Email communication remains one of the most essential tools for businesses and individuals alike, but ensuring its authenticity is critical to protecting recipients from phishing and spoofing attacks. One of the key mechanisms for verifying the legitimacy of an email is DomainKeys Identified Mail (DKIM), which uses cryptographic signatures to confirm that messages haven’t been altered in transit and truly originate from the claimed domain.
How can the finance sector leverage DMARC to defend against email fraud?
by DuoCircle
The finance sector thrives on trust. The fact that your clients are putting their hard-earned money in your company or institution shows that they not only have confidence in your financial products or services, but also that they believe you have the ability to keep their assets and data safe. But, truth be told, their money and data aren’t really safe unless you actively protect them.
Email security has become a critical priority for businesses and organizations of all sizes, and DMARC (Domain-based Message Authentication, Reporting, and Conformance) plays a central role in protecting domains from spoofing and phishing attacks. While setting up DMARC ensures that unauthorized messages are flagged or rejected, the real challenge lies in understanding the flood of DMARC XML reports that email providers generate. These reports contain valuable insights into who is sending emails on your behalf, whether they pass authentication checks, and where potential vulnerabilities may exist.
Email remains one of the most vital communication tools for both businesses and individuals, but when outgoing messages fail to send, productivity and reliability take a hit. At the heart of email delivery lies the Simple Mail Transfer Protocol (SMTP) server, which is responsible for relaying messages from your email client to the recipient’s inbox. However, misconfigurations, connectivity problems, or security restrictions can cause SMTP servers to malfunction, leaving users frustrated with undelivered or bounced emails.
Cybersecurity incidents this week include Google completing notifications for a Salesforce breach linked to ShinyHunters, and the discovery of Charon ransomware targeting the Middle East public and aviation sectors with APT-style tactics. Researchers exposed new 2TETRA:2BURST flaws in critical TETRA radio systems, while a WinRAR zero-day was exploited by Paper Werewolf and RomCom groups. The GreedyBear campaign stole over $1 million via malicious browser extensions, alongside an Ethereum trading bot scam using AI-generated YouTube videos to drain wallets of nearly $900,000. Let’s dissect each news in brief!
In today’s digital landscape, email security is more critical than ever. Cybercriminals frequently exploit email systems through spoofing and phishing, making it essential for organizations to adopt robust authentication methods. DomainKeys Identified Mail (DKIM) is one of the core email authentication protocols that helps verify a sender’s identity and ensures that messages are not altered in transit. Implementing DKIM involves publishing a TXT record in your domain’s DNS, which serves as a digital signature for outgoing emails.
How do third-party marketing agencies send emails on behalf of clients while staying
by DuoCircle
It is a common practice for businesses to delegate marketing tasks to third-party agencies. Working with these marketing agencies brings in added benefits such as specialisation in particular niches and cost-effectiveness. These agencies need to take extra care to ensure their emails don’t end up in the spam folder or get rejected.
DMARC policy transition strategies for global banks: Moving to quarantine and reject safely
by DuoCircle
DMARC has now become a non-negotiable for every organization that sends bulk emails on a daily basis. It is even more critical for banks, where the stakes are so high that it’s not merely about money, but also sensitive data of their customers, regulatory compliance, and the integrity of their brand.
Recent cybersecurity incidents underscore growing threats everywhere in healthcare, cloud services, and mobile platforms. A ransomware attack compromised over 113,500 patient records at a cancer centre; meanwhile, critical flaws in AI servers and enterprise security systems exposed risks of credential stealing and remote code execution. Alongside, fake VPN apps on official stores tricked users into fraudulent subscriptions, and a cloud container vulnerability allowed malicious actors to avoid isolation controls. These cases point to the need for prompt patching, stricter access controls, and user vigilance against growing cyber threats.
Sometimes your email just doesn’t reach its recipient. You’ve done everything right— crafted the perfect message, sent it to the correct address, and even authenticated your domain with email authentication protocols. Yet, it gets flagged or doesn’t even land in the receiver’s mailbox.
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![Patient Data Breach, Hackers Exploit AI, Code Execution Bug – Cybersecurity News [August 04, 2025]](https://www.duocircle.com/wp-content/uploads/2025/08/dmarc-generator-8901.jpg)
