Schedule a call

Expertise · Domain 03

Cybersecurity
& Application
Security

We assess the security of internet-facing systems — from exposed services and infrastructure configuration to web applications, APIs and access controls.

Our offering covers basic external security assessments, authorized penetration testing and remediation. We review what is accessible from outside, investigate potential weaknesses within an agreed scope and provide prioritized findings with practical recommendations.

Our software engineering background allows us to carry the work through to implementation: fixing application issues, hardening infrastructure and retesting the affected systems.

← All domains

01 / Our expertise spans

External exposure to
application security

  • External Security AssessmentA basic review of publicly accessible domains, hosts, ports and services to identify unnecessary exposure, visible configuration weaknesses and issues requiring further investigation.
  • Web Application SecurityAssessment of authentication, session handling, access controls and input handling to identify weaknesses in how applications protect their functionality and data.
  • API SecurityReview of API endpoints, authorization boundaries, data exposure and request handling, with testing depth determined by the agreed scope and available access.
  • Email, DNS & TLSChecks of email authentication records, DNS configuration, certificates and TLS settings to identify weaknesses in domain protection and connection security.
  • Authorized Penetration TestingControlled testing to investigate vulnerabilities and validate their impact. Targets, methods, access requirements and testing windows are agreed in advance, with explicit authorization.
  • Remediation & HardeningApplication fixes and infrastructure changes to address identified findings, strengthen access controls and reduce unnecessary exposure.
  • Retesting & MonitoringFollow-up checks to verify remediation, with optional recurring external assessments to identify new exposure and configuration changes.

02 / What this means for our clients

From exposure to
remediation

We connect security assessment with the engineering work needed to address the findings:

external assessment → authorized testing → prioritized findings → application fixes → infrastructure hardening → retesting → ongoing monitoring

This makes SG Systems a practical partner for businesses that need both a clear view of their security weaknesses and help resolving them. We can implement remediation directly or work alongside an existing development and infrastructure team.

Each engagement starts with an agreed scope. A basic external assessment covers what can be observed from outside; deeper penetration testing and authenticated reviews require separate authorization and access.

Discuss your security →

03 / Reference projects

Proof of Work

More under
NDA

External assessments · Penetration testing · Remediation · Security hardening

Security engagements can involve sensitive information about systems, vulnerabilities and infrastructure. We keep client-specific findings confidential and can discuss relevant experience, assessment methods and remediation approaches on a call, within applicable confidentiality restrictions.

Ask us about it →

Find the gaps. Fix what matters.

Discuss your security → Power & Utilities expertise FinTech expertise