Libraesva Email SecurityLayered, AI-driven
email security

AI-generated attacks don’t play by yesterday’s rules. Your defense shouldn’t either. Libraesva protects against evolving threats, without ever giving up your data.

Threats have evolved. Has your email security?

Generative AI-crafted deception has changed the game – phishing emails can now sound just like your CEO. Yet most security tools are still playing by old rules. Many “AI-powered” defenses send your confidential emails to the cloud for analysis, creating new vulnerabilities in the name of security.

What you’re up against

AI mimics human tone

Generative AI makes it easier to fake emails from known individuals and businesses.

Clones and copies

Thread hijacking and internal impersonation are becoming more common.

Business email compromise is evolving

Business email compromise (BEC) attacks are using social cues, not malware.

AI-powered attacks are highly targeted

Attacks can be tuned to your context, to bypass security.

94%

Of human-targeted
cyberattacks start with email

81%

Of organisations experienced a
phishing attack in the past year

3.4 billion

Phishing emails are sent
every day globally

94%

Of human-targeted
cyberattacks start with email

81%

Of organisations experienced a
phishing attack in the past year

3.4 billion

Phishing emails are sent
every day globally

Intelligent layered security

Semantic AI

Understands meaning and flags intent-based deception. Local-only processing. Zero data exposure.

Adaptive Trust AI

Learns your organization’s communication patterns to detect anomalies. Never trains on your content. Privacy-first always.

Deep-inspection & sandboxing

Analyses attachments in a fully isolated local sandbox. Entirely inside your environment.

Active URL analysis

Dissects every URL path for hidden threats, without sharing link data externally or relying on third-party APIs.

Security built for the attacks no-one sees coming

Libraesva combines context-aware AI with layered intelligent protection. Our Semantic AI identifies meaning, not just keywords, spotting intent-based threats.

Adaptive Trust AI tracks communication patterns and behavior within your organization to flag anomalies in real time. No cloud analysis, no data leaks. Just smart, sovereign email security.

Start securing today

Libraesva Email Security sees what others miss

Understand the message

Semantic AI goes beyond keywords and reads the intent behind every email, catching impersonation and AI-written deception others ignore.

Know what “normal” looks like

Adaptive Trust AI continuously maps your organization’s communication patterns to flag unusual interactions and behavioral anomalies in real-time.

Layers of defense

Secure gateway scanning with deep AI stops threats at every stage. Semantic and Adaptive Trust AI detect deception, while sandboxing and URL checks stop what others miss.

Semantic AI

Understands meaning and flags intent-based deception. Local-only processing, zero data exposure.

Deep inspection and sandboxing

Analyses attachments in a fully isolated local sandbox, entirely inside your environment.

Adaptive Trust AI

Learns your organization’s communication patterns to detect anomalies. Never trains on your content, always privacy-first.

Active URL analysis

Dissects every URL path for hidden threats, without sharing link data externally or relying on third-party APIs.

Generative AI threats
blocked by discriminative
AI defenses

We didn’t jump on the AI bandwagon – we built it.

Libraesva’s Adaptive Trust AI has long delivered privacy-conscious threat detection and, as GenAI fuels a new wave of threats, we’ve raised the bar again. Now, our Semantic AI pushes further: understanding language, intent and context to protect your inbox from attacks the world hasn’t yet seen.

Running locally,
so your data stays yours

Other platforms outsource protection to cloud GPUs and ship your messages to massive cloud-based LLMs. We don’t.

Libraesva’s efficient, purpose-built small language models (SLMs) are designed specifically for email security, not general AI tasks. And they run directly on your existing hardware.

No off-site processing, no third-party risk. Because real security means keeping your data where it belongs – with you.

Exceptional email security

Protect your business communications with award-winning email security.

Insights and updates

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Semantic AI: Contextual email threat detection

Semantic AI by Libraesva: the contextual AI email security engine that reads between the lines.

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Semantic AI Privacy-first email defense
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Semantic AI: Privacy-first email defense

Context-aware email threat detection that catches what others miss.

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Best Email Security Platform in 2025: Why Security Leaders Choose Libraesva

The Search for the Best Email Security Platform

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