---
title: "Alliance Risk vs Marsh Professional Liability (E&O) Insurance"
description: "Some Marsh-placed professional liability policies cover privacy violations and computer security breaches; Alliance Risk's policy explicitly excludes cyber incidents."
canonical: "https://spot.insure/compare/alliance-risk-vs-marsh/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-23"
---

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# Alliance Risk vs Marsh Professional Liability (E&O) Insurance

Some Marsh-placed professional liability policies cover privacy violations and computer security breaches; Alliance Risk's policy explicitly excludes cyber incidents.

## Research Scope and Use

Use this comparison to evaluate Alliance Risk and Marsh for Professional Liability (E&O) Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote.

## Summary

Marsh says many of its professional liability placements also cover privacy violations and computer security breaches, while Alliance Risk's policy excludes cyber incidents and directs buyers to a separate cyber liability line. [8](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance")

## What Is Alliance Risk?

Alliance Risk describes itself as an independent commercial insurance brokerage serving complex businesses, including technology startups. Its offering includes technology E&O placement and review of existing policies. [1](https://joinalliancerisk.com/about-us/ "About Us") [2](https://joinalliancerisk.com/technology-errors-omissions-insurance-tech-eo/ "Tech E&O Insurance")

[Alliance Risk profile](https://spot.insure/insurance-providers/alliance-risk)

## What Is Marsh?

Marsh is a global insurance broker and risk advisor. In the United States it places coverage through core Marsh teams and through Marsh McLennan Agency for many middle-market buyers, including technology, cyber, property, casualty and benefits programs. [4](https://www.marsh.com/en/home.html "Marsh | Leader in risk, strategy, people, and investments") [5](https://www.marsh.com/content/dam/marsh/Documents/PDF/US-en/us-client-compensation-guide.pdf "Compensation guide for US clients") [6](https://www.marsh.com/en/services/marsh-mclennan-agency.html "Marsh McLennan Agency (MMA)") [7](https://www.marsh.com/en/industries/technology.html "Technology | Insurance Broking & Risk Management")

[Marsh profile](https://spot.insure/insurance-providers/marsh)

## What Is Professional Errors and Omissions (E&O) Insurance?

Professional errors and omissions (E&O) insurance, also called professional liability insurance, addresses claims that professional services or advice caused a client financial loss. What's covered depends on the services actually scheduled in the policy, not the product label alone. [10](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [11](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [12](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [13](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance")

## Key Differences in Professional Liability (E&O) Insurance

### Where Cyber Exposure Sits

Marsh says many professional liability policies it places also cover privacy violations and computer security breaches alongside the core error-and-omission trigger:

Marsh says professional liability coverage can protect a company against liability and defense costs from a claim alleging an error, omission or negligence in performing professional services, and that many policies also cover privacy violations and computer security breaches. [8](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") (Evidence: Company-reported; scope: Marsh professional liability page opening description; illustrative policy description, not a specific policy form..)

Alliance Risk draws that line differently, listing cyber incidents as an exclusion from its professional liability policy and pointing buyers to a separate cyber liability line instead. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance")

### Who Each One Is Built to Serve

Marsh names banking and broker-dealers, insurance companies and asset managers, and merchant banking and venture capital among the specialized clients its professional liability experts serve. Alliance Risk's list runs toward smaller professional-services firms: consultants, accountants and tax professionals, and marketing and PR agencies. [8](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance")

### Depth of the Risk-Assessment Team

Marsh says it employs attorneys, economists and actuaries alongside coverage specialists to assess a client's professional liability exposure. Alliance Risk describes a narrower service set: industry-specific risk reviews, claims-trend analysis and review of client contracts. [8](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance")

## What to Confirm in Professional Liability (E&O) Insurance Quotes

- Ask Marsh which insurer would underwrite your specific professional liability placement, since its reviewed pages name none. [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Expert Executive and Professional Liability Insurance")
- Ask Alliance Risk the same question, since its page also names no carrier. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance")
- If cyber exposure matters to your business, confirm whether Marsh's placement actually includes privacy and computer-security cover or requires a separate policy. [8](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability")
- Ask Alliance Risk for its actual quoted limit, since its page publishes only illustrative cost ranges by firm size. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance")

## Offering Details

| Criteria | Alliance Risk Professional Liability Insurance | Marsh Professional Liability Insurance Brokerage |
| --- | --- | --- |
| Role in This Line | Alliance Risk places professional liability (errors and omissions, or E&O) coverage as a broker, saying it backs placements with risk-specific underwriting input and carrier partnerships rather than underwriting the policy itself. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page..) | Marsh's financial and professional liability practice places professional liability (errors and omissions) insurance; MMA also places E&O coverage within its executive and professional liability practice for middle-market clients. [8](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Expert Executive and Professional Liability Insurance") (Evidence: Company-reported; scope: Marsh professional liability page and MMA executive and professional liability page..) |
| Issuing Insurer | The reviewed professional liability page does not name the insurer that would issue a policy; it refers generally to 'strong carrier partnerships' without identifying a specific carrier. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Not publicly disclosed; scope: Professional liability product page as read on 2026-09-23..) | The reviewed pages do not name a specific professional liability insurer. [8](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") [9](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Expert Executive and Professional Liability Insurance") (Evidence: Not publicly disclosed; scope: Marsh professional liability page and MMA executive and professional liability page as read on 2026-09-23..) |
| Who It’s For | Alliance Risk targets professional liability at consultants and advisory firms, accountants and tax professionals, architects and engineers, real estate and insurance agents and brokers, marketing and PR agencies, IT and technology consultants, healthcare providers, and financial planners and investment advisors. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page; eligibility for a particular company depends on underwriting..) | Marsh names specialized industries its professional liability experts serve, including banking and broker/dealers, insurance companies and asset managers, merchant banking and venture capital, accountants, attorneys, architects and engineers, media and entertainment, technology, and healthcare and biotechnology. [8](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") (Evidence: Company-reported; scope: Marsh professional liability page, What We Offer section..) |
| Coverage Features | Alliance Risk lists negligent acts or omissions, breach of contract, misrepresentation, and missed deadlines as typically covered, and says bodily injury or property damage, intentional wrongdoing or fraud, employment disputes, cyber incidents, and prior known claims are excluded and belong to other lines such as general liability, EPLI or cyber liability. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page; coverage and exclusions described in general terms, subject to the policy as issued..) | Marsh says professional liability coverage can protect a company against liability and defense costs from a claim alleging an error, omission or negligence in performing professional services, and that many policies also cover privacy violations and computer security breaches. [8](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") (Evidence: Company-reported; scope: Marsh professional liability page opening description; illustrative policy description, not a specific policy form..) |
| Limits and Retentions | The reviewed professional liability page gives cost ranges by firm size (for example, solo practitioners at $500-$3,000 a year up to mid-sized to large firms at $10,000-$50,000-plus) but does not publish specific coverage limits, retentions or deductible amounts for this line. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Not found in reviewed sources; scope: Professional liability product page as read on 2026-09-23; cost figures are illustrative premium estimates, not published limits..) | Not described in the reviewed sources. |
| Risk Services | Alliance Risk describes its approach to professional liability as including industry-specific risk reviews, claims-trend analysis, customized policy language, review of client contracts to limit personal exposure, and expertise structuring claims-made policies including tail coverage, prior acts and retroactive dates. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page, Our Approach to Professional Liability and The Alliance Risk Difference sections..) | Marsh says it employs attorneys, economists and actuaries alongside coverage specialists to assess a client's professional liability exposure from multiple angles, given the complexity of these risks. [8](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") (Evidence: Company-reported; scope: Marsh professional liability page..) |
| How to Apply | The professional liability page's only application route is a generic 'Get a quote' request; it does not list the specific submission information Alliance Risk asks for on this line, unlike its D&O, EPLI and fiduciary product pages. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Not found in reviewed sources; scope: Professional liability product page as read on 2026-09-23..) | Not described in the reviewed sources. |
| Claims Support | Alliance Risk says professional liability clients get access to a legal network and claims experts who understand the client's industry, providing a defense strategy if a claim arises. [3](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page, The Alliance Risk Difference section..) | Not described in the reviewed sources. |

## Full Comparison

- [Alliance Risk vs Marsh](https://spot.insure/compare/alliance-risk-vs-marsh): all coverage lines, business roles, service and claims.
- [What Is Professional Errors and Omissions (E&O) Insurance?](https://spot.insure/coverage/professional-errors-omissions): Professional E&O insurance addresses claims that a mistake in your advice or services caused a client financial loss.
- [Alliance Risk vs Marsh Builders Risk Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/builders-risk)
- [Alliance Risk vs Marsh Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/commercial-property)
- [Alliance Risk vs Marsh Crime Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/crime)
- [Alliance Risk vs Marsh Cyber Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/cyber)
- [Alliance Risk vs Marsh D&O Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/directors-officers)
- [Alliance Risk vs Marsh Employment Practices Liability Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/employment-practices)
- [Alliance Risk vs Marsh Equipment Breakdown Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/equipment-breakdown)
- [Alliance Risk vs Marsh Fiduciary Liability Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/fiduciary)
- [Alliance Risk vs Marsh Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/management-liability)
- [Alliance Risk vs Marsh Media Liability Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/media)
- [Alliance Risk vs Marsh Tech E&O Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/technology-errors-omissions)
- [Alliance Risk vs Marsh Workers’ Compensation Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/workers-compensation)
- [Alliance Risk vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-at-bay/professional-errors-omissions)
- [Alliance Risk vs Beazley Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-beazley/professional-errors-omissions)
- [Alliance Risk vs CFC Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-cfc/professional-errors-omissions)
- [Alliance Risk vs Chubb Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-chubb/professional-errors-omissions)
- [Alliance Risk vs Coalition Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-coalition/professional-errors-omissions)
- [Alliance Risk vs Corgi Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-corgi/professional-errors-omissions)

## Sources

### Alliance Risk

1. [About Us](https://joinalliancerisk.com/about-us/). Alliance Risk; Our Story. Accessed 2026-09-16.
2. [Tech E&O Insurance](https://joinalliancerisk.com/technology-errors-omissions-insurance-tech-eo/). Alliance Risk; Opening placement description; Get Your Tech E&O Risk Review; What We Need for Your Quote; Policy Review. Accessed 2026-09-16.
3. [Professional Liability Insurance](https://joinalliancerisk.com/professional-liability-business-insurance/). Alliance Risk; Professional Liability Insurance That Safeguards Your Expertise; Our Approach to Professional Liability; The Alliance Risk Difference; What Is Professional Liability Insurance?; What Does/Doesn't Professional Liability Insurance Cover?; How Much Professional Liability Insurance Cost?. Accessed 2026-09-23.

### Marsh

4. [Marsh | Leader in risk, strategy, people, and investments](https://www.marsh.com/en/home.html). Marsh; Hero and capability tiles; FAQ: What does Marsh do?; industries served; Is Marsh the same as Marsh McLennan? January 2026 brand change. Accessed 2026-09-16.
5. [Compensation guide for US clients](https://www.marsh.com/content/dam/marsh/Documents/PDF/US-en/us-client-compensation-guide.pdf). Marsh; US broking segments; broker role; retail commissions, client fees, wholesale, insurer consulting, contingent and supplemental commissions; Marsh LLC and Marsh USA LLC; page 3: broker role and Marsh & McLennan Agency segment; page 7: copyright © 2024 Marsh LLC. Accessed 2026-09-16.
6. [Marsh McLennan Agency (MMA)](https://www.marsh.com/en/services/marsh-mclennan-agency.html). Marsh; Middle-market US organizations; wholly-owned subsidiary; business insurance, employee health and benefits, retirement, private client. Accessed 2026-09-16.
7. [Technology | Insurance Broking & Risk Management](https://www.marsh.com/en/industries/technology.html). Marsh; Opening Technology Practice description; practice links including data center insurance, fintech and Stratus; Talk to us. Accessed 2026-09-16.
8. [Professional liability](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html). Marsh; Opening description; What We Offer: specialized industries served (banking, insurance/asset managers, merchant banking/venture capital, accountants/attorneys/architects/engineers, media/communications/entertainment, technology, healthcare/biotechnology). Accessed 2026-09-23.
9. [Expert Executive and Professional Liability Insurance](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html). Marsh McLennan Agency; Our policies include D&O, E&O, EPL, commercial crime/fidelity, network security privacy risk/cyber, fiduciary, media liability, IP, architects and engineers, lawyers professional, and kidnap and ransom. Accessed 2026-09-23.

### Professional Liability (E&O) Insurance Guide

10. [FAQ: Professional liability insurance](https://www.tdi.texas.gov/commercial/pl-faq.html). Texas Department of Insurance; What’s professional liability coverage?; What types of damages…; What’s general liability insurance?; Do I need professional liability… if I have general liability…?; Is professional liability insurance required?; Can a client require…?; What’s the difference between occurrence policies and claims-made policies. Accessed 2026-09-16.
11. [Professional liability insurance](https://www.iii.org/article/professional-liability-insurance). Insurance Information Institute; Opening paragraphs (professional services/advice and E&O name); Claims not covered by general liability; What types of businesses need professional liability insurance?; What’s covered… and what’s not (claims-made versus occurrence, defense and judgments, non-financial/intentional limits, BOP/in-home exclusion). Accessed 2026-09-16.
12. [Get business insurance](https://www.sba.gov/counseling/launch-your-business/#business-insurance). U.S. Small Business Administration; Six common types of business insurance table. Accessed 2026-09-16.
13. [Professional Liability – US Direct Errors and Omissions Insurance](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf). Hiscox Inc. specimen; About this Policy / Coverage for Claims Made Against You; I.A Insuring Agreement; I.B Defense; I.C Settlement; II.A Notice of Claims; II.C Optional Extended Reporting Period; III.A, III.K, III.M, III.R, III.S Exclusions; IV.A–B Limits and Deductible; VI.O Professional Services; VI.U Wrongful Act. Accessed 2026-09-16.

Updated 2026-09-23. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source.

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