Low-quality websites, often referred to as "quack" sites, can be identified by their lack of credibility, accuracy, or expertise. These sites may spread misinformation, promote scams, or engage in phishing activities, putting unsuspecting users at risk. Quack sites can masquerade as legitimate sources, making it difficult for users to discern their true intentions. The consequences of visiting such sites can be dire, including identity theft, malware infections, or financial losses.