Network Vulnerability Testing
Scheduled vulnerability scans and periodic CREST-led penetration tests - so you know how exposed you really are.

Find external and internal weaknesses before attackers do
Network vulnerability testing checks your systems, services and devices for known weaknesses, missing patches and misconfigurations. Done regularly - not annually - it becomes a working risk view instead of a one-off report.
- Finds internet-facing exposure and forgotten services
- Supports realistic remediation planning
- Provides evidence for insurance and assurance
- Testing is scheduled, not requested in a panic
- Findings have owners and target dates
- Repeat issues are tracked and root-caused
When was your last vulnerability test - and were the findings actually fixed?
Ask us to run a vulnerability and exposure review.
Understanding vulnerability testing
There's a big difference between automated vulnerability scanning (continuous, broad, lower-depth) and penetration testing (point-in-time, narrow, deep). You need both. We run a managed scanning programme and arrange CREST-led penetration tests at the cadence your customers, regulator or insurer expects.
- Cyber Essentials & Cyber Essentials Plus
- ISO 27001:2022 Annex A controls
- NCSC 10 Steps to Cyber Security
- CIS Critical Security Controls v8
What we deploy and run
The concrete controls Telappliant configures, manages and reports on.

Vulnerability Testing as run by a UK SOC and engineering team.
Authenticated internal vulnerability scanning.
External attack surface scanning - see what attackers see.
Web application scanning for public-facing apps.
Annual or biannual CREST-led pen tests via trusted partners.
Remediation planning and verification scans.
Trend reporting to demonstrate posture improvement.
Why Telappliant
What you get with us that you don't get with the alternatives.
Delivered by a UK SOC and engineering team - no offshored ticketing.
Vendor-agnostic. We pick the right tool for your estate, then run it for you.
Mapped to Cyber Essentials, ISO 27001 and the NCSC 10 Steps from day one.
Fixed monthly price - no surprise hourly bills when something goes wrong.
The outcomes for your business
What changes for your team, your auditors and your insurer.
Find issues before customers or attackers do.
Evidence for ISO 27001, SOC 2 and customer questionnaires.
Clear remediation roadmap, not a 600-page PDF.
Measurable trend over time - the curve moves.
Measured outcomes, not promises
3000+ UK organisations served and 100000+ end users supported.
< 60 minute average response on security incidents.
4000+ tickets resolved every month with measurable first-time-fix rates.
Vendor-fluent, not vendor-locked
We pick the right tool for your estate, then run it for you.
Trademarks are the property of their respective owners. We have no affiliation unless stated on our partners page.
Use cases
How this capability fits at different scales.
First-time vulnerability scan and remediation programme.
Continuous scanning across sites with quarterly executive reporting.
Annual CREST pen test combined with continuous scanning.
How this applies to organisations like yours
Recent situations we've worked through with UK businesses - find the one closest to yours.
Situation. PCI scope required external ASV scanning that the team didn't have time to run.
Outcome. Managed quarterly ASV plus monthly internal scanning with executive report.
Situation. First enterprise customer demanded an independent pen test.
Outcome. CREST-style assessment plus remediation support; customer security review passed.
Situation. ITT required evidence of regular network testing.
Outcome. Schedule of authenticated and unauthenticated scans with trend reporting.
Situation. Acquired three firms in a year, each with unknown network exposure.
Outcome. Discovery and assessment sweeps integrated each estate quickly and safely.
Common questions
Related fundamentals & services
Microsoft 365 Security Hardening
Most SMEs already pay for the controls that cover vulnerability testing. We help you turn Microsoft 365 Business Premium into a real security baseline - the front door into the wider Cyber Fundamentals portfolio.
Explore Microsoft 365 hardeningTalk to us about vulnerability testing
A 30-minute call to scope what good looks like in your estate.
Talk to a UK technology partner who's done this for 20 years
Book a practical, no-pressure consultation. We'll review your current setup, show where AI communications, cloud telephony or managed IT could improve customer experience and reduce admin - and tell you straight if you don't need us.
- UK-based people, real account management
- Honest recommendations - even if it's not us
- Practical AI where it adds value, not hype
