WindowsDefenderの最強設定に関してご説明します。WindowsDefenderの一般的な評判で言うと、無償であるがゆえ、コンピューターウイルスからの防御力が、有償のセキュリテイソフトより弱く信頼性はイマイチと言われております。しかし、適切な設定をすることで、有償のソフトウェアよりも、高い防御力でパソ...

could use some rewriting, but you get the concept read more about New Windows Defender zero-day blocks Microsoft antivirus updates

Unpacking Windows Defender Application Control: It's enterprise-level app security for everyone. Prevent unauthorized software installations and control what runs on your system. #WindowsDefender #App

Over the weekend, security researcher Abdelhamid Naceri (also known as Nightmare Eclipse) released another Microsoft Defender zero-day exploit that blocks antivirus updates.

Le Contrôle intelligent des applications de Windows 11 s'active enfin sans réinstaller le système. On vous explique comment faire et si ça vaut le coup.

Abdelhamid Naceri, also known as Nightmare Eclipse, has publicly revealed his identity and released BigDiskBuster, a new proof-of-concept exploit that interferes with Windows Defender platform and signature updates. He says the tool works on all supported Windows versions, though it remains buggy, and he also recounted a bitter dispute with Microsoft...

While Windows Defender may appear fully operational to the casual observer, it can be covertly frozen on outdated threat signatures. The cybersecurity researcher Abdelhamid Naceri, operating under the pseudonym Nightmare Eclipse, recently released BigDiskBuster. This BigDiskBuster proof-of-concept tool is designed to stealthily sabotage Microsoft Defender updates while operating seamlessly in the background. Crucially, BigDiskBuster does not overtly disable the antivirus engine, nor does it abruptly terminate real-time protection protocols.

YouTube video by ねこぴーのIT活用

📰 Source : BleepingComputer — Date : 22 septembre 2026 Le chercheur en sécurité Abdelhamid Naceri (alias Nightmare Eclipse) a publié un nouveau proof-of-concept (PoC) zero-day nommé BigDiskBuster, ciblant Microsoft Defender.

パソコンを使っていると、「セキュリティソフトって入れないとダメかな？」「でも毎年お金かかるし…」って悩みますよね。 実は、Windows 10や11に最初から入っているWindows Defender（正式名称：Micr […]