How to Reduce Your Cyber Insurance Premiums with Managed IT

Cyber insurance premiums for UK businesses have increased by approximately 40% since 2023, according to Howden’s 2025 Cyber Insurance Market Report. For financial services firms, the increases have been even steeper — some have seen premiums double while coverage limits have tightened. But premiums are not set arbitrarily. Insurers evaluate specific technical controls, and businesses with strong cyber hygiene demonstrably pay less.

Here is exactly what insurers look for and how managed IT services can reduce your premiums.

Why Premiums Have Risen

The maths is straightforward. The average cost of a UK data breach reached GBP 3.58 million in 2025 (IBM Cost of a Data Breach Report), and ransomware claims frequency increased 18% year-over-year. Insurers have responded by tightening underwriting requirements and increasing premiums for businesses that cannot demonstrate robust controls.

The positive side of this equation is that businesses with strong security postures are being rewarded. The gap between premiums for well-protected and poorly-protected businesses has widened, creating a genuine financial incentive to invest in security.

The Controls That Insurers Evaluate

Every cyber insurer has their own questionnaire, but the core controls they assess are remarkably consistent. Here are the ones that have the most impact on your premium:

Multi-Factor Authentication (MFA)

This is the single most impactful control. Insurers now routinely decline coverage or add exclusions for businesses without MFA on email, VPN, remote desktop, and administrative accounts. Some insurers have reported that MFA alone reduces the probability of a successful account compromise claim by over 90%.

What good looks like: MFA enabled on all cloud services, VPN connections, and privileged accounts, using authenticator apps or hardware tokens rather than SMS.

Endpoint Detection and Response (EDR)

Traditional antivirus is no longer sufficient for most underwriters. They want to see EDR solutions that provide behavioural analysis, automated threat containment, and forensic investigation capabilities. Products like Microsoft Defender for Endpoint, CrowdStrike, or SentinelOne meet this requirement.

Premium impact: Businesses with EDR typically see 10-20% lower premiums compared to those running only signature-based antivirus.

Backup Strategy and Testing

Insurers want to see the 3-2-1 rule implemented: three copies of data, on two different media, with one stored offsite or in an immutable cloud repository. Critically, they also want evidence that backups are tested regularly. An untested backup is worthless in an underwriting context.

What good looks like: Automated daily backups with offsite/cloud replication, immutable backup copies that cannot be encrypted by ransomware, and documented quarterly restoration tests.

Patch Management

Unpatched systems are the second most common attack vector after compromised credentials. Insurers assess your patch cadence — specifically, how quickly critical and high-severity vulnerabilities are remediated after patches are released.

Benchmark: Patching critical vulnerabilities within 14 days is the most common insurer expectation. Businesses that consistently patch within 72 hours of critical CVEs may receive preferential terms.

Email Security

Phishing remains the most common initial access vector. Insurers look for:

• Advanced email filtering beyond native Microsoft 365 protections
• DMARC, DKIM, and SPF records properly configured
• Regular phishing awareness training with simulated phishing exercises
• Policies preventing auto-forwarding of email to external addresses

Privileged Access Management

Who has admin rights, and how are those rights controlled? Insurers increasingly ask about:

• Separation of admin and day-to-day user accounts
• Just-in-time access for administrative tasks
• Regular access reviews and removal of unnecessary privileges
• Monitoring of privileged account activity

Incident Response Plan

Having a documented and tested incident response plan demonstrates operational maturity. Insurers want to see that you know what to do when — not if — an incident occurs, including communication procedures, containment steps, and recovery timelines.

How to Use These Controls in Your Renewal

Before Your Renewal

1. Audit your controls against the list above and document evidence for each one.
2. Implement quick wins — enabling MFA, configuring DMARC, and documenting your incident response plan can all be done within weeks.
3. Request your insurer’s questionnaire early so you know exactly what they will ask.
4. Prepare supporting documentation — Cyber Essentials Plus certificates, penetration test reports, and security awareness training completion records all strengthen your position.

During the Renewal Process

5. Be specific in your answers. Instead of “we have antivirus,” say “we run Microsoft Defender for Endpoint with automated investigation and response enabled across all endpoints, managed by our MSP with 24/7 monitoring.”
6. Highlight improvements made since your last renewal. Insurers reward trajectory, not just current state.
7. Shop the market. Different insurers weigh different controls differently. A broker who specialises in cyber insurance can identify the carrier whose underwriting model best matches your security profile.

The ROI Calculation

Consider a 30-person financial services firm paying GBP 15,000 annually for cyber insurance. Implementing the controls above through a managed IT provider might cost GBP 50-70 per user per month. But the combination of a 20-30% premium reduction (GBP 3,000-4,500 saved annually) plus the dramatically reduced risk of an actual incident makes the investment straightforward.

The firms that pay the least for cyber insurance are the same firms that are least likely to need it. That is not a coincidence.

How Nerdster Helps

Our managed IT service includes every control that cyber insurers evaluate — MFA enforcement, EDR deployment, tested backups, patch management, email security, and documented incident response. We also work directly with our clients’ brokers during renewal season to ensure questionnaires are answered accurately and favourably.

Book a free IT assessment with Nerdster to understand your current security posture and identify the specific improvements that will have the greatest impact on your next cyber insurance renewal.