By mid-2026, Windows domain controllers will default to allowing only AES-SHA1, with RC4 disabled unless administrators explicitly re-enable it. Microsoft says eliminating RC4 proved complicated due ...

Microsoft patched serious vulnerabilities Tuesday in Windows, Internet Explorer and Office, but also urged customers to stop using the aging RC4 cipher and SHA-1 hashing function in their systems and ...

Microsoft is officially moving to shut the door on RC4 - a legacy cryptographic cipher that has quietly persisted inside Windows authentication environments for decades - and forcing organizations to ...

Microsoft released optional security updates Tuesday for various versions of the .NET Framework that prevent the RC4 encryption algorithm from being used in TLS (Transport Layer Security) connections.

There’s an old saying in the security community: Attacks always get better. The latest case where that holds true is for the aging RC4 cipher that’s still widely used to encrypt communications on the ...

About time: Microsoft introduced support for the RC4 stream cipher in Windows 2000 as the default authentication algorithm for the Active Directory services. The system has been insecure for even ...

Although RC4 encryption should already be a thing of the past, it is still used sporadically today. Microsoft has now announced that it will remove Rivest Cipher 4 from Kerberos. This is intended to ...

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Microsoft's scheduled security patches were accompanied by cryptography-related recommendations to stop using RC4 cipher and SHA-1 Microsoft patched serious vulnerabilities Tuesday in Windows, ...