What are the most important email security protocols, and how do they protect your communications?
by DuoCircle
If you send marketing email campaigns to your clients almost every day, you will know that email is one of the key channels to connect with your audience. But what you might not realize is that it is also the most vulnerable channel that lets cybercriminals in and leaves your entire ecosystem exposed to phishing, spoofing attacks, and data breaches.
The key differences between Sender Policy Framework and Sender ID
by DuoCircle
The primitive version of SMTP (Simple Mail Transfer Protocol) didn’t have a feature to verify the email sender’s authenticity, leaving room for phishing and spoofing instances. Over time, emails became one of the most exploitable attack vectors. It was easier for threat actors to modify the ‘From’ field in an email to impersonate banks, governments, and well-known brands. They would send millions of potentially fraudulent emails each day, urging recipients to ‘reset their password’ or ‘verify their account,’ leading to credential theft.
Zip Flaw Exploited, Meta Confirms Spyware, ENGlobal Ransomware Outage – Cybersecurity News [February 03, 2025]
by DuoCircle
Cyber threats are becoming more sophisticated with each day passing by, attacking individuals and businesses unpredictably. This week’s security news covers news pieces directly curated from authentic sources. We will discuss how a new exploit in 7-Zip allowed attackers to bypass Windows security and how Meta identified a spyware attack on 90 journalists and activists.
Everything you need to know about setting up email authentication on Mailchimp!
by DuoCircle
If you want your emails to reach your subscribers’ inboxes without any hassle, setting up email authentication for your authorized domain is something you can’t afford to ignore. Domain authentication enables you to send out your emails to the right inbox. It also enables you to maintain your subscriber base and grow them eventually by keeping them actively engaged.
How does DKIM alignment affect overall DMARC compliance?
by DuoCircle
DMARC is based on SPF and DKIM results. For an email to pass the DMARC checks, it has to pass at least one of the protocols and have alignment with the domain in the ‘From’ header.
Data accuracy: What is it, and how can authentication protocols help?
by DuoCircle
Every organization thrives on data— whether it is your customers’ details, financial transactions, or some kind of operational records. This data not only tells you about what is going on in your organization but is also crucial to making strategic decisions or even undertaking everyday operations. So, data is essentially the backbone of your organization. But remember, this data is only valuable when it is accurate. Any discrepancy in the information can have a domino effect on basically everything that is going on in your company.
DeepSeek AI Cyberattacks, Health Provider Breached, Telecom Data Impact – Cybersecurity News [January 27, 2025]
by DuoCircle
This week we are back with recent cybersecurity news pieces that highlight an exponential surge in cybersecurity threats proving to redefine the digital realm. Ranging from a leading AI platform limiting signups after a series of targeted cyberattacks, to a healthcare data breach that exposed millions of sensitive information.
Learning to leverage Google Postmaster tools the right way to monitor the performance of your IPs
by DuoCircle
A late 2023 poll found that over half of marketing professionals saw their email marketing ROI double, proving why email has remained a powerful tool since its launch in the 1970s. Now that more brands rely on email marketing for their brand growth, staying relevant in recipients’ inboxes is a challenge. The engagement rate shows positive growth only if your content is meaningful for the receivers. It’s all about figuring out what type of audience likes what and serving them exactly that. (more…)
How to discover source owners using the ‘envelope_to’ domain?
by DuoCircle
An envelope_to domain is the domain of the recipient’s email address. So, if we shoot an email to someone@sample.com, then sample.com is the envelope_to domain. Now, let’s quickly recall what RUA reports are to understand the concept fully. So, RUA or aggregate DMARC reports are XML-based reports that are sent by the receiving server to the email address specified in the DMARC policy. It includes details like-
Have you already implemented DMARC but still think there’s a possibility of phishers slipping your email ecosystem and sending fraudulent emails on your behalf?
![Zip Flaw Exploited, Meta Confirms Spyware, ENGlobal Ransomware Outage – Cybersecurity News [February 03, 2025]](https://www.duocircle.com/wp-content/uploads/2025/02/spf-permerror-6464.jpg)
![DeepSeek AI Cyberattacks, Health Provider Breached, Telecom Data Impact – Cybersecurity News [January 27, 2025]](https://www.duocircle.com/wp-content/uploads/2025/02/spf-record-tester-5454.jpg)
