EaseFilter

  Data generation is skyrocketing, and managing on-premises storage costs while ensuring data accessibility is a persistent challenge for IT teams. Storing every piece of data on expensive, high-performance local servers is simply not sustainable. Enter the concept of storage tiering—specifically, using the  CloudTier Storage Tiering SDK  to automatically archive infrequently accessed files to  Microsoft Azure Blob Storage . In this post, we'll explore how the CloudTier SDK bridges the gap between your local file systems and the cloud, creating a transparent, highly efficient hybrid storage environment. What is the CloudTier Storage Tiering SDK? The CloudTier Storage Tiering SDK is a Hierarchical Storage Management (HSM) toolkit—often leveraging file system filter drivers—that allows developers to seamlessly integrate on-premises applications with remote cloud storage infrastructure. Rather than forcing users or applications to manually upload files to the cl...

  The rapid adoption of Generative AI tools like ChatGPT, Gemini, and Claude has supercharged developer productivity, but it has also introduced a massive Data Loss Prevention (DLP) blind spot. Employees routinely upload internal logs, proprietary source code, and documents containing Personally Identifiable Information (PII) to AI chatbots—usually without any malicious intent. While network-layer solutions and DNS sinkholes can block access entirely, they often disrupt legitimate work or are easily bypassed when developers use personal hotspots. Endpoint data protection is far more robust. By intercepting file access at the kernel level before the browser even reads a sensitive file, you can stop data exfiltration dead in its tracks. In this post, we will explore how to build a proactive AI DLP solution using the EaseFilter  File Control Filter driver  SDK to block web browsers from accessing and uploading PII and source code. The Architecture: Kernel-Level Interce...

  The cybersecurity landscape moves incredibly fast. For years, organizations relied on a "castle and moat" model—building strong firewalls to keep attackers out of their corporate networks. But because of cloud computing, remote work, and interconnected digital supply chains, those castle walls have permanently dissolved. Today, cybersecurity is no longer about defending a perimeter; it is about protecting  identity  and  data , no matter where they live. To understand how modern enterprises survive in this environment, we have to look at the macro risks facing the world today, the market solutions designed to stop them, and the low-level technical architecture—like the  EaseFilter file security SDK —that makes these solutions possible. The Modern Threat Landscape: High Risks and High Stakes Cybercrime has evolved from solitary hackers guessing passwords into a highly lucrative, automated, and organized global industry. Organizations today face several ...

  In today's enterprise environments, data security is paramount. With the rise of sophisticated ransomware, insider threats, and stringent compliance regulations (like GDPR, HIPAA, and PCI DSS), traditional security measures like basic Access Control Lists (ACLs) are no longer sufficient. Organizations need deep, real-time visibility into exactly who is accessing what data, when, and how. Building a custom file activity monitor allows you to track, audit, and control file system events as they happen. In this article, we will explore how to build a robust, kernel-level file activity monitor using the  EaseFilter File Monitor SDK . Why Kernel-Level Monitoring? Standard Windows user-mode APIs (like FileSystemWatcher in .NET) are helpful for basic notification, but they suffer from dropped events under heavy load and cannot actively  block  or  modify  operations. To achieve true enterprise-grade security, you must intercept I/O requests at ...

  In today’s hyper-connected and threat-prone digital landscape, traditional perimeter defenses are no longer enough. Malicious software, zero-day vulnerabilities, and even simple user errors can compromise sensitive corporate data in an instant. To mitigate these risks, organizations are increasingly turning to zero-trust architectures and secure workspaces. One of the most effective ways to secure an environment is by  sandboxing application I/O —isolating an application's file system operations so it can only interact with a tightly controlled, virtualized subset of the system. If you are a developer tasked with building secure workspaces, data loss prevention (DLP) tools, or application isolation software on Windows, the  EaseFilter File System Filter Driver SDK  provides the kernel-level control you need to make robust I/O sandboxing a reality. What is I/O Sandboxing? At its core, an I/O sandbox intercepts the read, write, create, and delete requests an ...

  If you are developing a file system filter driver—whether for data protection, continuous data protection (CDP), auditing, or encryption—understanding how Windows handles file Input/Output (I/O) is absolutely critical. When an application reads or writes to a file, the request doesn't always go straight to the hard drive. Windows uses a complex architecture involving the Cache Manager, the Memory Manager, and the File System to optimize performance. As a result, a single file operation can trigger multiple different types of I/O requests. In this post, we will break down the differences between Cache Read/Write, Non-Cache Read/Write, and Paging I/O Read/Write, and explain exactly how to intercept and handle them using the EaseFilter File Monitor SDK and File Control SDK . 1. The Core Component: The Windows Cache Manager Before diving into the specific I/O types, it is important to understand the role of the Windows Cache Manager. To speed up file access, Windows attempt...