この記事は会員限定です。会員登録すると全てご覧いただけます。 Microsoftは2025年12月3日（現地時間）、Kerberos認証において、暗号方式RC4（Rivest Cipher 4）を段階的に廃止する方針を公式ブログで明らかにした。 発表によれば、2026年半ばまでに「Windows Server 2008 ...

Microsoftは、Windowsにおいて26年もの間デフォルトでサポートしてきた暗号化方式「RC4」を、ついに廃止することを決定しました。長年にわたりサイバー攻撃の標的となってきたこの古い技術を排除することで、Windows環境の安全性を根本から高める狙いがあります ...

Google and Mozilla today announced they’ve settled on a timeframe to permanently deprecate the shaky RC4 encryption algorithm. Google, Microsoft and Mozilla today announced they’ve settled on a ...

The decision to remove RC4 from IE, Edge, Chrome, and Firefox is final nail in the coffin for the vulnerable cryptographic algorithm After years of security experts demanding the RC4 stream cipher be ...

Microsoft has finally decided to discontinue the RC4 encryption method that has been supported by default in Windows for 26 years. By eliminating this old technology, which has been the target of ...

Want smarter insights in your inbox? Sign up for our weekly newsletters to get only what matters to enterprise AI, data, and security leaders. Subscribe Now Google, Microsoft, and Mozilla all made the ...

A fresh warning concerning the use of RC4 to support secure communication channels online has been issued after researchers were able to exploit the protocol to decrypt user data in mere hours.

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.

A paper, expected to be presented at USENIX, describes new attacks against RC4 that make plaintext recovery times practical and within reach of hackers. Two Belgian security researchers from the ...