May 5, 2026
In this article Multi-step social engineering campaign leading to credential theft Mitigation and protection guidance Microsoft Defender detections Hunting queries Indicators of compromise Phishing campaigns continue […]
May 1, 2026
In this article Tycoon2FA disruption impact QR code phishing attacks CAPTCHA tactics Malicious payloads Business email compromise Defending against email threats Microsoft Defender detections During the […]
April 17, 2026
In this article Sapphire Sleet’s campaign lifecycle Defending against Sapphire Sleet intrusion activity Microsoft Defender detection and hunting guidance Indicators of compromise Executive summary Microsoft Threat […]
April 7, 2026
In this article Attack chain overview Mitigation and protection guidance Indicators of compromise (IOC) References Learn more Microsoft Defender Security Research has observed a widespread phishing […]
April 3, 2026
For the last year, one word has represented the conversation living at the intersection of AI and cybersecurity: speed. Speed matters, but it’s not the most […]
March 20, 2026
In this article A wide range of tax-themed campaigns How to protect users and organization against tax-themed campaigns Microsoft Defender detection and hunting guidance Indicators of […]
March 17, 2026
In our eighth Cyberattack Series report, Microsoft Incident Response—the Detection and Response Team (DART)—investigates a recent identity-first, human-operated intrusion that relied less on exploiting software vulnerabilities […]