The Yandex Safe Browsing API lets you check the safety of a document by its URL. Developers of browsers, mail programs, and messaging clients can use the API to warn users when they try to follow a dangerous link. Antivirus developers can implement cloud-based filtration of malicious URLs, as well as parental controls or DLP functionality. Owners of forums, social networks, and link shortening services can benefit by automatically checking every published URL. And system administrators of corporate networks can take a centralized approach to protecting employees from undesirable websites.