Specialist ransomware protection that works even when endpoints are offline
Ransomware attacks have evolved.
Today’s attackers don’t rely on known malware, signatures, or noisy behaviour — and they often disable connectivity before encryption begins.
Peritus Ransomware Defence is a specialist, ransomware-only security layer designed to detect and contain encryption activity as it happens, including previously unseen zero-day variants, even when devices are isolated from the network.
This service sits on top of your existing security stack, adding a focused layer of protection where most platforms are weakest.
Why ransomware still succeeds in “secure” environments
Most modern security platforms are designed to be broad.
Ransomware is now highly targeted.
In real-world attacks:
Threat actors gain access quietly
Disable Wi-Fi or network interfaces
Isolate endpoints
Trigger encryption locally
At that point, many tools lose visibility.
Ransomware Defence is built specifically for this scenario.
What makes this different
True zero-day ransomware detection
This service does not rely on:
Signatures
Known ransomware families
Threat intelligence lookups
Cloud-based correlation
Instead, it detects encryption behaviour and ransomware kill-chain activity directly on the endpoint, allowing it to identify brand-new, previously unseen ransomware variants.
Works even when the endpoint is offline
Attackers often disable connectivity to evade detection.
This service continues to:
Monitor encryption behaviour locally
Detect ransomware activity without internet access
Operate independently of cloud connectivity
Even if Wi-Fi is disabled or the device is deliberately isolated, ransomware behaviour can still be detected.
Most security products cannot do this.
Designed to sit on top of your existing stack
This is not a replacement for EDR, XDR, or endpoint protection platforms.
It is a specialist layer that:
Complements Microsoft Defender, SIEM, and EDR platforms
Adds depth where broad tools trade coverage for scale
Requires no rip-and-replace or architectural change
It integrates cleanly alongside platforms such as CrowdStrike, providing additional ransomware-specific protection without disruption.
How Peritus delivers the service
1. Continuous ransomware monitoring
Endpoints are monitored for live encryption activity and ransomware-specific behaviour, including techniques designed to evade traditional controls.
3. Containment and response guidance
We work with your team to isolate affected systems, reduce blast radius, and coordinate next steps — including incident response where required.
2. Rapid alerting and triage
When suspicious activity is detected, Peritus security specialists assess and escalate alerts based on risk and impact.
4. Clear reporting
You receive concise, business-ready reporting focused on:
What happened
What was prevented
What actions were taken
What risk remains
Commercially simple, operationally effective
Lightweight deployment
No disruption to existing tooling
Approx. £2 per endpoint per month
Ideal as a standalone control or bundled with managed services
For many organisations, this becomes a low-cost, high-impact addition to an already significant security investment.
Is this right for you?
This service is particularly effective for organisations that:
Already have a strong security stack in place
Want deeper ransomware-specific protection
Are concerned about zero-day ransomware
Need protection that still works when attackers disable connectivity
What happens on a ransomware readiness call?
A short, practical conversation with a Peritus security specialist to understand how exposed your organisation may be to modern ransomware tactics.
The call typically covers:
How ransomware commonly bypasses existing security controls
Whether your current stack would still detect encryption if connectivity was lost
Where specialist ransomware detection adds value alongside your existing tools
Whether this approach is relevant for your environment
Duration: ~20–30 minutes
Preparation required: None
Sales pressure: None — this is an exploratory discussion