In Short:
Visiting a site that doesn’t use SSL (no HTTPS) can be dangerous because your connection is basically “open” — like sending information on a postcard instead of in a sealed envelope.

Here are the main risks:

1) Your data can be intercepted

On non-SSL sites, anything you type or submit can be read by others, such as:

usernames + passwords

email addresses

contact form messages

credit card info (very dangerous)

This can happen on public Wi-Fi especially (coffee shops, airports, hotels).

2) Someone can change what you see (tampering)

Without SSL, attackers can intercept the connection and inject content, like:

malicious popups

fake login boxes

ads you didn’t put there

redirects to scam sites

So even if the site owner is honest, the page can be altered in transit.

3) Fake sites are easier to impersonate

SSL helps prove you’re connected to the real domain. Without it, attackers can more easily trick users into believing they’re on a legitimate page.

4) Higher chance of malware / scams

Non-HTTPS sites are more commonly used for:

phishing pages

drive-by downloads

scam landing pages

5) Browsers warn users for a reason

Modern browsers often label HTTP sites as “Not Secure” because the risks are real and common.

✅ Bottom line: If a site doesn’t have SSL, you should assume anything you send to it could be stolen or altered. It’s especially unsafe to log in, enter personal info, or make payments.