The use of emails has always been increasing ever since its inception in the 1960s. Business communication, circulation of academic information, conveying personal information – almost everything is passed on between individuals or organizations via emails mainly for either or all of the following reasons:
Emails are faster.
Emails are reliable.
Emails ensure that the information reaches the end recipient and, if not, notifies the sender about it.
There is no scope of data loss with emails.
Emails are an excellent means of recording information chronologically.
On the surface, there is nothing to be concerned about in email communication. The accounts of both the sender and the receiver are self-operated and locked by passwords which only both of these parties know. However, with the advancement of useful technology occurs an equal (if not higher) rise in technology which brings vicious attackers and hackers into the picture.
What Is Phishing?
Phishing attacks are just like fishing in a river where a person tries to get hold of a fish by giving it a believable bait of a bread crumb or any similar bit of food. However, in phishing attacks, the fishes are the netizens, and the fishermen are the cyber attackers. Phishing attacks are most commonly circulated via email messages. In such attacks, an unexpected mail from a seemingly credible source asks the receiver to take specific immediate action (such as paying unpaid dues or claiming a reward) by clicking on an attached link or downloading a file. But these are impersonating emails taking the user to fake websites created by the attacker. And often, these install malware into the computers of users. These attacks also happen in other forms like through voice messages (Vishing), SMS frauds (Smishing), attacks targeting the big shots of an organization from whom the profits can be maximum (Whaling) or creating a replica of a website to win the trust of an unsuspecting user (Pharming).
What Is Malware?
Malware is another means used by attackers to install corrupt files and software into the computer systems of users without their permission or against their will. Often malware operates secretly and steals the private information of users without their knowledge. This information is then accessed by the attacker who either uses the data to blackmail the victim, launch a sextortion campaign, or sell the stolen details at a high price in the dark market. Its types include:
Ransomware – which locks the system of the user or encrypts files until the demanded ransom is paid.
Spyware – which launches spying software into the computer and steals data.
Scareware – which attempts to extract user information by instilling fear in them.
Adware – where malware gets downloaded via attacker-created fake advertisements.
What Is Email Security?
Email security is the process of shielding email accounts from the attacks of vicious hackers. It refers to the means employed by a user, an organization, or an information network to keep themselves secure from these phishing attempts and malware attacks.
How To Ensure Email Security?
Email security can never be a fool-proof plan as the attackers always manage to find some loophole even in the most sophisticated methods of protection. However, minimizing such attacks is the objective, and this can be achieved by adopting the following measures:
Setting strong passwords: Strong passwords with alphanumeric characters and symbols are highly recommended. It’s always more important to have secure passwords instead of easy to remember passwords.
Changing passwords from time to time: Using the same password for too long makes you more vulnerable to hacking attempts of attackers. Hence it is always advisable to change passwords from time to time. Also, having different passwords for different accounts is a smarter decision than otherwise.
Having a good antivirus installed: Antivirus software creates a layer of protection against all types of viruses and malware trying to attack your devices. It is a must to have an antivirus when you visit multiple websites on the Internet or install external devices and disks into your computer.
Having anti-spam filters: Anti-spam filters ensure that spam emails or messages do not show up in your mailbox, thus protecting your system from the malicious emails sent by attackers. It also saves you a lot of time and energy that gets wasted otherwise in opening those emails.
Using only updated software: Software developers update software from time to time to incorporate patches and other improvements to make the software secure and more efficient. Not updating one’s software to the latest version is sending an invitation to attackers to steal your files.
Being wise on the web: With everything said and done, the most frugal tip remaining is to be careful on the Internet. One must have a skeptical mind and halt before impulsively clicking on links and pop-ups. A click takes hardly a second, but often its after-effects cost millions of dollars!
Since one cannot do away with emails, one needs to find ways and means of doing away with the threats to email security. Protecting yourselves on the web is not easy but also not unachievable. Taking specific preventive measures goes a long way in keeping attackers and malware away.
What is digital adoption and how is it improving email deliverability in 2024?
by DuoCircle
Digital adoption means using new technologies, tools, and systems to make various processes more efficient and less time-consuming. There are tons of apps and software that do so many things that we don’t have to do manually. For example, Whatfix is a Digital Adoption Platform (DAP) that helps organizations implement new CRM systems quickly and get accustomed to the new software with minimal disruption. For companies implementing internal tools like HR or accounting software, Userlane ensures users can navigate new platforms without formal training sessions.
How to add a DKIM signature for your domain in Zoho?
by DuoCircle
Once you have created a DKIM TXT record in your domain’s DNS manager, you can turn on DKIM for your domain from Zoho Mail’s control panel. DKIM configuration happens in 3 steps. Let’s see how these steps unfold to inform recipients if the email content was altered in transit.
In 1989, a group of unsuspected attendees at a World Health Organization conference received around 20,000 floppy disks. This incident went down in history not because of any scientific breakthroughs but because it heralded an all-new era in cybercrime—ransomware. Fast-forward to today, and ransomware attacks have transformed into a billion-dollar criminal enterprise, targeting not only the big giants but also small businesses and individuals.
Email deliverability is one of the primary factors in deciding whether your day-to-day emails and specially curated email campaigns will land in your inboxes or get marked as spam. There could be several reasons your email deliverability is low, including the “550 5.7 0 Email Rejected Per SPF Policy” error code.
What are email feedback loops and how do they work?
by DuoCircle
Email feedback loops are the significant mechanisms that notify senders about spam complaints. Your sender’s reputation plays a huge role in deciding whether a recipient’s mailbox will place your email in the inbox or spam folder or reject its entry. This is where email feedback loops step in and help you monitor your complaint rates so that you can take corrective measures for protecting and improving your domain’s sender reputation. Some of the common corrective measures are changing the way you write email content, using a better subject line, removing dormant subscribers from the list, providing an easy one-click unsubscribe option, etc.
Learning to avoid breaking up the Google Workspace DKIM setup
by DuoCircle
Enabling DKIM on Google Workspace is a two-step process but most people stop after completing the first one only. If that’s what you have also done, then please know that in such scenarios, DKIM and DMARC will function normally, and there won’t be any impact on email delivery, failing to complete the second step will compromise your email security. However, DKIM will fail to authenticate emails using your custom domain, causing communication problems at multiple levels.
Understanding the process and importance of hashing in DKIM
by Duocircle
DKIM was created in 2005 to help recipients determine if someone has tampered with the email content in transit. The protocol is broadly based on the concept of cryptography, which ensures the authenticity and integrity of an email message by using a public key to sign the outgoing emails for your domain. In DKIM, hashing is an important step in creating a secure signature for email integrity and authentication. Let’s see how hashing works.
DKIM is a cryptography-based email authentication protocol that ensures that only authorized people send emails on your behalf and that nobody changes the content of the message in transit. Salesforce highly encourages its users to deploy SPF, DKIM, and DMARC to protect their domain and email receivers from getting duped. Salesforce has also made it quite straightforward to integrate and configure DKIM so that most of your outgoing emails land in the inboxes of recipients and not their spam or junk folders. With DKIM, the chances of your emails getting marked as spam go down significantly.
TLS, which is short for Transport Layer Security, is an email security protocol based on cryptography. It facilitates the end-to-end security of data transmitted between applications over the Internet. Most people know it as the padlock icon that appears in web browsers when a secure session is established. But there is more to it—it’s also used in emails, file transfers, video and audio conferencing, instant messaging, and voice-over IP. The overall aim of the TLS is to add an extra layer of security, preventing threat actors from hijacking connections between internet-enabled devices. It lets you know whether the person you are communicating with is actually who they are claiming to be.
You might have heard that you do not necessarily need all three email authentication protocols— SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance) to create a foolproof defence strategy for your email ecosystem. But here’s a truth that these custodians of security do not tell you: achieving a 100% foolproof email security strategy is very challenging, if not impossible, and you need a multi-layered approach that covers all the bases and helps you stay ahead of these attacks.
Here’s a question for you: how much security is too much security for your emails? Before you try to answer this question, we would like to remind you that email security threats like phishing, spam, ransomware, malware, and spoofing are not only becoming more frequent but also more grave. The kind of impact these attacks have on the target is often devastating, including financial loss, data breach, and legal consequences. With these threats looming over your email ecosystem, you need a mechanism that is robust and hardy.
Emails were and still are a crucial tool for business communication and marketing.
A report by Statista revealed that in 2023, about 347 billion emails were sent and received globally daily. That figure is projected to increase to about 392 billion daily emails by 2026.
SPF=fail, but the recipient’s mailbox has not quarantined or rejected the email- why?
by Duocircle
When an email shows ‘SPF=fail’ but is not blocked by an antispam filter, it can be due to several reasons. Knowing and fixing the issue is important; otherwise, threat actors can exploit the security gap by sending fraudulent emails in your business’ name.
Enabling Microsoft’s Exchange Online Protection (EOP) phishing policies using the Microsoft Defender portal
by Duocircle
There is a default anti-phishing policy that is applied to all recipients, but it’s better to create custom policies for better protection. To configure the anti-phishing policies, you need to be assigned permissions in the Microsoft Defender portal. If you have the required permissions, you are good to go ahead and make modifications.
Why does RFC impose the character limit on SPF records?
by Duocircle
As per RFC, if an SPF record has more than 255 characters, then it will be invalid. This simply means that such an SPF record would give false positives and negatives– neither of them works in favor of your domain.
Understanding the relevance of Secure Email Gateways (SEGs)
by Duocircle
Secure Email Gateways (SEGs) are like your email infrastructure’s personal security guards. They ensure only safe and legitimate emails go out from your company, keeping it protected from email-based attacks. The overall practice of deploying SEGs prevents the distribution of malware and phishing attempts through emails, instills trust in your clients and prospects, helps you stay compliant with industry standards, and, most importantly, wards off litigations and financial damages.(more…)
Everything you should know about obtaining a Verified Mark Certificate (VMC)
by Duocircle
When it comes to ensuring the success of your email campaigns, something that is just as important as the content of the email is the trust it inspires in your recipients. The way the receivers and their mail servers perceive your emails tells a lot about your brand’s identity and credibility.
Learning to perform SPF delegation for enhanced email delivery
by DuoCircle
The SPF delegation method is for domain owners who authorize an external email server to send emails on their behalf without having them fail the email authentication checks. This requires you to make some alterations to the existing SPF record.
The risk of cybercriminals intercepting your emails and tampering with them is perpetual. But there’s a way to mitigate this risk and make sure that your emails are delivered unaltered without any malicious interference. Implementing DKIM or DomainKeys Identified Mail is your masterstroke against email tampering and spoofing. It relies on cryptographic techniques to sign your emails, allowing recipients to verify that they truly originate from your domain and have not been messed with.