The Problem: Backup Advice Assumes the Attack Already Succeeded
Fox News published a helpful guide on protecting family photos and important documents from ransomware. The advice is sound: maintain 3-2-1 backups, use strong passwords, disconnect external drives when not in use, and avoid suspicious email attachments.
But all of that advice operates on a fundamental assumption: the ransomware already got in. You’re being told how to recover after the damage is done, not how to prevent the damage in the first place.
Here’s what the article doesn’t explain: ransomware has to complete two specific file system operations before it can demand money. First, it has to write its executable payload to your hard drive — typically delivered via an email attachment, a malicious download, or an exploit that drops a file to disk. Second, it has to write encrypted versions of your files, overwriting the originals.
Both of those are file write operations. And file write operations can be controlled at the Windows kernel level, before they complete.
How FileSure Blocks Ransomware at the File System Layer
FileSure Defend operates as a Windows kernel filter driver. It intercepts every file operation — open, read, write, delete, create, rename — before the operation reaches the file system. You define a policy: which users, which programs, and which machines are allowed to perform which file operations.
For ransomware protection, the most effective upstream intervention is blocking unauthorized programs from writing executable files to disk. Here’s a specific FileSure rule configuration that would have stopped the attack described in the article:
- Operation: Block Write, Block Create
- File name filter: *.exe, *.dll, *.vbs, *.bat, *.ps1, *.scr
- Program filter: Exclude authorized programs (your software deployment tools, Windows Update, any self-updating applications you trust)
- Drive type: All local drives
- Action: Block and log
When ransomware arrives via email attachment or browser download, the email client or browser tries to write the malicious executable to disk. FileSure intercepts that write operation. The program attempting the write — Outlook, Chrome, Firefox, whatever — is not on your authorized list for writing executable files. The operation is blocked. The payload never lands. The ransomware never executes. Your family photos are never encrypted.
This works on ransomware variants nobody has seen before, because FileSure doesn’t try to recognize the threat. It doesn’t rely on signatures or behavior analysis or machine learning models trained on known samples. It simply enforces the rule: unauthorized programs cannot write executable files. Done.
Even if you miss that first layer — maybe the attacker used a living-off-the-land technique or exploited a trusted program — FileSure still protects your files at the second layer. Ransomware has to write encrypted versions of your photos and documents to complete the attack. You can define a second rule that restricts which programs are allowed to modify files in your Photos, Documents, and Desktop folders. Any program not on that list tries to write to those locations, and the operation is blocked.
The article’s advice about backups and hygiene is still valid. But it’s damage control, not prevention. FileSure stops the attack before your files are ever touched.
Try It Yourself
FileSure Defend runs on all Windows versions, from legacy systems to the latest Windows 11. Install it on a test machine, configure the rule above, and then try to save an .exe file from your browser. Watch it get blocked and logged in real time. That’s the whole demo. It works exactly like that, every time.
Start your free 21-day trial at bystorm.com — 1 server, 10 workstations, no credit card required.
Source: How to protect family photos and files from ransomware
Category: Ransomware
Tags: ransomware, file system security, kernel filter driver, zero-day protection, backup strategy, family photos, executable blocking, windows security
