Threat Intelligence

Microsoft’s Year of Email Security Data: What It Means for Your Inbox If you use email – and nearly everyone does – you’ve probably wondered how many malicious messages actually get through. Microsoft recently published a detailed report based on a full year of real-world email traffic processed by Microsoft Defender for Office 365. The data offers a concrete look at the threats that are most common, how well automated defenses handle them, and what that means for people who rely on free or paid email services. ...

What a Year of Microsoft Defender Data Reveals About Email Security Threats Email remains the primary vector for cyberattacks, but the tactics attackers use shift constantly. In June 2026, Microsoft published a detailed benchmark of email security threats observed over the prior year, drawing on telemetry from Defender for Office 365. The report offers a data-driven look at what’s actually hitting inboxes—and what’s getting blocked. While the numbers come from Microsoft’s ecosystem, the patterns are relevant to anyone who uses email. ...

What Microsoft’s Year of Email Security Data Reveals About Modern Threats Every day, billions of emails cross the internet, and a significant slice of those are malicious. Microsoft recently published a year-long analysis of email security data collected through Microsoft Defender, offering a rare look at the real-world scale and shape of email threats. While the report is aimed at IT administrators, there are concrete lessons for anyone who uses email — which is to say, almost everyone. ...

Beware of TamperedChef: Malware Hidden in Signed Productivity Apps A new malware campaign is making the rounds, and it exploits something that usually gives users confidence: a digital signature. Security researchers recently detailed a campaign dubbed TamperedChef, which uses signed productivity applications to deliver info-stealers and remote access trojans (RATs). If you download software for work or personal use, this is worth understanding. ...