Zscaler Achieves High Efficacy in NSS Labs SSE Threat Protection Test
Severity: Low (Score: 27.9)
Sources: Zscaler
Published: · Updated:
Keywords: threat, zscaler, highly, effective, reliable, labs, protection
Severity indicators: ot
Summary
Zscaler has been recognized as a Highly Effective & Reliable cloud-delivered security platform in the Q2 2026 NSS Labs SSE Threat Protection test. The Zscaler Zero Trust Exchange™ platform achieved an overall security efficacy score of 98.85%, demonstrating exceptional performance against advanced threats. Key metrics include a 100% resistance rate against evasion techniques, a 98.65% malware block rate, and a 99.05% exploit block rate. The test assessed Zscaler's capabilities against 4,873 unique malware samples, highlighting its effectiveness in blocking both known and zero-day threats. The NSS Labs test utilized a significantly updated methodology to evaluate real-world performance, emphasizing the need for continuous improvement in cybersecurity measures. Zscaler's defense-in-depth strategy, which includes full TLS/SSL inspection and AI-powered malware detection, contributes to its strong performance. These results underscore Zscaler's commitment to maintaining a leading position in the cybersecurity landscape. Key Points: • Zscaler achieved a 98.85% security efficacy score in NSS Labs' Q2 2026 test. • The platform demonstrated a 100% resistance rate against sophisticated evasion techniques. • Zscaler's testing included 4,873 unique malware samples, showcasing its effectiveness against advanced threats.
Detailed Analysis
**Impact** Organizations across all sectors using Security Service Edge (SSE) platforms are affected by the evolving threat landscape driven by AI-enhanced attacks. A single successful malware infection or exploit can cause operational disruption, data theft, financial loss, and reputational damage. The test covered 4,873 unique malware samples and 317 unique exploits, indicating broad exposure to ransomware, polymorphic malware, and zero-day vulnerabilities globally. The protection efficacy directly impacts enterprises relying on cloud-delivered security to protect distributed users. **Technical Details** The attack vectors tested include sophisticated evasion techniques, malware, and exploits targeting a wide range of applications, protocols, and operating systems. The kill chain stages addressed are initial compromise via exploits and malware delivery, with inline detection and blocking of threats. Zscaler demonstrated 100% resistance to evasion, 98.65% malware block rate, and 99.05% exploit block rate. Specific CVEs or IOCs were not disclosed in the articles. **Recommended Response** Defenders should implement full TLS/SSL inspection and deploy AI-powered malware detection engines combined with advanced cloud sandboxing to quarantine unknown threats inline. Inline Intrusion Prevention Systems (IPS) and advanced threat protection should be enabled to block exploit attempts in real time. Continuous monitoring of threat intelligence feeds and network traffic for evasive techniques is advised. No specific patches or IOCs were provided for immediate blocking.
Source articles (2)
- Zscaler is “Highly Effective & Reliable” in NSS Labs SSE Threat Protection Test — Zscaler · 2026-06-09
As threat actors increasingly leverage AI to enhance the speed, scale, and sophistication of their attacks, the methods used to validate cybersecurity controls must evolve at an even faster pace. Poin… - Zscaler is “Highly Effective & Reliable” in NSS Labs SSE Threat Protection Test — Zscaler · 2026-06-10
As threat actors increasingly leverage AI to enhance the speed, scale, and sophistication of their attacks, the methods used to validate cybersecurity controls must evolve at an even faster pace. Poin…
Timeline
- 2026-06-09 — Zscaler announces NSS Labs test results: Zscaler reveals its performance in the Q2 2026 NSS Labs SSE Threat Protection test, achieving a 98.85% efficacy score.
- 2026-06-10 — Zscaler publishes blog post on test results: Zscaler shares detailed insights on its NSS Labs test performance, emphasizing its security capabilities.
Related entities
- Malware (Attack Type)
- Ransomware (Attack Type)
- Zero-day Exploit (Attack Type)
- T1021 - Remote Services (Mitre Attack)