When it comes to email authentication standards, should you use DKIM, SPF, or both? We’re going to cover these terms, when you should use them, what they do—and how best to protect your email domains.
Is it Either/Or—or Both?
Should the battle really be SPF vs. DKIM? While not mandatory, it’s highly recommended to use both SPF and DKIM to protect your email domains from...
In this DKIM setup guide, we’ll walk you through the steps on how to set up DKIM correctly, test it, avoid common pitfalls, and fix common mistakes. In case you’re new to DKIM, or DomainKeys Identified Mail, we’ll start with a high-level overview before getting to the step-by-step instructions, but you can first look up your DKIM record here.
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Have you ever received a blank email from someone you don’t know? If you have, it may have been from a cybercriminal making sure your email account is legitimate prior to a Business Email Compromise (BEC) attack. Agari and PhishLabs define BEC as any response-based spear phishing attack involving the impersonation of a trusted party to trick victims into making an unauthorized...
Wondering what Brand Indicators for Message Identification actually means? Here, we’ll cover the basics of BIMI, what the BIMI-selector header is, what it does, whether you need it, and how to implement it. But first, do you really need the BIMI-selector header? In most cases, you only need the BIMI-selector header if you want to support multiple logos for multiple brands or...
What is email spoofing, how does it work, and why is it so dangerous to your company? We’ll explain everything you need to proactively stop attackers from spoofing your email address.
Email Spoofing: What Is It?
Email spoofing is when a fraudster forges an email header’s ‘From’ address to make it appear as if it was sent by someone else, usually a known contact like a high...
We'll cover what DKIM for email is, why your company needs it, how it works, how to set DKIM up, and additional ways to prevent email spoofing attacks.
What is DKIM?
First, let’s clarify what DKIM is in email. DomainKeys Identified Mail is a technique that uses your domain name to sign your emails with a digital “signature” so your customers know it’s really you sending those...
Amid a troubling rise in zero-day phishing attacks, recent research suggests that some companies may be making an ill-advised shift away from blocking advanced email threats to responding to them post-delivery. If true, the capitulation couldn't come at a worse time. Since January, cybercriminals taking advantage of the COVID-19 outbreak have been targeting businesses and...
Are you protecting your remote workers against an endless barrage of COVID-19 related phishing attacks by requiring 2-factor authentication (2FA) to log into employee email accounts? Smart move—just don't let it give you a false sense of security.
Since the beginning of February, we have seen more than a 3,000% increase in Coronavirus-themed phishing attacks targeting our customers. The spike in attacks is as logical as it is repugnant. With an estimated 75 million employees more reliant than ever on email during the largest "work-from-home experiment" in history, phishing scammers and other threat actors seem hellbent...
At Agari we often talk about the evolving nature of advanced email attacks and the identity deception tactics that go with them. These attacks bypass legacy controls and like a magician delighting a curious audience, they trick the human psyche by targeting core human emotions such as fear, anxiety and curiosity. Of course, the magic in this case comes with ill intent.
A good...
This post originally appeared on the Armadillo Blog and has been lightly edited for clarity.
Most organisations have been successful in blocking malicious emails targeted at their employees, at least to some extent. Various on-premise and cloud providers exist to take care of anti-spam, anti-virus, reputation scores, and advanced features such as sandboxing of executables.
As...
Are you sending Google Calendar invites and not getting replies, or maybe your invitees tell you they tried to reply and it was blocked? Or maybe you are trying reply to Google Calendar invites and being blocked saying the mail is not accepted due to your domain's DMARC policy?This is an issue I have been seeing, so I did some digging and I have figured out what is going on....
Every year, more than 5 million homes are bought and sold in the U.S. Given this volume, it should come as no surprise that the real estate industry is a prime target for email-based crimes. Cyber criminals are spoofing (and in some cases taking over) the email accounts of real estate agents, title companies, and others involved in the home buying process. Once the criminal...
In the last five years, we’ve all become far too familiar with it – hackers spoofing a company’s domain and therefore tarnishing the brand, bad actors attempting to infect our computers with malware, and criminals sending millions of spam messages.
As if this isn’t enough, now there is a whole group of people working to outsmart companies AND their customers by using cousin...
When you begin to work with DMARC, you realize just how important identifier alignment is. Identifier alignment forces the domains authenticated by SPF and DKIM to have a relationship to the "header From" domain. Header From Domain and the MailFrom domain are different?Yes, they are! Hearing these terms can confuse people. They sound like the same thing, but in reality they are...
This is the second in a new ongoing series for us that gives you the tips and tricks you need for successful DMARC deployment . Read the previous tip here. DomainKeys Identified Mail (DKIM) is the successor to Yahoo DomainKeys. Both share similarities, however DKIM has the additional aspects of Cisco's Identified Internet Mail standard (IIM). The enhancements to this standard...
The Benefits of Monitor Mode
When a technology exists that can tell you if and when your domains are being spoofed (and by who), why would you not use it?!
What is DMARC?
DMARC was created to address some fundamental problems with existing email authentication technologies (SPF and DKIM). It provides feedback about your email authentication implementation and gives ISPs ...