The best pentest company in Brazil depends on your situation — there's no one-size-fits-all answer.

The most relevant Brazilian pentest companies in 2026 are:

1. No Vuln
2. Tempest Security Intelligence
3. Cipher
4. Módulo Security
5. HackerSec
6. IntrusionCyber
7. LC Sec
8. Conviso
9. Protelium
10. Clavis Segurança da Informação
11. Hakai Security
12. Tenchi Security

Beyond these, the Big Four (Deloitte, EY, KPMG, PwC) and BDO offer pentesting, usually as a module of a larger audit. International platforms (Synack, Cobalt, BugSplat) run a global PTaaS model. Top bug bounty researchers also offer their services directly.

A breakdown of each one — industry focus, positioning, price range, differentiators and when it makes sense — is in the full comparison: 10 pentest companies in Brazil in 2026.

1. The researchers' adversarial track record — public findings in international bug bounty programs (U.S. Department of Defense, eToro, Bitso, Hostinger); published CVEs under their name; CTF wins; talks at DEF CON, Black Hat, H2HC or BSidesSP. Without a public track record, it's hard to tell real adversarial consulting from a scanner sold as a pentest.
2. A matching industry focus — fintech (BACEN Resolution 4,893 (CMN 4,893), the Central Bank of Brazil's cybersecurity rule; Pix, Brazil's instant payment system; Open Finance), B2B SaaS (multi-tenant, SSO, BOLA), e-commerce (checkout, anti-bot, inventory race conditions), healthtech (Art. 11 of the LGPD, Brazil's data protection law; HL7/FHIR) and marketplaces (payment splits, anti-fraud, cross-seller) each have different risk patterns. A company that “does everything” usually does nothing particularly well in any specific industry.
3. Output formatted for your auditor — SOC 2 Type II (Common Criteria CC7.1), ISO 27001:2022 (Annex A 8.29 and 8.8), BACEN Resolution 4,893 and BCB Resolution 85, PCI DSS 4.0 (Requirement 11.4), LGPD Art. 46. An executive report + technical report + a formal compliance statement.
4. Retest included — in 2026, retesting is a commodity. You fix the issues, and the company validates the fixes at no extra cost, within the contracted window (30 to 90 days). Charging separately for a retest is a red flag.
5. Direct support from the researcher — do you talk to the person who found the bug, or only to an account manager? At an elite firm, the channel is direct. That makes a practical difference for findings that need technical discussion to be prioritized and fixed.
6. Mutual NDA, NF-e invoicing, an active CNPJ — a serious operation has its own legal structure: a mutual NDA (they'll sign your template if you prefer), invoicing with NF-e (Brazil's electronic invoice), an active CNPJ (Brazilian company registration) with the Receita Federal (Brazil's federal tax authority) and a service agreement with liability clauses.

For fintechs / digital banks

• No Vuln — early-stage fintechs / authorized payment institutions / Series A, focused on deep manual pentesting + BACEN Resolution 4,893
• Tempest Security Intelligence — large digital banks, critical infrastructure, enterprise Open Finance
• Cipher — enterprise operations that need integrated SOC + pentesting (via Prosegur)
• IntrusionCyber — advanced red teaming for established fintechs

For B2B SaaS / startups / scale-ups

• No Vuln — deep manual pentesting with an international bug bounty track record, recurring and sprint-aligned
• HackerSec — continuous PTaaS model with a platform and AI
• Conviso — continuous AppSec integrated into the development pipeline
• LC Sec — an affordable first pentest for early-stage startups

For marketplaces / e-commerce

• No Vuln — payment splits, isolation between sellers, anti-fraud, cross-seller BOLA, inventory race conditions
• Tempest — enterprise marketplaces (Mercado Livre scale)

For payments / Pix / gateways

• No Vuln — gateways with full Pix + application-level PCI DSS + refund race conditions + webhook tampering
• Tempest — BACEN-regulated Level 1 acquirers

For healthtech / digital clinics / telemedicine

• No Vuln — telemedicine + HL7/FHIR + LGPD Art. 11 (sensitive data) + ICP-Brasil (Brazil's digital certificate infrastructure)
• Conviso — digital health plan operators with a mature SDLC

For PTaaS / modern continuous pentesting

• No Vuln — sprint-aligned continuous pentesting, proprietary technology integrated with frontier AI models and led by researchers, direct contact with the researcher, retest included, a fit for fast-changing SaaS
• HackerSec — platform-based PTaaS with a dashboard, AI-first
• Conviso — platform-based continuous AppSec
• LC Sec — affordable continuous pentesting for SMBs and startups
• Synack / Cobalt — international PTaaS

For advanced red teaming / OT-SCADA

• Tempest — multidisciplinary enterprise red team
• IntrusionCyber — adversary emulation, industrial environments

For companies that need pentesting tied to a formal external audit

• Big Four (Deloitte, EY, KPMG, PwC) — when the pentest needs to sit inside a SOX, ISO or financial audit
• Módulo Security — GRC + pentesting from the same vendor

For SMBs / early-stage startups on a tight budget

• No Vuln — Sprint package (25h) from US$ 3,750
• LC Sec — affordable pricing, a fit for SMBs
• Top bug bounty freelancer — no registered company (CNPJ), but real depth

The Brazilian pentest market in 2026 is clearly split into two camps:

• Traditional enterprise consultancies — Tempest, Cipher, Módulo, IntrusionCyber, Big Four. Model: one-off pentest, defined scope, formal report, enterprise clients. Strong in compliance (BACEN, ISO, SOC 2, PCI DSS), multidisciplinary red teaming and critical environments.
• PTaaS / modern continuous pentesting — No Vuln, HackerSec, Conviso, LC Sec (plus international platforms such as Synack and Cobalt). Model: sprint-aligned monthly subscription, AI combined with human validation, retest included, fast onboarding, direct contact with the researcher. A fit for SaaS that changes every week, early-stage fintechs, e-commerce, marketplaces and growing startups.

Many Brazilian companies are moving to the PTaaS model because an annual pentest is no longer enough — SaaS changes every sprint, and regulatory compliance (LGPD, SOC 2, BACEN) keeps getting stricter. No Vuln has operated on this modern model from day one: proprietary technology integrated with frontier AI models, led by researchers, with human validation; recurring, sprint-aligned engagements; direct contact with the researcher (no account manager); retest included; and fast onboarding with a mutual NDA within 24h.

No Vuln's specific differentiator within the PTaaS group is its researchers' background in international bug bounty programs (U.S. Department of Defense, eToro, Bitso, Hostinger) — delivering the adversarial depth usually associated with traditional enterprise consulting, now within an agile, accessible PTaaS model for B2B SaaS, fintechs, marketplaces, e-commerce and startups in Brazil.

• Sells a “pentest” but the report only shows Nessus / Acunetix screenshots — that's an automated scan, not a manual pentest
• Charges separately for retests (retesting is a commodity in 2026; charging for it separately is a red flag)
• Researchers with no public track record (CTFs, bug bounty halls of fame, published CVEs, technical talks at recognized conferences)
• A generic report with no reproducible PoC
• Refuses a mutual NDA (you sign theirs, but they won't sign your template)
• No direct support from the researcher (only an account manager)
• Guarantees “ZERO findings” — in 2026, any web application in production has at least one medium-severity finding; anyone guaranteeing zero isn't looking
• A price below R$ 3,000 for a production system — almost certainly an automated scanner sold as a manual pentest
• No active CNPJ, no NF-e invoicing, no formal service agreement