Email Security

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.

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Are Emails Secure?

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.


DKIM Replay Attack- A New Cyberthreat

DKIM Replay Attack- A New Cyberthreat

 

In DKIM replay attacks, bad actors exploit highly reputed email domains and produce legitimate DKIM keys corresponding to them. The produced keys are then used to bypass DKIM filters and compromise the online security of thousands of recipients. All this is possible because, upon reception, the recipients’ mail servers find no discrepancies in DKIM authentication; hence, the emails are placed in the primary inboxes.

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Why is Sending Forged and Impersonated Emails Easy?

Why is Sending Forged and Impersonated Emails Easy?

 

On average, 3.4 billion forged emails are sent each day, and in the fourth quarter of 2023 alone, 1339 brands became victims of phishing attacks. The number of such instances is increasing year by year because email forging is becoming easier with automated tools, artificial intelligence, cybercrime-as-a-service (CaaS), etc. In fact, as per a report by SlashNext, there has been a 1,265% increase in phishing attacks in the 12 months from Q4 2022 to the end of Q3 2023.

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Decoding Canonicalization: The Reason Behind DKIM Signature Verification Failures

Decoding Canonicalization: The Reason Behind DKIM Signature Verification Failures

Decoding Canonicalization: The Reason Behind DKIM Signature Verification Failures

by Duocircle

 

When you send an email to someone, it embarks on a complex journey before it reaches the recipient’s inbox. While this might seem like a seamless, instantaneous process, it is prone to being tampered with along the way. This is why it is recommended that you implement DomainKeys Identified Mail (DKIM) for your email communications.

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Best Ways to Secure Emails in 2024

Best Ways to Secure Emails in 2024

 

Email communications are sensitive and prone to exploits, as many details and attachments are exchanged. Threat actors look for vulnerabilities in an email ecosystem and develop strategies to compromise them to steal, alter, and intercept financial details, login credentials, medical information, etc.

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Email Security Best Practices in 2024

Email Security Best Practices in 2024

 

The first quarter of 2024 registered a 28% increase in the average number of cyberattacks per organization as compared to the fourth quarter of 2023. While this surge is the aggregation of all types of cyberattacks, the contribution of unsecured emails as a means of exploitation has been massive.

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What is the Difference Between DomainKeys and DKIM?

What is the Difference Between DomainKeys and DKIM?

 

Both these terms sound alike, so some people get confused and use them interchangeably. However, doing so isn’t right. DKIM, which stands for DomainKeys Identified Mail, is a successor to Yahoo’s DomainKey or DK.

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Resolving the Issue of Google Calendar Invites Failing DMARC Checks

Resolving the Issue of Google Calendar Invites Failing DMARC Checks

Resolving the Issue of Google Calendar Invites Failing DMARC Checks

by Duocircle

 

Sometimes, Google Calendar invites don’t pass DMARC authentication checks because when the recipient replies to the invitation, the response is sent back through Google’s servers. Since the ‘From’ address and the originating servers don’t align, the Google Calendar invitation gets rejected as the sending domain’s DMARC policy instructs so.

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Best Practices to Follow When Implementing SPF, DKIM, and DMARC

Best Practices to Follow When Implementing SPF, DKIM, and DMARC

Best Practices to Follow When Implementing SPF, DKIM, and DMARC

by Duocircle

 

We are in 2024, and it’s officially the era of email authentication, especially after Google and Yahoo made it mandatory for organizations to protect their email ecosystem with SPF, DKIM, and DMARC. Now that email authentication has become the new norm; enterprises have no other choice but to level up their cybersecurity game by implementing robust email authentication protocols. 

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Understanding PTR DNS Records for Emailing

Understanding PTR DNS Records for Emailing

 

If you have a website’s IP address and don’t know its domain name, you would need to perform a PTR lookup. A PTR record, which is short for a Pointer Record, is the opposite of an A record; an A record translates domain names into their corresponding IP addresses, and a PTR record translates IP addresses into their corresponding domain names. 

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How to Add SPF and DKIM records in GoDaddy?

How to Add SPF and DKIM records in GoDaddy?

 

SPF and DKIM collectively prevent you from email spoofing and phishing while also ensuring nobody tampers with messages in transit. To get started with them, domain administrators have to create their respective records and add them to their domain’s DNS. 

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Learning to Set Up SPF, DKIM, and DMARC For Klaviyo

Learning to Set Up SPF, DKIM, and DMARC For Klaviyo

 

As of June 30, 2023, Klaviyo has assembled over 6.9 billion consumer profiles across its customer base, placing it as one of the most used platforms for marketing automation for email marketing, SMS, and CDP. Taking these growth factors into consideration, we are sharing the email authentication guide for Klaviyo users so that they stay abreast of phishing and spoofing attackers.

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How AI-Powered Email Solutions Can Level Up Security Teams

How AI-Powered Email Solutions Can Level Up Security Teams

Listen to this blog post below

 

In the face of AI-powered malicious tools utilized by adversaries to undermine email security, traditional methods employed by security teams often fail to meet the demands of modern cybersecurity. Given this challenging environment, the only viable option at this juncture seems to be the adoption of AI-based solutions tailored to combat these emerging threats.

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