Countdown starts for SHA-1 encrypted websites as IE11 and Edge set to block connections from Valentine’s Day

  • 1 min read
  • Nov 20, 2016

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In a blog post yesterday, the Microsoft Edge Team detailed an upcoming change coming to Edge and Internet Explorer. Both of the company’s browsers will start blocking access to SHA-1 encrypted sites early next year — on Valentine’s Day, to be exact. The company actually announced this change back in November 2015, and it’s finally ready to block sites with SHA-1 certificates. In the blog post, Microsoft quickly briefed SHA-1’s issues:

The SHA-1 hash algorithm is no longer secure. Weaknesses in SHA-1 could allow an attacker to spoof content, execute phishing attacks, or perform man-in-the-middle attacks when browsing the web. Microsoft, in collaboration with other members of the industry, is working to phase out SHA-1.

The software giant will start displaying an invalid certificate starting February 14, 2017, but it will not prevent a client using an SHA-1 signed certificate from being used in a client authentication. You can know more about the change on Microsoft’s official blog post here.

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