Skip to main content
Skip to main content
Microsoft Security

Microsoft security intelligence

Security research and threat intelligence from our global network of security experts.

Subscribe

Untangling KNOTWEED: European private-sector offensive actor using 0-day exploits

Read more Untangling KNOTWEED: European private-sector offensive actor using 0-day exploits

Malicious IIS extensions quietly open persistent backdoors into servers

Read more Malicious IIS extensions quietly open persistent backdoors into servers

North Korean threat actor targets small and midsize businesses with H0lyGh0st ransomware

Read more North Korean threat actor targets small and midsize businesses with H0lyGh0st ransomware

Uncovering a macOS App Sandbox escape vulnerability: A deep dive into CVE-2022-26706

Read more Uncovering a macOS App Sandbox escape vulnerability: A deep dive into CVE-2022-26706

From cookie theft to BEC: Attackers use AiTM phishing sites as entry point to further financial fraud

Read more From cookie theft to BEC: Attackers use AiTM phishing sites as entry point to further financial fraud

Hive ransomware gets upgrades in Rust

Read more Hive ransomware gets upgrades in Rust

Toll fraud malware: How an Android application can drain your wallet

Read more Toll fraud malware: How an Android application can drain your wallet

Using process creation properties to catch evasion techniques

Read more Using process creation properties to catch evasion techniques

Improving AI-based defenses to disrupt human-operated ransomware

Read more Improving AI-based defenses to disrupt human-operated ransomware

The many lives of BlackCat ransomware

Read more The many lives of BlackCat ransomware

Exposing POLONIUM activity and infrastructure targeting Israeli organizations

Read more Exposing POLONIUM activity and infrastructure targeting Israeli organizations

Using Python to unearth a goldmine of threat intelligence from leaked chat logs

Read more Using Python to unearth a goldmine of threat intelligence from leaked chat logs