Security APIS: articles and guides

Phishing detection APIs score URLs, domains and emails for phishing risk in real time. What they check, where they fit in email and app security, and how to evaluate them.

URL reputation APIs return a risk signal for a web link — malware, phishing, spam or suspicious hosting. What they check, how they differ from IP reputation, and how to use them safely.

Threat intelligence APIs provide programmatic access to indicators, reputation data and context about threats. What free options can do, where they fit, and how to use them well.

IP reputation APIs tell you whether an IP address is associated with malicious activity. What they check, where they fit in a security stack, and how to evaluate free and paid options.

Breach-lookup APIs let you check whether an email, domain or password has appeared in a known data breach. What the free options can and cannot do, safe ways to use them, and where they fit.