End Ransomware.

Stop Data Exfiltration.

Block Infostealers.

The kernel-free platform behind ByteJams Ranger: autonomous, on-device detection with no signatures, no cloud dependency, and no performance tradeoffs.

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ByteJams Ranger dashboard showing endpoint protection status

Windows Endpoint Security
Reinvented in User Mode

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ByteJams Ranger showcases the future of endpoint protection: a kernel‑free solution that also blocks remote ransomware attacks, a persistent blind spot even for Gartner Magic Quadrant leaders.

While AI‑driven platforms promise adaptability, they are routinely bypassed. Attackers shape malicious code to look statistically benign and evade detection.

Our patented technology detects threats generically, without signatures, cloud dependency, or connectivity, making it ideal for air‑gapped environments.

We eliminate kernel components entirely, avoiding the system instability behind incidents like the CrowdStrike global outage.

While Microsoft is building its Windows Resilient Security Platform, ByteJams delivers protection today that addresses the root cause of 90% of successful ransomware breaches without compromising system reliability.

Ransomware Protection

  • Stop file encryption attacks instantly and automatically.
  • Deploy once and protect forever: no ongoing configuration needed.
  • Autonomous on‑device detection using a single, signature‑less algorithm; no cloud, sandbox, or decoys needed.
  • Automatic file recovery ensures no data loss; encrypted files are instantly restored.
  • Flexible deployment with choice of user‑mode or kernel‑mode protection based on your resiliency requirements.
  • Protects against both local and remote ransomware, including attacks originating from unmanaged or under-protected outdated machines.
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Data Exfiltration Protection

  • Block unauthorized file exfiltration to any destination, including hidden archive transfers.
  • Preserve legitimate cloud storage sync while blocking unknown attacker‑controlled accounts.
  • Patented on‑device algorithm operates without signatures or cloud reputation.
  • Outperforms traditional DLP (Data Loss Prevention) without the complexity of policies and maintenance.
  • Zero-touch deployment: no ongoing management required.
  • Flexible user‑mode or kernel‑mode deployment based on resiliency requirements.
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Infostealer Protection

  • Protects browser cookies from theft, even when infostealers bypass Chrome's App‑Bound Encryption to decrypt stored session data.
  • Blocks pass‑the‑cookie attacks that let attackers hijack authenticated sessions and bypass multi‑factor authentication entirely.
  • Autonomous on‑device detection using a single, signature‑less algorithm; no cloud, sandbox, or decoys needed.
  • Multi‑browser support for Google Chrome, Microsoft Edge, and Mozilla Firefox, covering the browsers most commonly targeted by infostealers.
  • Zero-touch deployment: no ongoing management required.
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Security hardening

  • Strengthens Windows kernel architecture to prevent BYOVD attacks.
  • Autonomous on‑device protection without signatures or cloud dependencies.
  • Blocks vulnerable driver attacks through design; no reliance on blocklists.
  • Prevents kernel‑mode attacks that evade EDR tamper protection.
  • Enhance third-party tamper protection of solutions from CrowdStrike, Cylance, Microsoft Defender, SentinelOne, Sophos, and Sysmon.
  • No performance impact while maintaining full application compatibility.
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Open Cybersecurity Schema Framework (OCSF)

ByteJams Ranger is the first solution to natively produce high-fidelity telemetry fully aligned with the OCSF standard, making it compatible with, and enriching, existing telemetry pipelines.

Ranger protects critical assets from threats like ransomware and data exfiltration, making it an ideal sensor for Managed Service Providers (MSPs), Security Operations Centers (SOCs), in-house threat response teams, and Managed Detection and Response (MDR) providers. The platform delivers standardized, enterprise-grade endpoint visibility with minimal deployment and operational friction.

ByteJams is a contributor to the Open Cybersecurity Schema Framework.

Dutch endpoint security against ransomware, data exfiltration and infostealers.

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