File security on GNU/Linux
Permissions, credentials and configurations: what to check when a standard user account can expose sensitive information or provide access to protected resources.
In ItalianConsulting for businesses and IT teams
Cybersecurity consulting: assessment and hardening
Understand where your infrastructure is exposed and decide which changes to make first. Technical assessment and hardening turn findings about configuration, access and operations into a plan for improvements and follow-up checks.
When a security assessment helps
For businesses, IT managers and technical teams that need to review an existing environment, prepare for changes or prioritise security measures.
- Exposed services, administrative access or configurations that have grown without a coordinated review.
- Questions about privileges, updates, credential management and event visibility.
- A need to distinguish urgent changes, dependencies and work that can be scheduled.
Assessment and hardening: what to review
The technical scope is agreed with your team. The assessment gathers evidence from the agreed environment and turns it into actions prioritised by impact and feasibility.
- Inventory of the systems and services in scope, their exposure and operational dependencies.
- Review of access, privileges, configurations, updates and the collection of available logs.
- Hardening and remediation proposals, with follow-up checks on the agreed changes.
Access, authorisation and constraints
Before work begins, we need a technical contact, a list of the systems involved and appropriate authorisation. Access, the data available for analysis, maintenance windows and recovery criteria are defined together.
- In production, activities and tools are chosen according to their impact on existing services.
- Changes require backups or recovery procedures appropriate to the environment.
- The team retains visibility over decisions, responsibilities and planned checks.
An explicit scope
A technical assessment does not automatically include a penetration test or certify regulatory compliance. A penetration test, ongoing incident management or legal advice requires a separate engagement.
- No scanning or testing of systems outside the authorised scope.
- No promise of absolute security or the elimination of every risk.
- The approach and priorities depend on the architecture, available data and operational constraints.
From analysis to a usable plan
Deliverables are agreed at the start so your team can assess the work completed and plan the next steps.
- A summary of the scope examined, evidence collected and limitations of the assessment.
- A list of observed issues and proposed actions, with priorities and dependencies.
- Documentation of changes made and validation results, when remediation is included in the engagement.
Technical reasoning on the blog
The Linux file security guide examines exposure that can arise even through a standard user account. This public article, written in Italian, explains the technical reasoning and helps you prepare a discussion about your environment.
Frequently asked questions
A useful engagement starts with a clear scope from the first discussion.
Does the assessment include a penetration test?
Not automatically. Technical assessment and hardening have an agreed scope; a penetration test requires objectives, authorisation and activities defined in a separate engagement.
Can the work take place in production?
That depends on the expected impact on services. Access, tools and checks are agreed before work begins; changes also require maintenance windows and recovery criteria.
Describe your security concern
Describe your environment, goals and operational constraints. The area of interest is preselected for this service; you can change it in the menu. Marvin is your point of contact. Scope, responsibilities and how the work will be delivered are agreed before the engagement begins.