Email is still the most exploited initial vector of attacks in cybersecurity. Phishing is still considered the number one initial access vector in breach investigations, and at the core of all phishing attacks is domain spoofing. (more…)
This step-by-step guide explains how to prepare your Microsoft 365 tenant and custom domain to publish a DKIM record, locate your Microsoft-managed DKIM key hostnames, and understand how DomainKeys Identified Mail works under the hood. You will learn how DKIM’s email authentication model uses a cryptographic signature based on a public key and private key pair to protect email messages as they traverse SMTP, and how Microsoft 365 implements selectors to support safe key rotation.
Email-centric threats continue to be a prevalent and expensive cybersecurity challenge for both companies and individuals. With phishing methods evolving in complexity, businesses are turning to advanced security solutions to spot and prevent harmful emails from landing in their mailboxes.
![AI Phishing Campaign, TikTok Phishing Targeted, Dutch Police Cyberattack – Cybersecurity News [March 23, 2026]](https://www.duocircle.com/wp-content/uploads/2026/03/spf-permerror-5600-1.jpg)
Here are the top cyber incidents from last week that kept the cybersecurity professionals on their toes. A highly sophisticated AI-powered phishing campaign is targeting hundreds of thousands of businesses worldwide. Meanwhile, TikTok business profiles are on the radar of cybercriminals. In a shocking turn of events, the Dutch Police became the victim of a threat attack. Also, authorities were forced to shut down a school in Southampton after a cyberattack.
In the retail industry, building a bond of trust with your clients is of utmost importance, but what happens when the very channel used to build this trust is itself compromised?
![Horabot Resurfaces Mexico, Aura Breach Compromise, Tax Season Threats – Cybersecurity News [March 16, 2026]](https://www.duocircle.com/wp-content/uploads/2026/03/spf-record-7898.jpg)
Here are some of the biggest head turners from last week’s cybersecurity landscape. While the Horabot banking malware has re-entered Mexico, the Aura data breach exposed a whopping 900,000 customers to potential threats. Meanwhile, cyber incidents are surging because of the ongoing tax season. A new malware, “DarkSword,” is giving nightmares to iPhone users across the globe.
Displaying your brand logo in the inbox is becoming an important part of email trust and recognition. With BIMI, businesses can make their emails more identifiable, but this requires choosing the right certificate. This is where VMC and CMC come in. While both allow your logo to appear in supported inboxes, they differ in terms of requirements, cost, and the level of trust they offer.
![Cambodia Targets Cybercriminals, Traditional Security Insufficient, AI Against Phishing – Cybersecurity News [March 09, 2026]](https://www.duocircle.com/wp-content/uploads/2026/03/spf-record-5023.jpg)
Last week’s cyber incidents revolved mainly around stepping up the security setups to combat cyber mishaps. Cambodia has recently approved a draft to tackle cybercrime syndicates. Advanced phishing scams are forcing organizations to amp up their security systems. Smartphone users are relying on AI to keep cyber scams at bay.
Email authentication is vital for safeguarding your domain against spoofing and enhancing email deliverability. A significant aspect of this is DKIM (DomainKeys Identified Mail), which ensures that an email remains unchanged during transmission. However, issues like incorrect DNS records, misconfigured selectors, or absent signatures can lead to DKIM validation failures.
Email authentication plays a critical role in protecting your domain from spoofing and ensuring that your messages reach recipients’ inboxes. When DKIM signatures fail, it can lead to delivery issues, spam folder placement, or even rejected emails.