Threats Tagged 'direct send'

Axios user agent activity has surged by 241% from June to August 2025, outpacing other flagged user agents. Attacks combining Axios with Direct Send achieved a 70% success rate in recent campaigns, significantly higher than non-Axios campaigns. The combination exploits Direct Send's trusted nature and Axios's lightweight design to bypass traditional security defenses. Attackers are using Axios to automate phishing, credential stealing, and API exploitation at unprecedented scale. The campaign initially targeted high-profile individuals in finance, healthcare, and manufacturing, but has expanded to include everyday users. Organizations are advised to implement robust detection mechanisms for suspicious user-agent activity, particularly Axios-related patterns, to mitigate this evolving threat.

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Threat actors are actively exploiting Microsoft 365's Direct Send feature to deliver phishing emails, bypassing perimeter security solutions by routing malicious messages through trusted infrastructure. This technique requires no credentials, only knowledge of the target domain and valid recipient addresses. The attack process involves identifying organizational domains, crafting emails impersonating internal users, and delivering them through Microsoft 365's infrastructure. Recent campaigns have successfully harvested credentials and established footholds within targeted environments. Attackers use automated tools to generate convincing business-themed lures, often utilizing PDF and DOCX attachments with QR codes or obfuscated HTML leading to phishing pages. The abuse of Direct Send represents a critical gap in email security defenses, particularly for organizations relying heavily on email communications.

MediumCampaignUnited KingdomGermanyFrance+7#credential theft#phishing#microsoft 365