Is Your Business
As Secure As You Think?

Continuous security monitoring and penetration testing from the team that understands your systems inside out.

ISO 27001 Aligned
Cyber Essentials
GDPR Compliant
25+ Years Experience
ISO 27001 Aligned
Cyber Essentials
GDPR Compliant
25+ Years Experience
ISO 27001 Aligned
Cyber Essentials
GDPR Compliant
25+ Years Experience

Why Choose iSOS for Security?

We don't just hand you a report and disappear. We work alongside you to strengthen your security.

We Know Your Systems

We've built solutions for businesses like yours for over 25 years. That experience means we know where vulnerabilities hide.

Ongoing Partnership

Security isn't a one-time tick-box. We provide continuous monitoring and support, not just a single audit that goes stale.

Plain English Reports

No 100-page technical documents gathering dust. We tell you what matters, what's urgent, and what to do about it.

We Fix What We Find

Unlike many security firms, we don't just report problems - we help you resolve them too.

UK-Based Team

Your data stays in the UK. Our team is based here, understands UK compliance, and is available when you need us.

Fast Response Times

Critical issues get addressed in hours, not days. Our Partner clients get a 4-hour emergency SLA.

We Know Your Systems

We've built solutions for businesses like yours for over 25 years. That experience means we know where vulnerabilities hide.

Ongoing Partnership

Security isn't a one-time tick-box. We provide continuous monitoring and support, not just a single audit that goes stale.

Plain English Reports

No 100-page technical documents gathering dust. We tell you what matters, what's urgent, and what to do about it.

We Fix What We Find

Unlike many security firms, we don't just report problems - we help you resolve them too.

UK-Based Team

Your data stays in the UK. Our team is based here, understands UK compliance, and is available when you need us.

Fast Response Times

Critical issues get addressed in hours, not days. Our Partner clients get a 4-hour emergency SLA.

We Know Your Systems

We've built solutions for businesses like yours for over 25 years. That experience means we know where vulnerabilities hide.

Ongoing Partnership

Security isn't a one-time tick-box. We provide continuous monitoring and support, not just a single audit that goes stale.

Plain English Reports

No 100-page technical documents gathering dust. We tell you what matters, what's urgent, and what to do about it.

We Fix What We Find

Unlike many security firms, we don't just report problems - we help you resolve them too.

UK-Based Team

Your data stays in the UK. Our team is based here, understands UK compliance, and is available when you need us.

Fast Response Times

Critical issues get addressed in hours, not days. Our Partner clients get a 4-hour emergency SLA.

Continuous Security, Monthly Pricing

Three tiers, dead simple. Monthly scan. Monthly scan + monitoring. Weekly scan + monitoring. Pick in seconds.

Package 1

Shield

Monthly vulnerability scanning. Your digital front door is the first thing attackers check. Every report includes an overall security score, automatic SSL expiry alerts, and we flag services you didn't know were exposed.

£99/month

Minimum 3-month commitment

  • Monthly external vulnerability scan
  • Up to 5 public-facing IPs and 1 web application
  • Automated scanning with up-to-date vulnerability databases
  • Web application checks against OWASP Top 10 standards
  • Industry-standard severity ratings (Critical / High / Medium / Low / Info)
  • Overall security score (A-F grade) in every report
  • SSL/TLS certificate expiry monitoring with 30/14/7-day alerts
  • Asset discovery - we flag any unexpected exposed services
  • Professional PDF report with executive summary
  • Remediation guidance for each finding
  • Email summary of new, resolved, and recurring vulnerabilities
  • Trend tracking - see your security posture improve over time
Get Started
Package 3

Citadel

Weekly vulnerability scanning + continuous endpoint monitoring. The complete package. Plus breach monitoring for your domain, a monthly threat briefing, and an "iSOS Verified" badge for your website.

£449/month

Minimum 6-month commitment

  • Weekly external vulnerability scan
  • Up to 15 public-facing IPs and 3 web applications
  • Security monitoring on up to 10 endpoints
  • Real-time file integrity monitoring
  • Rootkit and malware detection
  • Log collection and analysis
  • Vulnerability detection (CVE matching)
  • Security configuration assessment against CIS benchmarks
  • Overall security score (A-F grade) in every report
  • SSL/TLS certificate expiry monitoring with 30/14/7-day alerts
  • Asset discovery - we flag any unexpected exposed services
  • Data breach monitoring - we check if your domain appears in known breaches
  • "iSOS Verified" badge for your website
  • Monthly threat briefing - threats relevant to your sector
  • Weekly combined report covering scans and monitoring
  • Monthly summary report with trend analysis
  • Immediate email alerts for Critical/High severity events
  • Priority email support (next business day response)
Get Started
Enterprise

Enterprise

Security doesn't come in a box. Enterprise is for organisations that need more - more endpoints, more applications, more IPs, and reporting that maps directly to your compliance framework. We scope the engagement to your environment and deliver the coverage your business demands.

Ideal for: Organisations needing custom scoping, compliance-ready reporting (Cyber Essentials, ISO 27001, PCI DSS, GDPR), and dedicated support with agreed SLAs.

  • Everything in Citadel, plus:
  • Custom IP, web application, and endpoint allowances
  • Custom scan frequency (daily available)
  • Custom alert rules tuned to your environment
  • Compliance-ready reporting (Cyber Essentials, ISO 27001, PCI DSS, GDPR)
  • Dedicated email support with agreed SLA
  • Quarterly review meetings
  • Scoped and priced based on your requirements
Please Enquire

12-month commitment

Get in Touch
Package 1

Shield

Monthly vulnerability scanning. Your digital front door is the first thing attackers check. Every report includes an overall security score, automatic SSL expiry alerts, and we flag services you didn't know were exposed.

£99/month

Minimum 3-month commitment

  • Monthly external vulnerability scan
  • Up to 5 public-facing IPs and 1 web application
  • Automated scanning with up-to-date vulnerability databases
  • Web application checks against OWASP Top 10 standards
  • Industry-standard severity ratings (Critical / High / Medium / Low / Info)
  • Overall security score (A-F grade) in every report
  • SSL/TLS certificate expiry monitoring with 30/14/7-day alerts
  • Asset discovery - we flag any unexpected exposed services
  • Professional PDF report with executive summary
  • Remediation guidance for each finding
  • Email summary of new, resolved, and recurring vulnerabilities
  • Trend tracking - see your security posture improve over time
Get Started
Package 3

Citadel

Weekly vulnerability scanning + continuous endpoint monitoring. The complete package. Plus breach monitoring for your domain, a monthly threat briefing, and an "iSOS Verified" badge for your website.

£449/month

Minimum 6-month commitment

  • Weekly external vulnerability scan
  • Up to 15 public-facing IPs and 3 web applications
  • Security monitoring on up to 10 endpoints
  • Real-time file integrity monitoring
  • Rootkit and malware detection
  • Log collection and analysis
  • Vulnerability detection (CVE matching)
  • Security configuration assessment against CIS benchmarks
  • Overall security score (A-F grade) in every report
  • SSL/TLS certificate expiry monitoring with 30/14/7-day alerts
  • Asset discovery - we flag any unexpected exposed services
  • Data breach monitoring - we check if your domain appears in known breaches
  • "iSOS Verified" badge for your website
  • Monthly threat briefing - threats relevant to your sector
  • Weekly combined report covering scans and monitoring
  • Monthly summary report with trend analysis
  • Immediate email alerts for Critical/High severity events
  • Priority email support (next business day response)
Get Started
Enterprise

Enterprise

Security doesn't come in a box. Enterprise is for organisations that need more - more endpoints, more applications, more IPs, and reporting that maps directly to your compliance framework. We scope the engagement to your environment and deliver the coverage your business demands.

Ideal for: Organisations needing custom scoping, compliance-ready reporting (Cyber Essentials, ISO 27001, PCI DSS, GDPR), and dedicated support with agreed SLAs.

  • Everything in Citadel, plus:
  • Custom IP, web application, and endpoint allowances
  • Custom scan frequency (daily available)
  • Custom alert rules tuned to your environment
  • Compliance-ready reporting (Cyber Essentials, ISO 27001, PCI DSS, GDPR)
  • Dedicated email support with agreed SLA
  • Quarterly review meetings
  • Scoped and priced based on your requirements
Please Enquire

12-month commitment

Get in Touch
Package 1

Shield

Monthly vulnerability scanning. Your digital front door is the first thing attackers check. Every report includes an overall security score, automatic SSL expiry alerts, and we flag services you didn't know were exposed.

£99/month

Minimum 3-month commitment

  • Monthly external vulnerability scan
  • Up to 5 public-facing IPs and 1 web application
  • Automated scanning with up-to-date vulnerability databases
  • Web application checks against OWASP Top 10 standards
  • Industry-standard severity ratings (Critical / High / Medium / Low / Info)
  • Overall security score (A-F grade) in every report
  • SSL/TLS certificate expiry monitoring with 30/14/7-day alerts
  • Asset discovery - we flag any unexpected exposed services
  • Professional PDF report with executive summary
  • Remediation guidance for each finding
  • Email summary of new, resolved, and recurring vulnerabilities
  • Trend tracking - see your security posture improve over time
Get Started
Package 3

Citadel

Weekly vulnerability scanning + continuous endpoint monitoring. The complete package. Plus breach monitoring for your domain, a monthly threat briefing, and an "iSOS Verified" badge for your website.

£449/month

Minimum 6-month commitment

  • Weekly external vulnerability scan
  • Up to 15 public-facing IPs and 3 web applications
  • Security monitoring on up to 10 endpoints
  • Real-time file integrity monitoring
  • Rootkit and malware detection
  • Log collection and analysis
  • Vulnerability detection (CVE matching)
  • Security configuration assessment against CIS benchmarks
  • Overall security score (A-F grade) in every report
  • SSL/TLS certificate expiry monitoring with 30/14/7-day alerts
  • Asset discovery - we flag any unexpected exposed services
  • Data breach monitoring - we check if your domain appears in known breaches
  • "iSOS Verified" badge for your website
  • Monthly threat briefing - threats relevant to your sector
  • Weekly combined report covering scans and monitoring
  • Monthly summary report with trend analysis
  • Immediate email alerts for Critical/High severity events
  • Priority email support (next business day response)
Get Started
Enterprise

Enterprise

Security doesn't come in a box. Enterprise is for organisations that need more - more endpoints, more applications, more IPs, and reporting that maps directly to your compliance framework. We scope the engagement to your environment and deliver the coverage your business demands.

Ideal for: Organisations needing custom scoping, compliance-ready reporting (Cyber Essentials, ISO 27001, PCI DSS, GDPR), and dedicated support with agreed SLAs.

  • Everything in Citadel, plus:
  • Custom IP, web application, and endpoint allowances
  • Custom scan frequency (daily available)
  • Custom alert rules tuned to your environment
  • Compliance-ready reporting (Cyber Essentials, ISO 27001, PCI DSS, GDPR)
  • Dedicated email support with agreed SLA
  • Quarterly review meetings
  • Scoped and priced based on your requirements
Please Enquire

12-month commitment

Get in Touch

Not Ready for a Subscription?

Three simple options to get started. Each one is a gateway to ongoing protection.

One-Off

Vulnerability Scan

Not sure where you stand? A complete picture of your external security posture. We scan your public-facing systems for known vulnerabilities, misconfigurations, and weaknesses - covering everything from open ports to OWASP Top 10 risks.

£500

One-time fee

  • External vulnerability scan (up to 10 IPs and/or 1 web application)
  • Network scanning: open ports, known CVEs, misconfigurations, SSL/TLS issues
  • Web app scanning: OWASP Top 10 automated checks
  • Industry-standard severity ratings
  • Professional PDF report with executive summary & technical detail
  • Remediation guidance prioritised by risk
  • Delivered within 5 working days
Get Started
One-Off

Retest

You've fixed the vulnerabilities we found - now prove it. A targeted rescan against findings from a previous iSOS assessment to verify remediation was successful.

£290

One-time fee

  • Targeted rescan of previously identified vulnerabilities
  • Updated report: resolved, still-open, and any new findings
  • Comparison view against original assessment
  • Delivered within 3 working days
Get Started

Add-Ons

Available for subscription clients. Scale your coverage as you grow.

Additional IPs

Extra external IPs beyond package allowance (per 5)

+£25
per month

Additional Web Apps

Extra application in scope

+£50
per month

Additional Endpoints

Extra monitored endpoints (per 5)

+£50
per month

Compliance Reporting

Cyber Essentials, ISO 27001, or PCI DSS mapping

+£100
per month

Not Ready for a Subscription?

Three simple options to get started. Each one is a gateway to ongoing protection.

One-Off

Vulnerability Scan

Not sure where you stand? A complete picture of your external security posture. We scan your public-facing systems for known vulnerabilities, misconfigurations, and weaknesses - covering everything from open ports to OWASP Top 10 risks.

£500

One-time fee

  • External vulnerability scan (up to 10 IPs and/or 1 web application)
  • Network scanning: open ports, known CVEs, misconfigurations, SSL/TLS issues
  • Web app scanning: OWASP Top 10 automated checks
  • Industry-standard severity ratings
  • Professional PDF report with executive summary & technical detail
  • Remediation guidance prioritised by risk
  • Delivered within 5 working days
Get Started
One-Off

Retest

You've fixed the vulnerabilities we found - now prove it. A targeted rescan against findings from a previous iSOS assessment to verify remediation was successful.

£290

One-time fee

  • Targeted rescan of previously identified vulnerabilities
  • Updated report: resolved, still-open, and any new findings
  • Comparison view against original assessment
  • Delivered within 3 working days
Get Started

Add-Ons

Available for subscription clients. Scale your coverage as you grow.

Additional IPs

Extra external IPs beyond package allowance (per 5)

+£25
per month

Additional Web Apps

Extra application in scope

+£50
per month

Additional Endpoints

Extra monitored endpoints (per 5)

+£50
per month

Compliance Reporting

Cyber Essentials, ISO 27001, or PCI DSS mapping

+£100
per month

Not Ready for a Subscription?

Three simple options to get started. Each one is a gateway to ongoing protection.

One-Off

Vulnerability Scan

Not sure where you stand? A complete picture of your external security posture. We scan your public-facing systems for known vulnerabilities, misconfigurations, and weaknesses - covering everything from open ports to OWASP Top 10 risks.

£500

One-time fee

  • External vulnerability scan (up to 10 IPs and/or 1 web application)
  • Network scanning: open ports, known CVEs, misconfigurations, SSL/TLS issues
  • Web app scanning: OWASP Top 10 automated checks
  • Industry-standard severity ratings
  • Professional PDF report with executive summary & technical detail
  • Remediation guidance prioritised by risk
  • Delivered within 5 working days
Get Started
One-Off

Retest

You've fixed the vulnerabilities we found - now prove it. A targeted rescan against findings from a previous iSOS assessment to verify remediation was successful.

£290

One-time fee

  • Targeted rescan of previously identified vulnerabilities
  • Updated report: resolved, still-open, and any new findings
  • Comparison view against original assessment
  • Delivered within 3 working days
Get Started

Add-Ons

Available for subscription clients. Scale your coverage as you grow.

Additional IPs

Extra external IPs beyond package allowance (per 5)

+£25
per month

Additional Web Apps

Extra application in scope

+£50
per month

Additional Endpoints

Extra monitored endpoints (per 5)

+£50
per month

Compliance Reporting

Cyber Essentials, ISO 27001, or PCI DSS mapping

+£100
per month

£99

Per month entry point, a no-brainer for any business

67%

Of attacked small businesses report financial difficulties within 6 months

25+

Years of iSOS experience building & protecting systems

3

Simple tiers, scan, scan + monitor, or the full package

£99

Per month entry point, a no-brainer for any business

67%

Of attacked small businesses report financial difficulties within 6 months

25+

Years of iSOS experience building & protecting systems

3

Simple tiers, scan, scan + monitor, or the full package

£99

Per month entry point, a no-brainer for any business

67%

Of attacked small businesses report financial difficulties within 6 months

25+

Years of iSOS experience building & protecting systems

3

Simple tiers, scan, scan + monitor, or the full package

How We Compare

We undercut everyone. Citadel at £449 delivers what Bulletproof charges £999+ for. Our automation-first approach keeps delivery costs low, so the savings are real.

Intruder

Basic

£99/mo

Mid

£229/mo

Premium

£599/mo

No monitoring, no reporting

Bulletproof

Basic

£750/mo

Mid

£999/mo

Premium

£1,499/mo

Platform lock-in

Pentest People

Basic

£449/mo

Mid

£999/mo

Premium

N/A

No endpoint monitoring

UnderDefense

Basic

£500/mo

Mid

N/A

Premium

N/A

Monitoring only, no scanning

Arctic Wolf

Basic

£1,200+/mo

Mid

N/A

Premium

N/A

Enterprise-focused

iSOS

Basic

£99/mo

Mid

£229/mo

Premium

£449/mo

Scanning + monitoring bundled

How We Compare

We undercut everyone. Citadel at £449 delivers what Bulletproof charges £999+ for. Our automation-first approach keeps delivery costs low, so the savings are real.

Provider Basic Mid Premium Notes
Intruder £99/mo £229/mo £599/mo No monitoring, no reporting
Bulletproof £750/mo £999/mo £1,499/mo Platform lock-in
Pentest People £449/mo £999/mo N/A No endpoint monitoring
UnderDefense £500/mo N/A N/A Monitoring only, no scanning
Arctic Wolf £1,200+/mo N/A N/A Enterprise-focused
iSOS £99/mo £229/mo £449/mo Scanning + monitoring bundled

How We Compare

We undercut everyone. Citadel at £449 delivers what Bulletproof charges £999+ for. Our automation-first approach keeps delivery costs low, so the savings are real.

Provider Basic Mid Premium Notes
Intruder £99/month £229/month £599/month No monitoring, no reporting
Bulletproof £750/month £999/month £1,499/month Platform lock-in
Pentest People £449/month £999/month N/A No endpoint monitoring
UnderDefense £500/month N/A N/A Monitoring only, no scanning
Arctic Wolf £1,200+/month N/A N/A Enterprise-focused
iSOS £99/month £229/month £449/month Scanning + monitoring bundled

Built Different. Priced Right

Three Tiers, Dead Simple

Monthly scan. Monthly scan + monitoring. Weekly scan + monitoring. Your client picks in seconds.

Clear Upgrade Path

Shield to Sentinel adds monitoring + CIS benchmarks. Sentinel to Citadel adds weekly frequency + breach monitoring + badge + threat briefing.

Recurring Revenue, Predictable Protection

Monthly subscriptions mean consistent security for you and predictable service from us.

Low Barrier to Entry

£99/month is a no-brainer. £449/month for the full package is still accessible for any SME.

Fully Automated

OpenVAS and Wazuh do the heavy lifting. No manual testing overhead, no tester availability bottlenecks.

Scanning + Monitoring Bundled

Competitors do scanning OR monitoring. We bundle both from Sentinel upwards - at a fraction of the price.

Three Tiers, Dead Simple

Monthly scan. Monthly scan + monitoring. Weekly scan + monitoring. Your client picks in seconds.

Clear Upgrade Path

Shield to Sentinel adds monitoring + CIS benchmarks. Sentinel to Citadel adds weekly frequency + breach monitoring + badge + threat briefing.

Recurring Revenue, Predictable Protection

Monthly subscriptions mean consistent security for you and predictable service from us.

Low Barrier to Entry

£99/month is a no-brainer. £449/month for the full package is still accessible for any SME.

Fully Automated

OpenVAS and Wazuh do the heavy lifting. No manual testing overhead, no tester availability bottlenecks.

Scanning + Monitoring Bundled

Competitors do scanning OR monitoring. We bundle both from Sentinel upwards - at a fraction of the price.

Three Tiers, Dead Simple

Monthly scan. Monthly scan + monitoring. Weekly scan + monitoring. Your client picks in seconds.

Clear Upgrade Path

Shield to Sentinel adds monitoring + CIS benchmarks. Sentinel to Citadel adds weekly frequency + breach monitoring + badge + threat briefing.

Recurring Revenue, Predictable Protection

Monthly subscriptions mean consistent security for you and predictable service from us.

Low Barrier to Entry

£99/month is a no-brainer. £449/month for the full package is still accessible for any SME.

Fully Automated

OpenVAS and Wazuh do the heavy lifting. No manual testing overhead, no tester availability bottlenecks.

Scanning + Monitoring Bundled

Competitors do scanning OR monitoring. We bundle both from Sentinel upwards - at a fraction of the price.

Simple, Straightforward Process

No complexity, no jargon - just clear steps to better security.

01

Discovery Call

We learn about your business, systems, and concerns. No obligation, no jargon.

02

We Test Your Defences

Our team conducts thorough security testing tailored to your infrastructure.

03

Clear Findings

A prioritised report in plain English, showing what matters and what to fix first.

04

We Help You Fix It

Unlike others, we stick around to help remediate issues - not just report them.

01

Discovery Call

We learn about your business, systems, and concerns. No obligation, no jargon.

02

We Test Your Defences

Our team conducts thorough security testing tailored to your infrastructure.

03

Clear Findings

A prioritised report in plain English, showing what matters and what to fix first.

04

We Help You Fix It

Unlike others, we stick around to help remediate issues - not just report them.

01

Discovery Call

We learn about your business, systems, and concerns. No obligation, no jargon.

02

We Test Your Defences

Our team conducts thorough security testing tailored to your infrastructure.

03

Clear Findings

A prioritised report in plain English, showing what matters and what to fix first.

04

We Help You Fix It

Unlike others, we stick around to help remediate issues - not just report them.

Ready to Strengthen Your Security?

Book a free, no-obligation consultation with our team. We'll discuss your concerns, assess your needs, and recommend the right level of protection.

Ready to Strengthen Your Security?

Book a free, no-obligation consultation with our team. We'll discuss your concerns, assess your needs, and recommend the right level of protection.

Ready to Strengthen Your Security?

Book a free, no-obligation consultation with our team. We'll discuss your concerns, assess your needs, and recommend the right level of protection.

Our Services

What We Do

Tech Solutions for Tomorrow

Web Development

Having a website is no longer enough. Your custom site must be easily found, engaging, and deliver a clear message to your audience.

Read More

Claris Databases

With over 400 custom Claris FileMaker databases delivered in 10 years, iSOS understands why organisations invest in new database software.

Read More

macOS & Windows Support

We offer expert macOS and Windows support, ensuring your systems run smoothly and efficiently so you can focus on your business.

Read More

Ready to Elevate Your Digital Presence?

Don't get left behind

Ensure your business stays ahead with cutting-edge digital solutions. Contact us today to keep your company at the forefront of your industry and continue thriving.

Stay Connected with iSOS

At iSOS.com, we specialise in custom software development, web development, and IT consultancy, leveraging Claris FileMaker, Laravel, and AI technologies to create tailored digital solutions that enhance business efficiency and maximise ROI.

Copyright: © 2026 iSOS. All Rights Reserved.

Our Services

What We Do

Tech Solutions for Tomorrow

Web Development

Having a website is no longer enough. Your custom site must be easily found, engaging, and deliver a clear message to your audience.

Read More

Claris Databases

With over 400 custom Claris FileMaker databases delivered in 10 years, iSOS understands why organisations invest in new database software.

Read More

macOS & Windows Support

We offer expert macOS and Windows support, ensuring your systems run smoothly and efficiently so you can focus on your business.

Read More

Ready to Elevate Your Digital Presence?

Don't get left behind

Ensure your business stays ahead with cutting-edge digital solutions. Contact us today to keep your company at the forefront of your industry and continue thriving.

Stay Connected with iSOS

At iSOS.com, we specialise in custom software development, web development, and IT consultancy, leveraging Claris FileMaker, Laravel, and AI technologies to create tailored digital solutions that enhance business efficiency and maximise ROI.

Copyright: © 2026 iSOS. All Rights Reserved.

Our Services

What We Do

Tech Solutions for Tomorrow

Web Development

Having a website is no longer enough. Your custom site must be easily found, engaging, and deliver a clear message to your audience.

Read More

Claris Databases

With over 400 custom Claris FileMaker databases delivered in 10 years, iSOS understands why organisations invest in new database software.

Read More

macOS & Windows Support

We offer expert macOS and Windows support, ensuring your systems run smoothly and efficiently so you can focus on your business.

Read More

Ready to Elevate Your Digital Presence?

Don't get left behind

Ensure your business stays ahead with cutting-edge digital solutions. Contact us today to keep your company at the forefront of your industry and continue thriving.

Stay Connected with iSOS

At iSOS.com, we specialise in custom software development, web development, and IT consultancy, leveraging Claris FileMaker, Laravel, and AI technologies to create tailored digital solutions that enhance business efficiency and maximise ROI.

Copyright: © 2026 iSOS. All Rights Reserved.