extremus.com.br

What It Is

Extremus is a cybersecurity services company based in Salvador, Brazil. Founded in 2003, it has a very clear positioning: using “hacker-style” offensive methods to help clients discover and fix security issues. Its core services include Red Team operations, penetration testing, on-demand attack tool development, binary exploitation, reverse engineering, and DDoS stress testing. Overall, it is closer to high-end, human-led security assessment and attack-defense exercises than standardized security software.

Core Capabilities and Protection Coverage

Based on the available content, Extremus emphasizes testing in complex environments that are “well monitored” and “well protected.” It argues that traditional penetration testing may be less effective in such scenarios, and therefore highlights its Red Team capabilities and deep exploitation expertise. Application security testing is described as its most frequently requested service, with the website stating that it performs more than 5,000 hours of application security testing per year. Its binary security capabilities cover both Linux and Windows software, making it suitable for high-risk vulnerability validation before software release. The company can also develop PoCs and attack tools on demand for internal or external Red Teams.

Compliance, Management, and Integrations

In terms of methodology, Extremus says it aligns with frameworks such as NIST 800-115, NIST 800-42, OSSTMM 3, OWASP 4.0, and ISSAF. Team credentials include hands-on certifications such as OSCP, OSEP, OSWE, CRTP, and PNPT. It is worth noting that the site does not disclose company-level compliance certifications such as ISO 27001 or SOC 2. Nor does it describe a management platform, continuous alerting, ticketing workflows, or standard integrations with SIEM, vulnerability management, or CI/CD systems. As a result, it appears better suited to project-based assessments than to a continuously managed security platform.

Pricing, Pros, and Cons

The website does not publish pricing, packages, delivery timelines, or SLA details; quotes appear to be customized via contact form or phone. Its strengths include long operating history, a deep offensive security stack, coverage of advanced scenarios from Web to binary exploitation, and an emphasis that its reports are not simply scanner output. Its weaknesses are limited commercial transparency, with no clear information on cross-border service delivery, language support, payment methods, or remote delivery details.

Who It’s For and Access from China

Extremus is suitable for enterprises and government organizations that need deep Red Team engagements, application security testing, binary vulnerability research, pre-launch security validation, or regulation-driven security assessments. For customers in China, website accessibility is unknown, and payment and contracting methods are not disclosed. If Chinese-language delivery, MLPS compliance, or local response is required, domestic alternatives such as 奇安信, 绿盟科技, 启明星辰, 安恒信息, and 长亭科技 may be better options.