Update licensing information and documentation for clarity

- Changed copyright year from 2025 to 2026 in main.go.
- Updated licensing terms in main.go to reflect GNU General Public License v3.0.
- Revised README.md to specify licensing under GPL v3.0 and clarify usage terms.
- Modified index.md to indicate licensing under GPL v3.0 with a link to the LICENSE file.

Author: TMHSDigital

README.md

@@ -3,7 +3,7 @@
 [![Build](https://img.shields.io/github/actions/workflow/status/TMHSDigital/subenum/go.yml?branch=main&label=build)](https://github.com/TMHSDigital/subenum/actions)
 [![Go Report Card](https://goreportcard.com/badge/github.com/TMHSDigital/subenum)](https://goreportcard.com/report/github.com/TMHSDigital/subenum)
 [![Release](https://img.shields.io/github/v/release/TMHSDigital/subenum)](https://github.com/TMHSDigital/subenum/releases)
-[![License](https://img.shields.io/github/license/TMHSDigital/subenum)](LICENSE)
+[![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](LICENSE)
 [![Docker](https://img.shields.io/badge/docker-supported-0db7ed)](docs/docker.md)
 [![CodeQL](https://img.shields.io/github/actions/workflow/status/TMHSDigital/subenum/codeql.yml?label=CodeQL)](https://github.com/TMHSDigital/subenum/actions/workflows/codeql.yml)
 
@@ -206,7 +206,7 @@ This software is provided for **educational and authorized security testing purp
 - Do not use this tool for unauthorized access, data collection, or disruption of services.
 - Users are solely responsible for compliance with all applicable laws.
 
-The developers explicitly prohibit malicious use. See [LICENSE](LICENSE) for full terms.
+This software is licensed under the GNU General Public License v3.0. See [LICENSE](LICENSE) for full terms. Derivatives must also be distributed under GPL-3.0.
 
 ---
 

docs/index.md

@@ -92,4 +92,4 @@ This tool is provided for **educational and legitimate security testing purposes
 
 ## License
 
-This project is licensed under the MIT License with additional restrictions against malicious use. 
+This project is licensed under the GNU General Public License v3.0. See the [LICENSE](https://github.com/TMHSDigital/subenum/blob/main/LICENSE) file for full terms. 

main.go

@@ -1,20 +1,21 @@
-// Copyright (c) 2025 TM Hospitality Strategies
-//
 // subenum - A Go-based CLI tool for subdomain enumeration.
+// Copyright (C) 2026 TM Hospitality Strategies
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
 //
-// IMPORTANT LEGAL NOTICE:
-// This tool is provided for educational and legitimate security testing purposes ONLY.
-// Usage of this tool against any domain without explicit permission from the domain
-// owner may violate applicable local, national, and/or international laws.
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
 //
-// Users MUST:
-// 1. Only scan domains they own or have explicit permission to test.
-// 2. Comply with all applicable laws and regulations.
-// 3. Use this tool responsibly and ethically.
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
 //
-// The developer(s) explicitly prohibit any malicious or unauthorized use of this tool
-// and assume no liability for any misuse or damages resulting from its use.
-// See the LICENSE file for full terms and conditions.
+// For authorized use only. Only scan domains you own or have explicit
+// written permission to test.
 
 package main