Here’s a breakdown of the key information from the provided text, focusing on the email security threat:
The Threat: Misconfigured Email Security Leading to Phishing
* what’s happening: Attackers are exploiting weaknesses in how companies set up their email security (specifically SPF, DKIM, and DMARC).these checks are meant to verify the sender’s authenticity, but are sometimes not strictly enforced, especially in complex email routing setups (using third-party services or on-prem servers).
* How it effectively works: Attackers send emails from outside the company, but spoof the company’s own domain as the sender.As the security checks aren’t fully effective, these emails are accepted and marked as “internal.”
* Why it’s effective: Attackers mimic internal email patterns – using real employee addresses, familiar display names (like IT or HR) – to make the emails look legitimate.
* What they’re after: Login credentials and other sensitive information. They’re using phishing kits like Tycoon2FA to create convincing lures.
* Types of lures: Voicemails, shared documents, HR communications, password resets/expirations.
* Scale: This isn’t a targeted attack; it’s a broad “cast a wide net” approach. Triumphant breaches can lead to Business Email Compromise (BEC) attacks.
* Timing: The practice has been around, but increased in popularity in the second half of 2025.
Source: Microsoft reported this trend in a recent report. The information is also referenced from The Hacker News.
In essence, the article describes a growing phishing tactic that leverages misconfigured email security to make fraudulent emails appear as legitimate internal communications, increasing the likelihood of successful attacks.
