If you receive an email that your computer has a virus, you should …

Send your credit card details to download the fix   

Delete the message because websites and ads cannot detect viruses  

Investigate the matter by clicking on the link or attachment provided 

Download the anti-virus fix immediately 

None of the above options are recommended.

The appropriate action to take if you receive an email claiming that your computer has a virus is to:

1. Avoid clicking on any links or downloading any attachments within the email. These could potentially contain malware or viruses.
2. Delete the email or move it to your spam/junk folder.
3. Run a scan with your trusted antivirus software to check for any potential infections on your computer.
4. If you have any concerns regarding the security of your device, consult a professional or reach out to your IT support team for assistance.

If you receive an email stating that your computer has a virus, you should follow these steps:

1. Do not send your credit card details: Legitimate organizations will not ask for your credit card details via email to fix a virus. Scammers may try to trick you into providing sensitive information, so avoid sharing any personal or financial data.

2. Delete the message: If you're unsure about the legitimacy of the email or don't recognize the sender, it's safer to delete the message. Websites, ads, or random emails cannot accurately detect viruses on your computer.

3. Do not click on suspicious links or attachments: Clicking on unknown links or downloading attachments from unknown sources can increase the risk of infecting your computer with viruses or malware. It's best to avoid interacting with such links or attachments.

4. Download a reputable anti-virus program: If you previously installed a trusted anti-virus software, run a scan on your computer using that program to check for any potential threats. However, ensure that you download the anti-virus software directly from the official website of the software provider.

If you are concerned about the security of your computer, it's always a good idea to consult a professional or contact the customer support of your chosen anti-virus software for further assistance.

If you receive an email that claims your computer has a virus, you should not follow any of the options mentioned in your question. Instead, here's what you should do:

1. Do not click on any links or download any attachments: Opening a suspicious link or downloading an unknown attachment can potentially install malware on your computer or give remote access to attackers.

2. Do not provide any personal or financial information: Legitimate antivirus companies will never ask for your credit card details via email to fix a virus issue. Providing such information can put you at risk of identity theft.

3. Delete the email: After ensuring you haven't clicked on any links or downloaded any attachments, it's best to delete the email altogether. Be cautious of similar emails in the future and don't engage with suspicious messages.

But how can you determine if the email is legitimate or not? Here are a few tips:

- Check the sender's email address: Pay attention to the domain name and ensure it matches the official domain of the antivirus company or a trusted source.
- Look for common signs of phishing: Poor grammar, spelling mistakes, urgent requests for personal information or financial details, and unsolicited email attachments or links are a few indicators of a phishing attempt.
- Verify with the source independently: Instead of relying solely on the email, visit the official website of your antivirus software or contact their customer support directly to confirm any notifications regarding potential virus infections.

Remember to always exercise caution when dealing with suspicious emails, and when in doubt, err on the side of caution and delete the email.