Knowledgebase: URL Defense
What is URL Defense? How to Enable it? How does it work?
Posted by Joseph O'Donnell, Last modified by Joseph O'Donnell on 27 November 2018 08:56 AM

URL Defense will defend against malicious and potentially harmful URL’s contained within emails

  • Users complaining that several emails contained malicious links
  • You upgraded your package and want to start using URL Defense feature

URL Defense is a feature that is available for users that have Business, Advance and Professional Professional Packages.

  1. You can add another layer of protection when users receive emails with malicious links by using URL Defense
  2. Upgrading to Business Package you are able to enable our URL Defense feature

Frequently Asked Questions (FAQ)

Q. What packages is URL Defense included in? 

  •  URL Defense is included in the Business, Advanced and Professional packages.

 Q. How is URL Defense enabled? 

  1. Login with your admin credentials into Proofpoint Dashboard.
  2. Click on Company Settings tab.
  3. Under Company Settings tab click on Features.
  4. Enable the option Enable URL Defense.

Q. Are there messages that will not be defended? 

  • URLs contained within Encrypted / protected messages will not be defended.
  • DKIM signed messages are not re-written by default. Customers can change their configuration to enable DKIM re-writing.

Q. How can you confirm if a URL has been re-written? 

  • Hover over the URL in the message. It will look like the following if it has been defended:

Q. What happens when a user clicks on a re-written URL? 

  • The user is redirected to the Proofpoint URL Defense service where the URL and website is analyzed.
    • If the URL is considered bad: The user will be shown a page informing them "The website has Been Blocked!".
    • If the URL is considered good: The user will be re-directed to the website.

Q. Will all URLs in a message be defended? 

  • URLs located in attachments are not re-written.

Q. Is there a noticeable delay when a user clicks on a defended URL? 

  • No. Defended URLs are checked real-time to ensure that the latest status determines it to be safe.

Q. Is URL Defense available for customers on trial? 

  • Yes.

Q. How long will defended URLs continue to work? 

  • Defended URLs will not expire. They will continue to function indefinitely.
  • If the redirection services is not available (i.e., we cannot verify the links reputation) we will redirect to the original link.

Q. Will URL Defense protect a URL that is safe at one-time but becomes compromised later? 

  • Yes. Each time a URL is clicked the status of that URL is verified before the redirect is allowed.

Q. How many URL Defense redirectors are there and is the service highly available?

  • Proofpoint has multiple redirectors per location and across multiple DCs.


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