2026 WINNER · CYBERSECURITY STARS AWARDS
Viettel Cyber Security Red Team
Best Red Teaming
Overview
Viettel Cyber Security (VCS) is a member of Viettel Group - one of the most valuable global brand, operating in industrial - telecommunication major.
Leveraging 100% in house development, VCS offers a comprehensive range of cutting edge cybersecurity solutions, protecting governments, large corporations and SMEs against sophisticated cyber threats in digital age.
Key Capabilities
Viettel Cyber Security Red Team delivers advanced adversary simulation that replicates real-world attack campaigns across enterprise environments. Unlike traditional penetration testing, the service executes full attack chains—from initial access and privilege escalation to lateral movement and data exfiltration—providing a realistic assessment of organizational security posture.
A core strength is its attacker-centric methodology. The team applies reverse-thinking techniques, simulating attacker behavior to identify exploitable paths even in environments with limited visibility, missing logs, or fragmented monitoring systems. This enables accurate reconstruction of attack scenarios that conventional approaches often fail to detect.
Viettel Cyber Security Red Team demonstrates deep technical capability through advanced exploitation and zero-day research. The team is capable of discovering and leveraging previously unknown vulnerabilities, validating complex attack paths, and exposing high-impact weaknesses beyond standard vulnerabilities or misconfigurations.
Beyond identification, the service delivers actionable remediation. Organizations receive prioritized, practical guidance to fix vulnerabilities, strengthen controls, and prevent real-world exploitation, ensuring measurable improvement in security posture.
The service is further strengthened through integration with threat intelligence, SOC operations, and incident response, enabling continuous validation and improvement of detection and response capabilities in real operational environments.
How we are different
Viettel Cyber Security differentiates itself by combining elite offensive security expertise with proven real-world impact, delivering Red Teaming that goes far beyond conventional security testing.
Unlike providers that rely on predefined scenarios or automated tools, Viettel Cyber Security Red Team operates with a true attacker mindset—designing tailored attack campaigns based on real threat intelligence and executing them with the depth of advanced adversaries. This approach has enabled VCS to uncover critical vulnerabilities, including real-world zero-day exploitation scenarios that directly impact enterprise environments.
The team's capability is demonstrated through high-impact engagements. In one case, VCS successfully identified and analyzed a zero-day vulnerability in a widely used OTT platform, enabling full system compromise through a single user interaction. The team reconstructed the entire attack chain, identified all affected assets within the internal network, and provided responsible disclosure to the vendor.
In another incident involving ransomware at a state-owned enterprise, VCS conducted deep cryptographic analysis and identified weaknesses in the encryption implementation. This enabled full data recovery without paying ransom, avoiding an estimated financial loss of over USD 25,000 and preventing at least 3 days of operational disruption affecting more than 200 internal users.
The company's differentiation is further reinforced by globally recognized expertise. VCS engineers have consistently demonstrated top-tier offensive capabilities through achievements at competitions such as Pwn2Own, validating their ability to discover and exploit complex vulnerabilities under real-world conditions.
Beyond offensive testing, Viettel Cyber Security uniquely integrates Red Team insights into defensive operations. Findings are directly applied to improve SOC detection, incident response readiness, and overall cyber resilience, ensuring measurable security improvement rather than theoretical results.
By combining attacker-level capability, proven real-world impact, and actionable remediation, Viettel Cyber Security Red Team delivers a level of realism, depth, and effectiveness that clearly differentiates it in the global cybersecurity market.
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