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Measures against spoofing emails, specifications for email encryption: What is SPF?

Register your legitimate email server for your own domain! Introducing examples of operation and limitations.

On our company website, we introduce measures against spoofing emails and the specifications for email encryption. "SPF (Sender Policy Framework)" is a specification that explicitly notifies the receiving MTA of the authorized MTAs by listing the MTAs that can send emails using the email addresses of the managed domain as DNS records. By setting up an SPF record, the receiving mail server can determine whether the email was sent from a legitimate mail server when it receives the email. Please refer to the related links for more information. [Contents] ■ Examples of operation ■ With only SPF settings, how to handle processing is left to the receiving mail server ■ If the sender wants to control the processing, DMARC settings are necessary ■ Is MX record not sufficient? ■ Limitations of SPF ■ Examples that cannot be prevented by SPF records alone *For detailed information, please refer to the related links. For more information, feel free to contact us.

  • Other security systems

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What is farming and how can it be prevented?

An attack that rewrites routes at the DNS level! Knowing how to prevent it is even more important.

Farming is a type of cyber attack that is difficult to track due to its complex setup. According to the definition of farming, it is an attack where the threat actor redirects users to a malicious website that appears to be a legitimate one, compromising their data. In September 2021, over 50 financial institutions fell victim to sophisticated farming attacks targeting online customers in the U.S., Europe, and the APAC region. For three days, until the farming malware was recognized and stopped, approximately 1,000 devices were infected each day. Incidents like this highlight the importance of understanding what this type of attack is and how to prevent it. Read this blog to learn all about this modern cybercrime. *For more details, you can view the related links. Please feel free to contact us for more information.*

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[Blog] What is DNS Spoofing?

A very inconvenient situation for both website visitors and owners! Introduction to the blog.

What is DNS spoofing? DNS spoofing is a commonly used attack method to deceive companies. DNS itself is never completely secure. It was designed in the 1980s, a time when the internet was still a novelty, and security was not a major concern. As a result, malicious individuals have taken the time to exploit this issue and develop advanced DNS-based attacks such as DNS spoofing. *For more details, you can view the related links. Please feel free to contact us for more information.*

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What is caller ID spoofing?

Answering various questions such as what caller ID spoofing is! Introduction to the blog.

Caller ID spoofing is when a caller uses technology to make their phone number appear as someone else's, such as another person or company. The caller may do this for various reasons, such as hiding their identity, avoiding unwanted calls, or making it look like the call is coming from a more trustworthy source. This article will answer various questions about what caller ID spoofing is, among other things. Please take a moment to read it. [Contents (Excerpt)] ■ What is caller ID spoofing? ■ Examples of caller ID spoofing: Actual attacks and incidents ■ How is caller ID spoofing carried out? ■ How is caller ID spoofing dangerous? ■ Spoofed calls: What should you look out for? *For more details, you can view the related links. Please feel free to contact us for more information.

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[Blog] What is IP Spoofing?

Reasons for IP spoofing and countermeasures! Information on spoofing countermeasures introduced in the blog.

What is IP spoofing? In simple terms, it is when a user or program attempts to send packets using an IP address that is not authorized for use. It is also called IP address spoofing, and its purpose is to masquerade as a legitimate source IP. This is the official definition, and there are many factors that can effectively cause IP address spoofing. [Contents (excerpt)] ■ What is IP spoofing? ■ Why do hackers perform IP address spoofing? ■ Types of IP spoofing ■ How to detect IP spoofing ■ How to protect yourself from IP spoofing? *For more details about the blog, you can view it through the related links. Please feel free to contact us for more information.

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[Data] Settings, Audit, Analysis, Counter Services 'PowerDMARC'

Reporting and threat analysis, DKIM third-party authentication! Information on its value and support system is included!

This document introduces the anti-phishing email measures, settings, audits, analysis, and counter services provided by 'PowerDMARC'. It covers issues related to email, the differences between SPF & DKIM vs S/MIME, and data privacy with PowerDMARC. By setting the report email destination to this service, XML parsing can be performed to generate graphs and analyze IP addresses. [Contents (partial)] ■ Phishing emails used as attack tools ■ Emails that do not arrive ■ PPAP issue ■ Technical specifications ■ SPF (Sender Policy Framework) *For more details, please refer to the PDF document or feel free to contact us.

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[Blog] How to Stop Spoofed Emails from My Email Address?

Introducing email authentication protocols! Here's how spoofed emails can cause harm.

Spoofing is one of the common types of attacks. Fraudsters love to hijack the names and email addresses of email networks (such as Hotmail and Gmail) to send thousands of fake emails that appear to come from someone you know (like CEOs or executives from competing companies). Let's make sure that identity thieves do not spoof your email address. This article explains how to protect yourself from spoofing emails and why it is important to pay attention to this serious information security threat. [Contents] ■ Spoofing Emails: What are they? ・How do spoofing emails cause harm? ・How can you stop spoofing emails that are continuously sent using your email address? *For more details about the blog, please refer to the related links. Feel free to contact us for more information.

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[Blog] What is spear phishing?

Phishing targeting specific individuals or organizations! We introduce what is necessary to protect yourself in our blog.

Do you know what spear phishing is? If you've ever used the internet, you might be familiar with it. Among various phishing scams, spear phishing is a common attack method, and currently, 65% of all recognized attackers are utilizing it. Unfortunately, the weak point in phishing countermeasures for most companies lies with their employees. Don't know what spear phishing is? This article is perfect for you. Please take a moment to read it. 【Contents】 ■ What is the mechanism of spear phishing? ■ The growing threat of spear phishing attacks ■ What is necessary to protect yourself from spear phishing? ■ Conclusion *You can view the detailed content of the blog through the related links. For more information, please feel free to contact us.

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[Blog] What is Email Display Name Spoofing and How to Prevent It?

Display name impersonation spreading through phishing scams! We introduce the reasons and more in our blog.

Email display name spoofing is a type of social engineering attack that alters data to illegitimately change an individual's perception. Spoofed emails can lead even honest employees within an organization to believe they are communicating with the CEO or other senior executives. Extremely sophisticated spoofed emails can deceive even those who are supposed to check for them due to their authentic appearance, making them accepted in most cases. [Content Overview (Excerpt)] ■ What is display name spoofing? ■ Why is "display name spoofing" spreading through phishing scams? ■ How to avoid becoming a victim of email display name spoofing? *For more details, please refer to the related links. Feel free to contact us for further information.

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[Blog] Measures Against Spoofing Emails

DMARC is a key measure against spoofed emails! We will introduce how to identify them in our blog.

Email spoofing is a type of internet fraud. Hackers impersonate someone else and send emails, using these fake emails to get recipients to open attachments or click on links. This is done in two ways: by stealing your email address or by creating a fake email address that resembles yours. Email spoofing occurs for various reasons, but one common reason is to get the recipient to click on links that lead to websites designed to download malware or viruses onto their computer. In this way, attackers can steal your login information for your bank account and other financial accounts. *For more details about the blog, you can view it through the related links. Please feel free to contact us for more information.*

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