Alternatives · Updated 9 November 2026

Synack alternatives for penetration testing

The main Synack alternatives are ioSENTRIX, Cobalt, HackerOne, Bugcrowd and Bishop Fox. Cobalt, HackerOne and Bugcrowd draw on researcher communities; Bishop Fox is a firm whose own experts run the work. ioSENTRIX's own testers run scoped pentests with free retests and audit support, and CTEM adds continuous testing between them.

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Penetration Testing Solution of the Year2026 CyberSecurity Breakthrough Awards

4.9 / 512 reviews on G2

5.0 / 5on Clutch

CREST-accreditedPenetration testing

Compared

5 alternatives to Synack

Ways to buy

Researcher communities, automated platforms or expert firms

Based on

Each company's public pages, checked 9 November 2026

Disclosure

This page is written by ioSENTRIX, one of the five

At a glance

The five Synack alternatives compared

How each one delivers testing and who it suits, in one table.

Synack alternatives compared by delivery model and best fit, based on public information checked 9 November 2026
Provider	How testing is delivered	Best for	Details
ioSENTRIX	Expert firm; its own testers only. Pentests on a PTaaS subscription or credits, plus CTEM between tests	Audit-ready pentests with free retests, continuous SAST, DAST, SCA and EASM, and specialist targets such as ICS/OT, POS, embedded and AI	See #1
Cobalt	Researcher community. PTaaS platform on a credit-based subscription, plus Cobalt Autonomous Pentest	Teams that want application pentests started quickly from a platform	See #2
HackerOne	Researcher community. PTaaS platform (H1 Pentest, H1 Agentic Pentest) alongside bug bounty	Teams that want pentests and a bug bounty programme on one platform	See #3
Bugcrowd	Researcher community. Tiered PTaaS (Standard, Plus, Max) on the Bugcrowd Platform, alongside bug bounty	Teams that want crowdsourced pentests and bug bounty on one platform	See #4
Bishop Fox	Expert firm. Expert-led testing plus the Cosmos continuous offensive security platform	Large external estates that want continuous attack surface testing	See #5
Synack (for reference)	Researcher community. Synack runs on-demand, periodic and continuous testing through its PTaaS platform, combining its Sara agentic AI with the Synack Red Team community of vetted researchers.

Why teams compare

Why teams look at Synack alternatives

These are the reasons buyers most often give us when they compare providers. They are not a judgement of Synack's service.

One team, not a crowd

Some teams want the same testers each time, who already know their product.

A report for the auditor

Compliance-driven teams need a report their SOC 2, ISO 27001 or PCI DSS auditor accepts first time.

A different way to buy

Some prefer a fixed price per scope; others prefer credits or a subscription.

More than a pentest

Some want continuous code, app and attack surface testing between pentests, from the same provider.

The alternatives

Five Synack alternatives, in detail

We're ioSENTRIX, so we've put ourselves first. What we say about the others comes from their own websites, with sources at the bottom of the page.

Expert firmPTaaS subscription or creditsCTEM

ioSENTRIX

ioSENTRIX's own testers, never a crowd or freelancers, run scoped penetration tests on web, API, mobile, cloud, network, thick client, IoT and embedded, POS, ICS/OT and AI applications. Every fix is retested for free, the price is fixed unless the scope changes, and we work with your auditor until the report is accepted.

Between tests, continuous threat exposure management (CTEM) keeps watching: continuous SAST, DAST, SCA and SBOM, EASM and CAASM for your attack surface, and network security testing, all from the same team.

SASTDASTSCASBOMEASMCAASMNetwork securityPentest

Penetration Testing Solution of the Year 2026 · 4.9/5 on G2 · 5.0/5 on Clutch

Best for

Compliance-driven and product teams that want audit-ready reports, a fixed price, continuous testing and specialist coverage.

ioSENTRIX vs Synack

The other four, in brief

Each card opens our own head-to-head comparison.

02CobaltResearcher communityBest for: teams that want application pentests started quickly from a platformioSENTRIX vs Cobalt 03HackerOneResearcher communityBest for: teams that want pentests and a bug bounty programme on one platformioSENTRIX vs HackerOne 04BugcrowdResearcher communityBest for: teams that want crowdsourced pentests and bug bounty on one platformioSENTRIX vs Bugcrowd 05Bishop FoxExpert firmBest for: large external estates that want continuous attack surface testingioSENTRIX vs Bishop Fox

Awards and reviews

Why teams pick ioSENTRIX

2026 CyberSecurity Breakthrough Awards: Penetration Testing Solution of the Year

Award · 2026Penetration Testing Solution of the YearCyberSecurity Breakthrough Awards

G2 · High Performer, Fall 20264.9 / 5from 12 reviews

Clutch · Premier Verified5.0 / 5Clutch profile

AccreditationCREST-accreditedPenetration testing

ISO 27001 certified · SOC 2 Type 2 attested · report available from our trust center

★★★★★

Unlike other providers, Omair and his team truly dive deep into our infrastructure, delivering findings that go well beyond the surface level.

Jesus B.Cybersecurity Manager, BankingVerified G2 review

★★★★★

We were impressed with ioSENTRIX's ability to independently validate the security of our customer-facing product.

Zeehasham R.Data Scientist, Security Operations · InsuranceVerified Clutch review

★★★★★

The team at ioSENTRIX is professional and highly skilled at their craft.

Awwab A.SVP, Chief Information Security OfficerVerified G2 review

Buyer’s checklist

How to choose a penetration testing provider

Ask every provider on this page these eight questions, ioSENTRIX included.

01
Who will test, and will it be the same people next time?
A named team learns your product. A rotating group brings fresh eyes.
02
Is retesting included?
Ask how many rounds, and whether retests cost extra or use credits.
03
Will the report satisfy my auditor?
Name your framework (SOC 2, ISO 27001, PCI DSS, HIPAA) and ask for a sample report.
04
How is the price set, and what changes it?
Fixed per scope, credits or subscription: know what moves the number.
05
Can you test my specialist targets?
Thick clients, devices, POS, ICS/OT and AI features need specific skills.
06
What happens between pentests?
Ask whether code, apps and your attack surface are tested continuously.
07
What accreditations does the firm hold?
Look for company-level accreditation such as CREST, and ISO 27001.
08
How fast can testing start?
Ask for the first available date for your scope, not a general promise.

FAQ

Frequently asked questions

Short answers for teams looking at alternatives to Synack.

Ask us something else

What are the main Synack alternatives?

The main alternatives are ioSENTRIX, Cobalt, HackerOne, Bugcrowd and Bishop Fox. Cobalt, HackerOne and Bugcrowd draw on researcher communities; Bishop Fox is a firm whose own experts run the work.

What kind of provider is Synack?

Synack runs on-demand, periodic and continuous testing through its PTaaS platform, combining its Sara agentic AI with the Synack Red Team community of vetted researchers.

What is the difference between Synack and ioSENTRIX?

Synack draws testers from a researcher community. At ioSENTRIX, our own testers run every engagement, with free retests, a fixed price and support through your audit, and CTEM adds continuous SAST, DAST, SCA, SBOM and attack surface monitoring between tests.

Which Synack alternative is best for compliance testing?

For SOC 2, ISO 27001, PCI DSS or HIPAA evidence, look for a provider that retests fixes and works with your auditor until the report is accepted. ioSENTRIX commits to both.

Does ioSENTRIX test continuously between pentests?

Yes. CTEM covers continuous SAST, DAST, SCA and SBOM, EASM, CAASM, network security and recurring pentests, run by the same ioSENTRIX team.

Is ioSENTRIX CREST accredited?

Yes. ioSENTRIX is CREST-accredited for penetration testing, ISO 27001 certified and SOC 2 Type 2 attested.

Method

How we compared

We compared what each company publishes on its own website, checked on 9 November 2026. We quote competitors in their own words. Where something isn't published, we say so rather than guess.

Synack, Cobalt, HackerOne, Bugcrowd, Bishop Fox and their product names are trademarks of their owners. ioSENTRIX isn't affiliated with any of them. If anything here is out of date, tell us and we'll correct it.

Last updated 9 November 2026

Sources

1. Synack, Why Synack page, synack.com/why-synack, checked 9 November 2026
2. Cobalt, Agentic PTaaS page, cobalt.io/platform/ptaas, checked 9 November 2026
3. HackerOne, Pentest product page, hackerone.com/product/pentest, checked 9 November 2026
4. Bugcrowd, Pen Test as a Service page, bugcrowd.com/products/pen-test-as-a-service, checked 9 November 2026
5. Bishop Fox, Attack Surface Testing page, bishopfox.com/services/continuous-threat-exposure-management/attack-surface-testing, checked 9 November 2026
6. G2 and Clutch, ioSENTRIX reviews, checked 9 November 2026
7. CyberSecurity Breakthrough Awards 2026 winners, GlobeNewswire, 8 October 2026

Synack alternatives for penetration testing

The five Synack alternatives compared

Why teams look at Synack alternatives

One team, not a crowd

A report for the auditor

A different way to buy

More than a pentest

Five Synack alternatives, in detail

ioSENTRIX

The other four, in brief

Why teams pick ioSENTRIX

How to choose a penetration testing provider

Who will test, and will it be the same people next time?

Is retesting included?

Will the report satisfy my auditor?

How is the price set, and what changes it?

Can you test my specialist targets?

What happens between pentests?

What accreditations does the firm hold?

How fast can testing start?

Frequently asked questions

What are the main Synack alternatives?

What kind of provider is Synack?

What is the difference between Synack and ioSENTRIX?

Which Synack alternative is best for compliance testing?

Does ioSENTRIX test continuously between pentests?

Is ioSENTRIX CREST accredited?

How we compared

Head-to-head comparisons

How to get started