# So that’s why it’s free..

Source: https://www.youtube.com/watch?v=H5r_Sg87ivM
Recap page: https://rapidrecap.app/video/H5r_Sg87ivM
Generated: 2025-08-15T15:32:10.746+00:00

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## Quick Overview

The "So that’s why it’s free.." video reveals that WinRAR's "free" trial is effectively perpetual, as the software never enforces a purchase, allowing users to continue using it indefinitely despite constant reminders to buy a license. This is explained as a deliberate business model choice by the developers, rather than a security flaw.

**Key Points:**
- WinRAR's "free trial" does not expire and imposes no functional limitations, allowing indefinite use.
- This perpetual functionality is a deliberate business decision by the developers, not a security flaw.
- The strategy aims to encourage continued usage and word-of-mouth marketing.
- WinRAR was developed by Eugene Roshal and Alexander Roshal.
- The video briefly explains RAR and ZIP file formats and the underlying technology.
- The presenter references security vulnerabilities and alternative data streams (ADSEs) as related concepts in file handling.

![Screenshot at 00:01: Presenter explains that WinRAR's "free trial" is effectively perpetual, not a security flaw, but a business model.](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-00-01.png)

**Context:** The video discusses the long-standing "free trial" model of the popular file compression software, WinRAR. It addresses why users can continue to use the software indefinitely without purchasing a license, despite frequent reminders. The explanation delves into the software's development history and the business strategy employed by its creators.

## Detailed Analysis

The video "So that’s why it’s free.." explains the unique business model behind WinRAR's "free" trial. Despite the software frequently prompting users to purchase a license after the initial 40-day period, it never actually stops functioning or enforces any limitations. This has led to widespread use of WinRAR without payment for many years. The presenter clarifies that this is not a security vulnerability or a loophole, but rather a conscious decision by the developers, Eugene Roshal and Alexander Roshal. They intentionally allow the software to remain fully functional indefinitely to encourage continued usage and word-of-mouth promotion. This strategy has proven highly effective, making WinRAR one of the most widely recognized and used file compression tools globally. The video also touches upon the historical context of WinRAR's development, its file formats (.rar and .zip), and the underlying technology that enables its persistent functionality.

### WinRAR Business Model

- Perpetual "free" trial with constant purchase reminders, never enforcing limitations
- Deliberate business strategy by developers, not a security flaw

### Software Functionality

- WinRAR remains fully functional indefinitely after the trial period
- Encourages continued use and word-of-mouth promotion

### Historical Context

- Developed by Eugene and Alexander Roshal
- Widely used file compression tool

### Technical Aspect

- Discusses RAR and ZIP file formats
- Underlying technology enables persistent functionality

![Screenshot at 00:01: Presenter explains the concept of WinRAR's perpetual free trial.](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-00-01.png)
![Screenshot at 00:03: Screenshot of a "The Hacker News" article discussing a WinRAR zero-day vulnerability.](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-00-03.png)
![Screenshot at 00:05: Screenshot of a "Popular Mechanics" article titled "Why WinRAR’s 40 Day Trial Actually Lasts Forever".](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-00-05.png)
![Screenshot at 00:50: Diagram illustrating the structure of a RAR v5 file, detailing headers and data.](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-00-50.png)
![Screenshot at 01:34: Demonstration of a "runme" PowerShell script on a desktop labeled "BIG CORP LLC".](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-01-34.png)
![Screenshot at 01:55: Screenshot of the "Approval Center" interface, showing a pending request for script execution.](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-01-55.png)
![Screenshot at 01:58: Detailed view of a "Permit Application" dialog box within ThreatLocker, showing options to restrict application access.](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-01-58.png)
![Screenshot at 02:11: A "Permit Application" prompt appears, offering options to "Open Testing Environment" or "Skip Testing".](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-02-11.png)
![Screenshot at 02:24: A "welivesecurity.com" article discussing WinRAR vulnerabilities and alternate data streams \(ADSEs\).](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-02-24.png)
![Screenshot at 03:56: WinRAR diagnostic messages window showing multiple "cannot create" errors, indicating attempts to write to specific file paths.](https://ss.rapidrecap.app/screens/H5r_Sg87ivM/00-03-56.png)