Network & Application Security
Manual-first security assessments that identify exploitable vulnerabilities, validate real-world impact and provide clear remediation guidance.
Core security services
Explore the coverage and deliverables for each assessment. We agree boundaries, priorities and safety limits before testing.
Find exploitable weaknesses in the workflows your customers and teams rely on.
Coverage Identity and sessions · Access boundaries · Input and data handling
A coverage summary of agreed roles and workflows, reproducible findings with redacted request/response evidence, risk rationale and fixes tied to the affected application components. Retest scope is agreed before the engagement.
Test the security boundaries behind your integrations.
Coverage Object and function authorization · Tokens and identity · Schemas and responses
An endpoint/role coverage matrix, request and response evidence with sensitive values removed, impact explanations and remediation at the relevant authorization or validation boundary. Retest scope is agreed before the engagement.
Understand what is reachable, what is exposed and which paths matter.
Coverage Exposure and services · Known weaknesses · Segmentation
An approved-asset exposure inventory, validated weaknesses with affected endpoints, segmentation observations, prioritized fixes and explicit coverage limitations. Retest scope is agreed before the engagement.
Review the mobile client and the services it trusts.
Coverage Local data · Platform boundaries · Transport and identity
Build and platform coverage, affected component details, reproducible evidence, risk and remediation guidance for mobile and backend owners, plus agreed retest criteria. Retest scope is agreed before the engagement.
Assess the controls your organization owns in the cloud.
Coverage Identity and access · Storage and secrets · Network boundaries
Resource-specific observations, relevant permission or network paths, remediation with ownership context and a summary of untested accounts or services. Retest scope is agreed before the engagement.
Turn a list of possible vulnerabilities into a useful remediation backlog.
Coverage Asset context · Discovery coverage · Validation and triage
A scoped asset and coverage summary, a prioritized vulnerability register, confirmation status, remediation owners or owner fields, and criteria for verifying fixes. Retest scope is agreed before the engagement.
Validate whether a weakness becomes a meaningful attack path.
Coverage Objectives and boundaries · Trust relationships · Controlled validation
An objective and coverage summary, evidenced attack paths, affected assets, severity rationale, technical reproduction, practical mitigations and an agreed retest plan. Retest scope is agreed before the engagement.
Review how systems, identities and networks work together.
Coverage Hosts and management · Identity relationships · Connectivity and segmentation
A scoped architecture and exposure summary, cross-system findings, affected dependencies, hardening recommendations and prioritized remediation actions with retest criteria. Retest scope is agreed before the engagement.
Find where real settings diverge from intended security controls.
Coverage Access settings · Exposure and defaults · Data and transport
A baseline and applicability summary, evidence for deviations, business-context risk, proposed hardening changes and verification steps for approved remediation. Retest scope is agreed before the engagement.
Need help choosing the right starting point?
Use the assessment guide ↗Why R53SEC
A focused approach for founders, engineering leaders and security teams who need to decide what to fix and why.
Tools support discovery. Material findings are validated manually where feasible; unverified observations remain labelled.
Review how permissions, services and workflows combine, within explicitly agreed boundaries.
Reproduction steps, affected assets and impact help your team understand and address the root cause.
Agree a path from technical guidance to verification of specified fixes.
Agree access, evidence handling, retention and communication channels before work starts.
Security Research & Technical Insights
Our current library contains practical educational guidance and an illustrative assessment walkthrough. Explore how security questions become testable scope.
Guides
Define authorized assets, testing vantage points, safety limits and useful deliverables.
Read articleGuides
A practical review of API identity, object authorization, schemas and evidence.
Read articleTechnical Analysis
A fictional SaaS example showing scope, evidence and reporting. Not a client case study.
Read articleWhat You Receive
An executive risk summary and technical findings connect business impact to practical remediation.
Fictional scenario. Not a client finding or an assessment result.
Assessment lifecycle
Eight connected stages keep authorization, evidence and follow-through at the center of the engagement.
Agree assets, objectives, authorization, limits and stop conditions.
Map the approved attack surface and its trust boundaries.
Use appropriate tooling and manual review to identify candidates.
Reproduce important issues and distinguish evidence from assumptions.
Demonstrate only the impact permitted by the rules of engagement.
Explain risk, evidence, coverage limits and recommended fixes.
Discuss root causes and practical corrective actions with your team.
Check agreed fixes and record resolved, partial or remaining issues.
Scope and retest terms are agreed for each engagement.
Read the methodology ↗Business context
Data, workflows and operational constraints shape the assessment. We do not treat every environment as the same checklist.
Tenant isolation, account permissions, APIs and release-driven changes.
Sensitive transactions, authorization, data handling and integration boundaries.
Access to sensitive records, connected applications and data exposure.
Account security, checkout logic, order workflows and payment integrations.
IT exposure, remote access and segmentation. OT systems require a separately agreed specialist scope.
Client confidentiality, portals, access permissions and shared infrastructure.
A proportionate baseline before launch, customer assurance or rapid growth.
Resources
Use practical checklists and guides to prepare your team and define the questions an assessment should answer.
Explore all guides, checklists and technical analysis.
Visit the Resources hub ↗02 / Your starting point
Tell the R53SEC Guide what you want to protect. Get a suggested starting point and the reasons behind it.
Guided assessment assistant
Four questions · No sign-up
Uses predefined service-matching rules. Your answers stay in this page unless you add them to an enquiry and send it.
This guide helps scope a conversation. It does not scan your systems or measure your security risk.
Enable JavaScript to use the guided assessment, or tell us about your project.
06 / Let’s talk
Tell us about your environment and the questions you need answered. We’ll use your enquiry to discuss a suitable scope.
security@r53sec.inWe review your enquiry, clarify requirements and agree the scope before any testing begins.
