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  • Authors
  • Ahona Rudra
  • About
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Ahona Rudra
Domain & Email Security Expert at PowerDMARC
Ahona is the Marketing Manager at PowerDMARC, with 5+ years of experience in writing about cybersecurity topics, specializing in domain and email security. Ahona holds a post-graduation degree in Journalism and Communications, solidifying her career in the security sector since 2019.
Latest posts by Ahona Rudra (see all)
  • What is Gmail Confidential Mode? How Iit Works & How Secure it is - September 3, 2026
  • AI Phishing Emails: How to Verify AI-Written Emails Before You Trust Them - August 31, 2026
  • Email Security Debt: The Cybersecurity Metric Nobody Measures - August 31, 2026
onmicrosoft domain

Microsoft Limits Onmicrosoft Domain Usage for Email Sending

News
Microsoft is limiting email sending from onmicrosoft.com (MOERA) domains, capping outbound mail at 100 external recipients per day starting October 15, 2025.
August 25, 2025
Zero day Vulnerability Definition and Examples 01 01

Zero Day Vulnerability: Examples, Detection, and Prevention

Blog
A zero day vulnerability is a critical threat. Learn what it is, how it works, and key steps to detect and prevent exploits from harming your organization.
August 25, 2025
What is Social Engineering 01

Social Engineering: Recognize and Prevent Attacks

Blog
Go beyond the basics of social engineering. We dissect the attacker's process, from reconnaissance to execution, and show you how to build a solid defense.
August 25, 2025
Types of Malware A Complete Guide

Common Types of Malware: What They Are and How They Work

Blog
Explore the most common types of malware, how each one works, how they spread, and what businesses can do to protect against attacks.
August 25, 2025
what is spear phishing

Spear Phishing Attacks: What They Are and How to Stop Them

Blog
What is spear phishing and how do you stop it? Learn how spear phishing attacks work, real-world examples, and proven prevention strategies.
August 25, 2025
Receiving DMARC reports outside your domain

How to Fix “External Domains Not Giving Permission for DMARC Reports”

Blog
Receiving DMARC Reports outside your domain is possible through DMARC external destination verification. More about how external domain verification works.
August 24, 2025
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    BIMI 2.0: What’s New in the BIMI Specification and What It Means for SendersSeptember 8, 2026 - 7:37 am
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    What Is the BIMI AVP Tag? Avatar Preference ExplainedSeptember 8, 2026 - 6:53 am
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    Building an Incident Response Plan from ScratchSeptember 8, 2026 - 4:40 am
  • The-New-Way-Hackers-Are-Tricking-Financial-AI-Assistants
    The New Way Hackers Are Tricking Financial AI AssistantsSeptember 7, 2026 - 8:37 am

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