Digital tools for Windows
Here are three Windows tools from KK-SOFT. KK-SECURE scans and monitors files.
KK-PDF Pro works with documents, and KK-RAR handles archives. Let's take a closer look at each one.

From file changes to alerts
When you turn on background protection, KK-SECURE monitors the folders you select under your Windows account.
It groups nearby changes before scanning. It checks file hashes and threat indicators, and can call Defender or AMSI for supported tasks.
Depending on your settings, the app can log an event, show an alert, or quarantine a file. Monitoring starts after Windows reports a change.

Choose an edition by workload
Standard covers file scans, folder monitoring, and quarantine in one window.
Pro adds static analysis for executables and ZIP files. Technicians can capture kernel events with ETW and look up a process by its ID.
Enterprise adds event correlation, selected process minidumps, and WDAC Audit. Administrators can use audit results to review a policy before enforcing it.

Recoverable quarantine
Windows encrypts the quarantine vault for the current user. You can export a recovery copy to a folder you choose.
A burst of file changes may need a closer look. Backup and sync jobs can produce the same pattern.
In a test lab, compare a harmless EICAR test file with clean controls. Record detections, false alerts, and recovery results.

Keep heavy work off the interface
In KK-PDF Pro, choose a document and the operation you need. A separate process uses PDFium to read and render pages.
Jobs such as merging, splitting, or reordering pages have time limits. If a job fails, the interface can still report the error.
You choose where the output goes. The document stays on your computer during processing.

Turn scans into searchable PDFs
To make scanned text searchable, the app renders a page as an image and sends it to Tesseract.
It checks its recognition data and the output format before combining pages. Double-check important names, amounts, and dates.
To measure accuracy, use the same Vietnamese and English sample pages. Compare character error rates and processing time per page.

Check before extracting
KK-RAR uses the 7-Zip engine to list the files inside an archive.
It checks for unsafe paths and name conflicts before unpacking to a staging folder.
Once the output passes those checks, it moves to the destination. The app tries to keep Windows download-origin information where the file system supports it.

Encrypt and authenticate data
For sensitive data, KK-RAR offers its own container format with AES-256-GCM encryption.
When you open the container, the app authenticates the data before it exports files. Try changing one byte in a copy to see that verification fail.
This feature belongs to the KK-RAR secure format. The protection offered by ZIP, 7-Zip, and RAR depends on the format and the options you select.

Find the right installer and try it
On the Downloads page, open Details for the installer version, size, and SHA-256 checksum.
Sign in to get a code for the edition you selected. The thirty-day trial starts at first activation.
For a closer look, open Architecture. You can also reach the author, Nguyễn Duy Điển, from the Contact section.