SPF Record Setup for Office 365: The Complete Email Authentication Guide

SPF Record Setup for Office 365: The Complete Email Authentication Guide

Email is a vital part of our everyday communication, especially for businesses. But did you know that without proper safeguards, your emails could be at risk of being spoofed by cybercriminals? That’s where SPF records come in. Setting up an SPF (Sender Policy Framework) record gives your domain the protection it needs against email impersonation, ensuring that only trusted servers can send emails on your behalf.

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How does DMARC p=reject work against phishing attempts?

How does DMARC p=reject work against phishing attempts?

It’s well known that you need to have a strong defence mechanism in place to ward off phishing attacks. Speaking of which, Domain-based Message Authentication, Reporting, and Conformance (DMARC) stands out as an email security protocol. Not only does it protect your domain from being misused by attackers, but it also gives you control over how unauthenticated emails are handled. 

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SPF Record Generator: Easily Create DNS Records for Your Domain

SPF Record Generator: Easily Create DNS Records for Your Domain

 

In the digital age, ensuring that your emails reach their intended recipients without getting lost in the spam folder is crucial. Just think about how frustrating it can be when you send an important message, only to find out later that it was never received. An effective way to enhance your email deliverability and security is by using a Sender Policy Framework (SPF) record. But what exactly does that mean? Simply put, an SPF record tells email servers which senders are allowed to send emails on behalf of your domain. Crafting these records might seem daunting, but with the right tools, you can quickly create a solid SPF configuration. In this article, we’ll explore some of the best SPF record generators available and how they can simplify this vital task for you.

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Commission Documents Exposed, Intel Flaws Exposed, Operations Disrupted Cyberattack – Cybersecurity News [May 12, 2025]

Commission Documents Exposed, Intel Flaws Exposed, Operations Disrupted Cyberattack – Cybersecurity News [May 12, 2025]

Commission Documents Exposed, Intel Flaws Exposed, Operations Disrupted Cyberattack – Cybersecurity News [May 12, 2025]

by DuoCircle

This week’s cybersecurity roundup brings a mix of arrests, warnings, and active threats. Intel chips face a newly discovered vulnerability affecting years of hardware. Dior is dealing with a customer data breach, and Nucor’s operations took a hit from an attack. Meanwhile, a messaging app flaw is being used in espionage campaigns across the Middle East. Here’s the full breakdown. (more…)

Cybersecurity in the age of AI: How innovation is empowering both defenders and attackers

Cybersecurity in the age of AI: How innovation is empowering both defenders and attackers

Cybersecurity in the age of AI: How innovation is empowering both defenders and attackers

by DuoCircle

 

The cyber threat landscape has always been complex and evolving, but the advent of AI has empowered threat actors to bypass security filters more easily than ever. They are now penetrating deep into every sector, affecting interconnected operations at multiple levels. AI-backed deception has led to a stage where now a staggering 87% of global organizations have faced an AI-powered cyberattack in the past year. 

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Windows Server SMTP Relay: Complete Configuration and Setup Guide

Windows Server SMTP Relay: Complete Configuration and Setup Guide

Setting up an SMTP relay on a Windows Server might sound like a daunting task, but it’s essential for keeping your email communications flowing smoothly. If you’ve ever hit “send” on an email and wondered what happens next, you’re not alone. Email messages travel across multiple servers before reaching their destination, making proper configuration crucial for success. Understanding the basics of how SMTP relay works can save you from frustrating delays and delivery issues down the line. This guide will take you step-by-step through the setup process, ensuring that your emails are sent securely and efficiently while navigating the unique features of newer Windows Server versions like 2025. So, let’s dive in and simplify this process together!

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Ransomware EDR Bypass, Apache Parquet Exposure, CISA Oil Threats – Cybersecurity News [May 05, 2025]

Ransomware EDR Bypass, Apache Parquet Exposure, CISA Oil Threats – Cybersecurity News [May 05, 2025]

Ransomware EDR Bypass, Apache Parquet Exposure, CISA Oil Threats – Cybersecurity News [May 05, 2025]

by DuoCircle

This week, attackers found a clever way to slip ransomware past SentinelOne’s defenses using its own update process. A serious Apache Parquet flaw just got easier to exploit thanks to a new public tool. The U.S. government is warning energy sector operators about ongoing cyber threats that use alarmingly basic tactics, and medical tech enterprise Masimo is dealing with production delays after a network breach. Plus, the Darcula phishing service is abusing iMessage and RCS. Full breakdowns below!

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Are humans the most vulnerable link when it comes to cybersecurity?

Are humans the most vulnerable link when it comes to cybersecurity?

Are humans the most vulnerable link when it comes to cybersecurity?

by DuoCircle

 

The cybersecurity ecosystem stands tall on three supporting pillars- technology, processes, and people. As cyber scams are getting more sophisticated with one attack at a time, cybersecurity experts are bound to introduce more complex technology and intricate processes to curb the risk. However, human beings tend to lag behind when it comes to matching the pace with the latest cybersecurity dynamics. The 2025 Data Breach Investigation Report by Verizon has claimed that a staggering 60% of data breaches took place because of human error. Undeniably, we are the most vulnerable when it comes to the cybersecurity landscape.

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Phishers abuse Google sites and DKIM replay to send fake emails and steal credentials

Phishers abuse Google sites and DKIM replay to send fake emails and steal credentials

Phishers abuse Google sites and DKIM replay to send fake emails and steal credentials

by DuoCircle

In a highly sophisticated phishing attack, cybercriminals took an uncommon path to allow fraudulent phishing emails to bypass Google’s security filters and redirect recipients to cloned websites, where they were asked to enter their credentials. The emails were sent from no-reply@google.com and included valid DKIM signatures— in short, it was a classic case of DKIM replay attack. That’s why they passed email authentication checks and Gmail displayed them without any warnings.

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Apple AirBorne RCE, Lazarus Watering Attacks, CISA Flags Exploits – Cybersecurity News [April 28, 2025]

Apple AirBorne RCE, Lazarus Watering Attacks, CISA Flags Exploits – Cybersecurity News [April 28, 2025]

Apple AirBorne RCE, Lazarus Watering Attacks, CISA Flags Exploits – Cybersecurity News [April 28, 2025]

by DuoCircle

This week’s updates are packed with real-time threats and adversarial attacks. Nowadays, even Apple devices are open to silent attacks without users even tapping a button. A few software flaws are now confirmed to be under real attack, and there’s a fresh warning about ransomware-as-a-service being marketed with brand-friendly options. And if your developers forget to hide Git files, there’s a growing number of attackers ready to pounce. Here’s what happened recently and what details you should know of.

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Setup HostGator Email: A Step-by-Step Guide for Your Account

Setup HostGator Email: A Step-by-Step Guide for Your Account

Setting up your HostGator email account might seem like a task reserved for the tech-savvy among us, but worry not—it’s easier than you think! Whether you’re starting fresh or moving from another service, having an email that matches your domain adds a professional touch to your communications. With the right guidance, you’ll sail through the setup process without a hitch. Let’s dive into this step-by-step guide that simplifies every stage, ensuring you can focus on what matters most—connecting with your audience and clients effortlessly.

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What is the role and relevance of SPF in BIMI and VMC?

What is the role and relevance of SPF in BIMI and VMC?

 

You might think it is easier to upload your logo next to your emails so that your audience can easily recognize your brand among all the clutter and feel more confident when engaging with your messages. But it’s far more complicated than that! 

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ClickFix Hacking Tactic, Android Credit Scams, Marks Spencer Cyberattack – Cybersecurity News [April 21, 2025]

ClickFix Hacking Tactic, Android Credit Scams, Marks Spencer Cyberattack – Cybersecurity News [April 21, 2025]

ClickFix Hacking Tactic, Android Credit Scams, Marks Spencer Cyberattack – Cybersecurity News [April 21, 2025]

by DuoCircle

This week, we will explore how malware disguised as security tools is stealing credit card information and how hackers are initiating customer support scams. From supermarket delays to SIM data leaks, it’s been anything but quiet on the cyber front. We will also examine Microsoft’s internal misstep, which resulted in the locking out of thousands. Here’s what you need to know before you click, tap, or swipe again.

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Real-time email verification and its relevance in 2025!

Real-time email verification and its relevance in 2025!

 

Emails are an integral part of our personal and professional lives. That is exactly why it is important to keep our email communications secure, effortless, and reliable. Since email systems are widely targeted by cybercrooks for malicious purposes, users are expected to adopt security mechanisms. One such effective tactic to safeguard your email communications is real-time email verification. This blog aims to explore the significance of synchronous or real-time email verification in today’s digital landscape. Have a look!

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How To Create a DMARC Record on GoDaddy: Step-by-Step Guide

How To Create a DMARC Record on GoDaddy: Step-by-Step Guide

Setting up a DMARC record on GoDaddy is a smart move for anyone looking to protect their email domain from spammers and scammers. If you’ve ever been frustrated by phishing attempts or spoofed emails, you’re not alone! This guide is here to help you take control of your email security with straightforward steps designed for even the most novice user. By following these easy instructions, you’ll gain peace of mind knowing that your emails are safer, while making it harder for bad actors to exploit your domain. Let’s dive in and get your DMARC record set up today!

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LA

Subdomailing: The DMARC risk you might be ignoring

Subdomailing: The DMARC risk you might be ignoring

 

In 2024, Guardio’s email protection systems identified unusual patterns in email metadata, related explicitly to SMTP servers and their authentication as legitimate senders. Upon investigation, it was discovered that this campaign has been ongoing since at least 2022 and involves over 8,000 domains and 13,000 subdomains owned by legitimate companies, including those belonging to MSN, McAfee, eBay, and VMware, which were compromised due to subdomain hijacking. This research led to the coining of a new term—subdomailing. 

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Tycoon2FA Bypasses Microsoft, European Espionage Campaign, ResolverRAT Global Threat – Cybersecurity News [April 14, 2025]

Tycoon2FA Bypasses Microsoft, European Espionage Campaign, ResolverRAT Global Threat – Cybersecurity News [April 14, 2025]

Tycoon2FA Bypasses Microsoft, European Espionage Campaign, ResolverRAT Global Threat – Cybersecurity News [April 14, 2025]

by DuoCircle

 

This week’s cybersecurity news roundup isn’t just another string of breaches and exploits but a blueprint of how far threat actors have come and how swiftly they are advancing and increasing their attack surface. From phishing kits outsmarting MFA to malware operating entirely in memory, attackers are sharpening their tools and aiming at high-value Sharks and industry giants, even preying upon global healthcare providers and diplomatic channels. Let’s dig into what happened and how we can leverage our defenses and stay safe online!

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