.

• Deep, deliberate analysis, not generic checklists.

• Findings grounded in real attack paths and business impact.

• Vulnerability triage that separates real risk from scanner noise.

• Engineering follow-up toward owned, verified improvement.

• Clear communication and evidence your team can use.

Services for SaaS Teams

First Security Sprint


SaaS teams often need more than a one-off pentest when faced with customer questions or ISO evidence needs.

Use one focused security sprint to establish a practical security process: inventory, testing, triage, follow-up, verification, and evidence.

Download our Security Sprint pdf.

Web & API


Modern applications expose their most important logic through web interfaces and APIs.

SealSec tests authentication, authorization, business logic, tenant boundaries, data access, and abuse paths that scanners often miss.

Mobile


Mobile apps run on devices you do not control.

SealSec reviews app behavior, backend trust assumptions, API usage, session handling and tampering risks.

Cloud & Exposure Review


SaaS security also depends on the systems around the application.

SealSec reviews exposed services, identity, infrastructure touchpoints, admin surfaces, CI/CD, logging, and shared-responsibility gaps.

Customer Evidence


Findings should not disappear into a static PDF.

SealSec provides clear reporting, prioritized remediation guidance, verification support, and evidence your team can use with customers, management, ISO-related work, and security reviews.

AI Feature Review


AI-enabled features introduce new product security questions.

SealSec reviews data access, authorization, tenant isolation, prompt and tool abuse, logging, and high-risk AI workflows.

Recent Work

• Helped resolve cross-tenant access paths in SaaS platforms caused by overlooked authorization checks.

• Delivered vulnerability triage workflows that separate real risk from scanner noise and route findings to engineering.

• Identified misconfigurations that enabled privilege escalation across internal services.

• Exposed debug endpoints and supporting systems leaking sensitive technical information.

SealSec found a serious flaw in our SSO deployment and supported our team with fixing it the next day.” – Engineering Manager

SealSec Blog

Customer-Ready SaaS Security


When is a SaaS team ready to handle customer data?

A practical look at security readiness, testing, backups, monitoring, incident response, and customer evidence.

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.

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).

Book a free fit call.

Running a SaaS and facing customer security questions, ISO evidence work, or an upcoming release?

Send a brief product overview and the security pressure you are dealing with. SealSec will help map the next practical steps.

Next Steps

• Kickoff call & system overview

• First security sprint for SaaS teams handling customer data

• Targeted web, mobile, API, tenant-boundary, cloud, or AI security testing

• Vulnerability triage and scanner-noise reduction

• Remediation support and fix verification

• Clear reporting and evidence your team can use

info@sealsec.nl