Cyberattacker techniques, tools, and infrastructure

Cyberattackers constantly evolve their techniques, tools, and infrastructure to launch increasingly complex attacks. Learn about the latest tactics and how to detect, disrupt, and defend against them.

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Secure and verify every identity with Microsoft Entra

Microsoft Entra expands beyond identity and access management with new product categories such as cloud infrastructure entitlement management (CIEM) and decentralized identity.

Learn more
October 21, 2016

4 min read

Beware of Hicurdismos: It’s a fake Microsoft Security Essentials installer that can lead to a support call scam

(Note: Our Tech support scams FAQ page has the latest info on this type of threat, including scammer tactics, fake error messages, and the latest scammer hotlines.
July 22, 2016

4 min read

Kovter becomes almost fileless, creates a new file type, and gets some new certificates

Trojan:Win32/Kovter is a well-known click-fraud malware which is challenging to detect and remove because of its file-less persistence on infected PCs.
March 22, 2016

4 min read

New feature in Office 2016 can block macros and help prevent infection

To help counter malware, we are releasing a new feature in Office 2016 that blocks macros from loading in certain high-risk scenarios.
April 2, 2014

4 min read

Adware: A new approach

Protecting the modern workplace from a wide range of undesirable software Our evaluation criteria describe the characteristics and behavior of malware and potentially unwanted applications and guide the proper identification of threats.
Prevent threats with Microsoft Defender

The Microsoft Defender family offers comprehensive threat prevention, detection, and response capabilities for everyone—from individuals looking to protect their family to the world’s largest enterprises.

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June 20, 2013

3 min read

Ad injection and you: How adware gets on your computer

Are advertisements showing up in your browser (no matter whether you use Internet Explorer, Firefox or Chrome) on sites that you’ve never seen ads on before; or, do the ads seem different from what you’ve seen before? Your system might be affected by adware that injects advertisements into sites as you browse, such as Adware:Win32/InfoAtoms […]