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Cyber Security Firms

Best Cyber Security Firms in Boston

Boston is a market shaped by healthcare, life sciences, higher education and a dense software industry, where HIPAA, research data and venture-backed growth set most of the requirements. The firms on this list were checked the same way as every list on the site. Rank one is the best overall, ranks two to four are the best for small business, managed detection and compliance work, and the rest cleared the same checks.

10 firms ranked20 evaluatedChecked
  1. 01Best overall
  2. 02Best for small business
  3. 03Best for managed detection
  4. 04Best for compliance
  5. 05+The rest of the shortlist, ranked on the same checks
Rank 01
Thrive logo

Thrive

Best overall

A New England managed services provider running its own round-the-clock security operations center.

Checked
Why they are on this list
  • Runs a dedicated in-house 24x7x365 security operations center and states plainly that it does not rely on third-party services for it, which is the question most managed detection buyers forget to ask
  • Holds its own attestations rather than only assessing clients against them: SOC 2 Type 2 and SOC 3 in North America, with ISO 27001:2022 and Cyber Essentials Plus on the UK side of the business
  • In operation since 2000 from Concord, Massachusetts, and named the Channel Futures 2023 Managed Security Services Partner of the Year
  • Sells the whole detection stack under its own names, from endpoint and network detection and response through dark web monitoring, autonomous penetration testing and incident response
  • Its stated sector list reads like the Boston economy, covering financial services, life sciences, healthcare, legal, education, government and aerospace and defense
Founded
2000
Attestations
SOC 2 Type II
Sectors
Financial services, Life sciences, Healthcare, Legal, Education, Government
Managed detection and responseEndpoint and network detection and responseVulnerability managementIncident response and remediation$$Concord, MA
Visit website, Thrive
Rank 02
ACS Services logo

ACS Services

Best for small business

A family-owned Massachusetts managed service provider serving small organizations since 1985.

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Why they are on this list
  • States 250 client organizations and more than 15,000 users, which averages to about sixty people per client and is the size band most managed security firms price themselves out of
  • Independent and family owned since 1985, so a forty year track record sits behind a contract a small company signs without a procurement team
  • Runs managed detection and response through a dedicated security operations center rather than reselling an alert feed nobody reads
  • Named to the 2025 MSP 501 ranking, and previously to the Inc. 5000 in 2007 and CRN's fastest-growing managed IT companies in 2006
  • Prepares clients for CMMC, NIST, PCI and HIPAA, which covers most of what a Massachusetts small business is actually asked to show
Founded
1985
Sectors
Biotech, Law firms, Construction, Healthcare, Nonprofits, Professional services
Managed detection and responseManaged IT servicesCloud securityPenetration testing$Brockton, MA
Visit website, ACS Services508-238-6334
Rank 03
Boston Networks logo

Boston Networks

Best for managed detection

A Boston managed security provider selling its operations center and SIEM as named products.

Checked
Why they are on this list
  • Sells a managed security operations center and managed SIEM as their own products with round-the-clock monitoring, rather than folding security into the top tier of an IT support plan
  • Based in Boston itself, so an on-site risk assessment for a downtown firm does not begin with a drive in from Route 128
  • Names a partnership with the Cybersecurity and Infrastructure Security Agency alongside its Sophos and Cisco Meraki credentials, and displays a SOC 2 mark on its own security pages
  • Covers risk assessment, intrusion detection, ransomware protection, penetration testing and awareness training under one provider, which suits a firm with nobody internal running security
Managed security operations centerManaged SIEMIntrusion detection and responseCybersecurity risk assessment$$Boston, MA
Visit website, Boston Networks617-315-8220
Rank 04
Wolf & Company, P.C. logo

Wolf & Company, P.C.

Best for compliance

A Boston CPA firm whose IT assurance practice signs the reports other firms only prepare for.

Checked
Why they are on this list
  • In operation since 1911, which is by a wide margin the longest track record on this list and predates most of the industries it now audits
  • Issues SOC 1, SOC 2, SOC 3 and agreed upon procedures reports as a licensed CPA firm, so the report an enterprise customer is demanding comes from the same firm that ran the readiness work
  • Consultants hold the PCI Qualified Security Assessor credential, which is what allows a firm to sign off on a client environment as compliant with PCI DSS rather than merely advising on it
  • Describes itself as a top-tier HITRUST assessor, the credential the Boston hospital systems and their suppliers increasingly ask vendors for
  • Runs WolfPAC, its own integrated risk management platform for regulated organizations, so the control tracking outlives the engagement that set it up
Founded
1911
Attestations
PCI QSA, HITRUST
Sectors
Financial services, Healthcare, Life sciences, Technology, Manufacturing, Asset management
SOC 1, SOC 2 and SOC 3 reportingIT auditPCI DSS complianceCybersecurity advisory$$$Boston, MA
Visit website, Wolf & Company, P.C.
Rank 05

GraVoc

A North Shore security and IT consultancy with assessor credentials held by named staff.

Checked
  • More than thirty years in business from Peabody, and one of only fourteen companies on the Boston Business Journal's Largest Cybersecurity Firms in Massachusetts list in 2025
  • States more than forty certifications across its staff, including PCI QSA, OSCP, CISSP, CISA and CompTIA PenTest+, so the credentials belong to named people rather than to the logo
  • Named to CRN's MSP 500 Pioneer 250 list for 2026
  • Runs governance and compliance work alongside penetration testing, so a finding from a test lands in the same risk register the auditor is reading
  • Sells white label security work to other providers, which means its testing is bought by firms that could have done it themselves
Attestations
PCI QSA
Sectors
Financial services, Technology, Manufacturing
Governance, risk and complianceIT auditPenetration testingManaged security services$$Peabody, MA
Visit website, GraVoc978-538-9055
Rank 06

Coretelligent

A Needham managed IT and security provider built around regulated mid-sized companies.

Checked
  • Completed a SOC 2 Type 2 examination for 2025, so the firm holding a client's credentials has been audited against the same controls it recommends
  • Founded in 2006 and headquartered in Needham, with sixteen US offices including Boston, so a Massachusetts client is not being served out of a distant hub
  • States 585 customers, concentrated in financial services, healthcare and life sciences, which are the three regulated sectors that dominate this market
  • Sells an outsourced CISO service alongside managed security, which is usually what a mid-sized life sciences company needs before it needs more tooling
Founded
2006
Attestations
SOC 2 Type II
Sectors
Financial services, Healthcare and life sciences, Professional services
Managed security servicesCybersecurity strategy and defenseCompliance solutionsOutsourced CISO services$$Needham, MA
Visit website, Coretelligent
Also on the shortlist
Rank 07

OCD Tech

An IT audit and cybersecurity practice inside a Massachusetts CPA firm, issuing SOC reports.

Website, OCD Tech
Rank 08

iCorps Technologies

A Woburn IT provider with a named CISO and a managed extended detection service.

Website, iCorps Technologies
Rank 09

Netragard

A Massachusetts penetration testing firm that sells testing and advisory work and nothing else.

Website, Netragard
Rank 10

RutterNet

An Andover provider building compliance-driven infrastructure for audited New England businesses.

Website, RutterNet

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How to Choose a Cyber Security Firm in Boston

Boston requirements come from three places: a regulator, a customer, or a grant. A community bank answers to its examiners. A hospital or a device maker answers to HIPAA, and increasingly to a customer asking for HITRUST. A Series B software company answers to an enterprise buyer's SOC 2 questionnaire, and a defense subcontractor on Route 128 answers to CMMC. Each of those is a different firm, so name the requirement before you take the meeting.

Massachusetts adds one requirement everyone shares. Under 201 CMR 17.00, any business holding personal information about a Massachusetts resident needs a written information security program, not a folder of settings. A firm that cannot tell you what goes into a WISP is not ready to sell you security in this state.

For an attest report, check whether the firm can sign one. Readiness work and the report itself are separate engagements, and only a licensed CPA practice issues a SOC 2. Two firms here issue those reports; the rest prepare you for one.

For monitoring, ask who staffs the operations center overnight and whether it belongs to the firm at all. Ask what the analysts are allowed to do at three in the morning without calling you, and what the first response is to phishing defenses failing, since email and identity are still where most engagements start.

Then ask what day one of an incident looks like. Massachusetts puts the Attorney General and the Office of Consumer Affairs and Business Regulation on the notification list, so the steps that follow a breach here carry a filing someone has to own. Settle whether that is your counsel or your security firm before you need the answer.

What the Ranks Mean

Rank one is the best firm overall on the checks in the editorial policy. Ranks two to four are the best firm for one kind of buyer each: a small business, an organization buying managed detection, and an organization facing compliance work. The rest of the shortlist cleared the same checks and is ordered on them. A low rank on this list is not a warning; a firm that failed a check is not on it.

Questions about hiring a cyber security firm

What do cyber security firms in Boston charge?

Pricing splits by what you are buying. Managed detection and response is sold per device or per user per month, and a fifty-person company usually budgets a few thousand dollars a year. A SOC 2 Type 2 report is a scoped engagement, with readiness work and the audit quoted separately, and the audit is usually the larger of the two. Penetration tests are priced by scope. Ask for a range for your exact scope before the discovery call.

Do I need a cyber security firm based in Boston?

For monitoring, no. An operations center watching your endpoints works the same from Concord as from Colorado. For an audit, an incident, or anything involving your labs, offices or staff, local matters. A SOC 2 or HITRUST assessor who can walk into a Cambridge office saves weeks of evidence requests, and after ransomware the forensics team often needs physical access to the machines.

What is a WISP, and does my Massachusetts business need one?

A WISP is a written information security program. Under 201 CMR 17.00, in force since March 2010, anyone who stores or uses personal information about a Massachusetts resident has to develop, implement and maintain one, covering administrative, technical and physical safeguards. It applies to paper records as well as systems, and it applies regardless of company size. Several firms on this list write and audit these as a named service.

What does Massachusetts law require after a data breach?

Chapter 93H requires notice to the Attorney General, the Office of Consumer Affairs and Business Regulation, and the affected residents, as soon as practicable and without unreasonable delay. Since a 2019 amendment, a business whose breach exposed Social Security numbers must arrange at least 18 months of free credit monitoring, or 42 months where the breached organization is a consumer reporting agency, and cannot make that conditional on waiving legal rights.

Which industries drive cyber security demand in Boston?

Healthcare and life sciences first. Hospital systems, medical device makers and biotechs all face HIPAA, and their enterprise customers increasingly ask for HITRUST. Software companies drive the SOC 2 work, because an enterprise buyer will not sign without a report. Banks and credit unions bring examiner-driven IT audit. Universities bring federal grant requirements, and defense subcontractors along Route 128 and I-495 bring CMMC.

What should I ask a Boston cyber security firm before hiring it?

Ask whether the operations center is theirs and who staffs the overnight shift. Ask whether the firm can issue the report you need or only prepare you for it, because those are different engagements and only a licensed CPA practice signs a SOC 2. Ask for the certifying body's register entry behind any credential on the slide. Then ask for a price range for the exact scope you described.

How is this list put together?

Every firm is checked on what it actually does, the attestations that can be verified, its track record, a response test where we contact it as a prospective client, and how clear it is about scope and price. Rank one is the best firm overall. Ranks two to four are the best for small business, managed detection and compliance. The editorial policy sets out each check and what fails it.

Ranked lists in other cities

Each metro is researched on its own. A firm that leads nationally does not automatically appear on a city list, and most city leaders are not national names.

The national ranking