What is Proofpoint Nexus?
Proofpoint Nexus® is an ensemble of AI models—that protects people and data by detecting and preventing advanced threats like phishing, BEC, malware, account takeovers, and data breaches across email, collaboration, web, and cloud environments.
Watch now Nexus overview
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AI at Proofpoint
Decades of precision. Unmatched threat intelligence.
The raw processing power of our AI models is only part of the story—true precision comes from the rich, diverse data that fine tunes performance. Fed by daily email analysis, active campaign tracking, threat actor monitoring, and user reported incidents, our models operate within a living, self learning intelligence ecosystem. This continuous feedback loop makes our detection engines sharper, more powerful, and increasingly effective at stopping threats over time.
“Proofpoint Nexus’s AI models process 2.3T emails yearly, supported by a threat intelligence team that tracks 100+ unique threat actor groups and more than 8,400 active threat campaigns.”
Every Second Delivers New Threat Insights—Nonstop
Nexus Language Model (LM)
Detects BEC and sophisticated phishing threats, leveraging advanced language analysis (including transactional language, urgency, context and intent) to uncover hidden threats and unknown data risks.
Nexus Relationship Graph (RG)
Identifies subtle behavioral changes in your users’ communications, detecting deviations in normal user behavior, volumetric changes, sharing of sensitive company data to reduce risks of data leaks and protects against behavior-driven cyber risks.
Nexus Threat Intelligence (TI)
Understands attackers’ tactics and proactively protecting against new cyberthreats by using real-time intelligence to identify emerging, attacker tactics and system vulnerabilities and triggering sandbox emulation for suspicious URLs and attachments.
Nexus Computer Vision (CV)
Identifies and neutralize vision-based threats. Through advanced computer vision technology, Nexus CV detects threats hidden in visual elements, such as phishing sites, QR codes, malicious attachments and spoofed emails.
Nexus Machine Learning Model (ML)
Dynamic and adaptive learning techniques – like supervised learning, unsupervised learning and ensemble methods – along with predictive threat detection capabilities to map known attack behaviors and unsupervised techniques to detect unknown abnormalities.
Nexus timeline
Highlighting Proofpoint AI innovation from 2015 to today
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2015 - 2020 | Groundbreaking Foundations in Predictive Defense
During this era, we pioneered machine-learning-driven imposter classifiers, advanced URL and malware sandboxing, and some of the industry's earliest predictive sandboxing techniques.During this era, we pioneered machine-learning-driven imposter classifiers, advanced URL and malware sandboxing, and some of the industry's earliest predictive sandboxing techniques. These groundbreaking investments laid the technical foundation for today’s speed, efficiency, and rapid model development, giving us a multi-year head start in stopping evolving email attacks.
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2021 - 2024 | Threat Intelligence and Behavior-Aware Detection
From 2021 to 2024, we pushed innovation further with next-generation threat intelligence, ML models that surfaced never-before-seen attack patterns, and web isolation that acted as predictive sandboxing at scale.From 2021 to 2024, we pushed innovation further with next-generation threat intelligence, ML models that surfaced never-before-seen attack patterns, and web isolation that acted as predictive sandboxing at scale. This period delivered a fourth-generation credential phishing engine, a relationship graph fused with malicious URL detection, and a range of language models.
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2025 and Beyond | Breakthrough Multi-Channel, Multi-Stage Defense for a New Threat Era
Looking ahead, we’re creating stronger defenses against complex, multi-stage attacks.Looking ahead, we’re creating stronger defenses against complex, multi-stage attacks. We’re delivering breakthroughs in email bombing detection, prompt-injection defense, and protection across channels—preparing customers for a rapidly evolving threat landscape that demands AI-driven resilience.
Architected for Flexibility
Nexus protections are embedded across the collaboration threat lifecycle, from pre-delivery to post-delivery, from time of click to login.
