# Let's Encrypt Adoption Among the Top 5,000 Companies

## Overview

This dataset analyzes Let's Encrypt adoption across the world's top 5,000 companies.

It identifies companies whose websites use Let's Encrypt issued SSL/TLS certificates, providing a snapshot of Let's Encrypt adoption among large organizations.

The dataset is intended for technology research, cybersecurity analysis, technographic research, competitive intelligence, market analysis, and data science.

## Dataset Highlights

* 5,000 large companies analyzed
* Identifies Let's Encrypt adoption at the company and website level
* Focused on large organizations
* Useful for analyzing SSL/TLS certificate technology adoption
* Suitable for research, visualization, segmentation, and machine learning projects

## What is Let's Encrypt?

Let's Encrypt is a free, automated, and open Certificate Authority that provides SSL/TLS certificates. It enables websites to deploy HTTPS without purchasing certificates from traditional commercial certificate authorities.

## Dataset Fields

| Field         | Description                                  |
| ------------- | -------------------------------------------- |
| Company       | Company or organization name                 |
| Domain        | Primary website domain                       |
| Let's Encrypt | Indicates whether Let's Encrypt was detected |
| Technology    | Detected technology name                     |
| Country       | Company or website country, where available  |

Refer to the accompanying dataset file for the complete list of fields and values.

## Methodology

Websites were analyzed for technical fingerprints associated with Let's Encrypt. A company is considered a Let's Encrypt adopter when the relevant certificate or technology footprint is detected on its associated website.

Technology detection represents an observation at the time of collection and should not be interpreted as confirmation of an organization's complete infrastructure.

## Use Cases

This dataset can be used for:

* Technographic research
* Cybersecurity research
* SSL/TLS infrastructure analysis
* Market research
* Competitive intelligence
* Data science and machine learning
* Technology adoption analysis
* Academic research

## Important Notes

* Technology detection is based on publicly observable website signals.
* A detected Let's Encrypt certificate does not necessarily mean that Let's Encrypt is used across all of an organization's domains or infrastructure.
* Website infrastructure can change over time.
* Results represent observations from the dataset's collection period.
* The dataset should not be interpreted as an official statement from any company regarding its technology stack.

## License

Please refer to the repository license for permitted uses, redistribution, and attribution requirements.