问题
Is there a service that lets me check a URL to see if it may possibly be a dangerous site?
When a user exits our application by clicking on an untrusted link, we sent them through a "are you sure you want to leave" redirection screen. It'd be a nice touch to do a quick check to see if we should warn the user as well.
回答1:
Try with Google Safe Browsing API.
The Google Safe Browsing Lookup API is an experimental API that allows applications to check URLs against Google's constantly-updated lists of suspected phishing and malware pages.
回答2:
You can use the Google Safe Browsing API to check if a URL is safe according to what they know about it. (API documentation)
回答3:
How about z-protect.com?
Example report: http://www.z-protect.com/report/stackoverflow.com/ this system is using a dns server to block the pages ... maybe interessting?
An this service has a api! but with a limit of 10000 requests per day: http://www.z-protect.com/api
来源：https://stackoverflow.com/questions/7917747/service-to-check-a-url-for-malware-or-phishing