Before you start
- None: this guide helps you spot fake sites before downloading anything
You want to download an AI, such as ChatGPT, and the search results show several links that look alike. Some do not lead to the publisher’s website, and it is easy to pick the wrong one. This guide shows you how to recognize the real website and the official app stores.
Start with the official addresses
Begin with this table. Type the address yourself in your browser, instead of clicking a link you found somewhere else.
| AI | Official address | Official download or access page |
|---|---|---|
| ChatGPT | https://chatgpt.com | https://chatgpt.com/download |
| Claude | https://claude.ai | https://claude.com/download |
| Copilot | https://copilot.com | https://copilot.com |
| Gemini | https://gemini.google.com | https://gemini.google.com/app/download (computer: https://gemini.google/desktop/) |
| Mistral | https://chat.mistral.ai | https://chat.mistral.ai |
| Perplexity | https://www.perplexity.ai | Mac: download page on the perplexity.ai site; Windows: Microsoft Store |
For Mistral, Le Chat is now called Vibe, at the same address. For Copilot, Microsoft also cites copilot.cloud.microsoft, and copilot.microsoft.com redirects to copilot.com.
Tip: save the official address in your bookmarks from the start. You will not have to search for it again.
Be careful with sponsored links
In a search engine, paid ads are labeled. Google shows the label “Sponsored results.” Bing marks paid ads as well.
An ad is not necessarily the official site. Always compare its address with the table above. Cybermalveillance advises going directly to the site concerned, using a bookmark you created yourself.
Example request Remind me what to check before downloading an app for [name of the AI you chose].
Check the publisher before you install an app
On a phone or a computer, check the publisher name shown in the app store. It must match the publisher of the AI.
| AI | Publisher to check in the store |
|---|---|
| ChatGPT | OpenAI (the iOS listing shows “OpenAI OpCo, LLC”) |
| Claude | Anthropic |
| Copilot | Microsoft Corporation |
| Gemini | |
| Mistral | Mistral AI (listing “Vibe by Mistral (formerly Le Chat)”) |
| Perplexity | Perplexity AI, Inc. |
On Google Play, OpenAI advises searching for “openai chatgpt” and then checking that the publisher shown is OpenAI. The Mistral app may also appear under the name “Le Chat by Mistral AI”: it is the same product.
Cybermalveillance advises against installing apps from anywhere other than official sites and stores.
Do not enter anything unnecessary
On a suspicious page, never enter:
- the password of another service;
- your bank card details to “unlock” a free AI;
- a text message code you did not ask for.
Cybermalveillance also reminds you never to share sensitive information by email or over the phone.
Example request Explain in simple words what phishing is, then give me five signs that should make me careful.
Report anything suspicious
Several services receive reports. In France, you can use:
- Signal Spam (signal-spam.fr) for fraudulent messages;
- Phishing Initiative for addresses of phishing sites, so their blocking can be requested;
- Internet-signalement.gouv.fr, a portal run by the Ministry of the Interior, to report offenses.
The sender’s address of a message can be faked. If in doubt, type the address of the site concerned yourself.
Follow our installation tutorials
The following tutorials guide you step by step for each AI. They link to the official addresses.
Claude
ChatGPT
Gemini
Copilot
Mistral
Perplexity
If you do not yet know which AI to choose, the questionnaire points you to an AI based on your needs. Its public rules are available to everyone.
Good habits
- Check the website address, letter by letter, before entering anything on it.
- Always go through a bookmark or the address you typed yourself.
- Check the publisher name in the app store.
- Never share a password, a text message code or bank details on a page you did not choose.
- Protect your personal data: share only the minimum with an AI.
- Review the AI’s answers before using them, especially if they concern money, health or an administrative procedure.
Official sources
- Phishing quick reference sheet (Cybermalveillance.gouv.fr)
- How to protect yourself against phishing (economie.gouv.fr)
- Download the Claude apps (Anthropic)
- Download the ChatGPT app (OpenAI)
- Download Gemini on desktop (Google)
- Getting started with Microsoft Copilot (Microsoft Support)
- Vibe by Mistral (Google Play listing)
- Labeling of ads in Google search results
Interfaces change: report an error to us.
To get started
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