In addition to being a nuisance, many times spam websites install malware when people visit the site just for fun or out of curiosity. So yes, it can be dangerous.
If you buy something advertised in a spam product (which you should not!!!), most of the time you either don’t get your product or you get a counterfeit product.
Speaking about prescription drugs, this can have serious effects on your health.
These any many other tips can be found in the free eBook “Improve your security”.All these and many more topics are in the free eBook "Improve your security" available here: www.improve-your-security.org.