[2021 latest version] Comparison of 10 recommended email encryption software!How to choose

As the exchanges of emails are increasing due to teleworks, etc., the importance of encryption of emails is increasing.When sending materials by e -mail, the file is compressed and sent with a password, and a method called "PPAP", which sends the password required for unzip by another email, may be used, but the attached password has been eavesdropped.There is no source or child.

In this article, we will introduce an email encryption service that realizes a stronger email security.

1. Risk of familiar attached password
2. Use urgent use of email encryption software
3. What is email encryption software?
4. 10 comparison of email encryption services that can be introduced immediately
5. How to choose email encryption software
6. summary

Risk of familiar attached password

It is said that the "PPAP" method that is generally used is not meaningful in fact.In November 2020, the Minister of Digital Reform Hirai announced that the PPAP would abolish the PPAP by e -mail from the Cabinet Office and the Cabinet Secretariat.。

Why is the method of setting a password in the zip file and attaching an email?One of the factors is the security of the email itself.If the email itself is eavesdropped, there is a risk that the attached password will be eavesdropped, and if you analyze it, everyone will be able to view it.Therefore, the email itself needs to be encrypted.

Use urgent use of email encryption software

In the business scene, the opportunity to exchange information that should not be leaked, such as important documents and personal information, is increasing.Even if you build a system for sharing files throughout the company, it is difficult to take a drastic measures because emails are established in exchanges with outside the company.

Therefore, the introduction of e -mail encryption software that can firmly ensure email security is rushing.If the email itself can be automatically encrypted and transmitted and received, it is possible to take measures to eavesdrop on emails and incorrect transmission without burdening the user.This article introduces the email encryption service that is easy and easy to use and can be used immediately.

What is email encryption software?

Among the information security measures in companies, it is very important to send and receive email.By introducing "Email encryption" software, you can encrypt the email body and the mail attached file in various methods such as public key encryption method and password encryption method.Even if the encrypted emails and attachments are eavesdropped by a third party on the communication route (on the Internet), the risk of decoding and grasping the contents is extremely low, so information leakage can be prevented.It is.

In addition, the email encryption software service provides not only encryption but also a mechanism to prevent "accidentally misplacement", and a mechanism that allows the attached file to be separated from the mail itself and downloaded separately.It is possible to make email security a more stone.

10 comparison of email encryption services that can be introduced immediately

"Mail Dealer" Lux Co., Ltd.

In addition to sending e -mails, you can manage and browse inquiries all at once, enhancing work efficiency and improving customer satisfaction.

The point is that the attached file is automatically converted to a zip file with a password and has a download URL issuance function that allows you to obtain files without attaching it to the email.You can also check the download deadline and check the downloaded history, so you can control it with security settings even if the URL is leaked.

In addition, there is also a "incorrect transmission prevention check setting" that can not be sent without any prior check, and it will prevent incorrect transmission by double check before transmission.

"Ciphercraft/Mail" NTT Techno Cross Co., Ltd.

AI analyzes behavioral patterns that are likely to occur in erroneous transmission, based on the vast information of the past.In the human eye check, the contents that are easy to miss are automatically detected.

Attachments are automatically password and sent to the other party at the time of transmission.In the encryption method, it can be selected from the public key encryption method and the password encryption method (ZIP, AES, Camellia, etc.).By combining the object of encryption and the method, it is possible to match the email environment of the other party.

The e -mail text is also automatically encrypted by the selected encryption method, so it is possible to easily exchange security measures.

"Simple Mail" GMO Global Sign

Since you only need to connect the email server you are currently using with a simple mail, there is no need to move the server when introducing it.Even if you use multiple users, you can contract at a fixed fee (from 10,230 yen per month).The initial cost is 0 yen, so it is recommended for those who want to introduce it easily.

It also has a reliable log management function, and will allow you to delete files before being downloaded even if you mislike e -mail.Even if you do not have expertise, you can set the UI operation from the management screen, improving security in the transmission email of everyone in the company.It is also possible to cooperate with Google Workspace, so you can easily reinforce the security standards of G mail.

"Email Zipper" LRM Co., Ltd.

It is simple and reasonable, but has basic security functions, enabling smart operation by selecting the necessary functions as much as you want.

Just send an email in the same procedure as usual, not only the download URL issuance function of the attached file that is temporarily stored on the cloud, the approval of the upper length before sending, and the BCC automatically add the upper -chief email address.And it is easy to improve security standards.

There is also a 60 -day free trial that allows all functions, so it is a recommended service for those who want to use it first and consider introduction.

"Active! Gate SS" Quality Co., Ltd.

By working with seven incorrect transmission prevention functions on the way through the mail server, the security of the company in email transmission can be dramatically improved.

Not only web downloads, BCC forced conversion, file encryption, supervision approval, temporary holding and transmission refusal, but also when a mistake is discovered by e -mail due to time parallaxing, it can be taken before reaching the other party.To

Companies that have already used cloud mails, such as Microsoft365, Gmail, and LINE WORKS, have realized secure operation with cloud mail by linking with Active! Gate SS.Flexible reinforcement of corporate security.

"Terrace Mail Security" Connectivo Co., Ltd.

All -in -one security functions such as blocking spam and viral emails, blocking spam and viral emails, blocking ransomware and targeted mail (APT attack), and recovery from emails are provided all -in -one.

In addition, it is possible to specify in a variety of combinations just by setting the encryption of sending email, and only the attached file can be used according to the usage scene, such as encryption and encryption over the entire mail.

Since the settings can be managed centrally, it reduces the burden on the operation and enables excellent cost performance as a result.

"FENCE-MAIL FOR GATEWAY" Fujitsu Co., Ltd.

This service is recommended for improving email security in an on -premises environment. It is possible to output not only basic functions such as the attached file URL download and the encryption of the email text, but also the CSV output of the mail transmission history by log management.

The audit function to check the security policy of email transmission also checks not only checking the destination, but also personal information such as the name, credit card number, and My Number.

In addition, if the address or text of the destination is matched with the template of the prepared fraudulent email, the alert will be displayed on the screen, so it is safe because it can prevent the damage of business email fraud.

* Microsoft365 must be introduced separately to use the URL download function.

"Certificate for S/MIME" GMO Global Sign Co., Ltd.

S / MIME (Secure / Multipurpose Internet Internet Mail Extensions) is one of the e -mail encryption methods, encryption and electronic signature using an e -certificate.

If you use an e -mail using a digital certificate between the sender and the recipient side, it will not leak confidential information because it is difficult to decipher even if you are eavesdropping by a third party.

Also, if you have an e -mail with an electronic signature, the recipient can identify whether the sender is genuine.It is safe to prove that the text of the e -mail is the same as when sending, and if the falsification is detected, the warning will be displayed in the mail software itself.

"SPIS-BOX +CRYPT" Katyke Solutions Co., Ltd.

By automatically processing the encryption process of emails on the server on the network, it is not only the hassle of encrypted each time an email is sent, but it also eliminates human errors such as inadvertently encryption.It will be done.

The digital certificate required for encryption can be managed in bulk on the server, and there is no need to register or manage complicated client units.

The encryption method adopts an international standard S/MIME method, and can be used with e -mail software such as Outlook and Thunderbird, which are used by many companies.There is no need for dedicated software, so you can use it without being aware of the other party's environment.

"Mail Safe" SB Technology Co., Ltd.

In many cases, misplacement of emails is basically caused by human mistakes, and there is a limit to covering only by operation, so it is essential to take measures on the system side.

Mail Safe checks the contents of the send -mails one by one to make detailed measures for information leakage and incorrect transmission, such as temporarily holding and refusing to send, attaching attachments, and web downloading, automatically.Process.

In addition to prohibiting email sending, including personal information, it has an approval system that your boss always confirms important emails.In addition, it is possible to set the policy for each user flexibly, but also operate a proprietary rule, such as a person other than the superior can confirm and approve emails.

* The only mail service that Mail Safe can be applied is Office 365 Exchange Online.

How to choose email encryption software

There are various options for email encryption software, from relatively simple ones that can be used for free to multifunctional for paid and monthly.

Here are some points you want to check to choose one that is suitable for your company, and a reliable thing that is suitable for your company from a variety of email encryption software.

1 Make sure it supports multiple encryption methods and encryption technology

Various methods are used to encrypt emails and attachments, but roughly divided into the following two types.

・ This is a method that uses the same password (key) when encrypted common key encryption method (ZIP, AES, etc.) and when complexing.While there is a merit that the processing speed when encryption is relatively fast, there is a disadvantage that the key is needed as the number of exchanges and the trouble of managing it increases.

・ Public key encryption method (RSA, etc.) Use different passwords (keys) when encrypted and complex.The sender is encrypted with a common password called the "public key" prepared by the receiving side, and the receiving side performs a composite with a unique "private key".While there is an advantage that both the transmitting side and the receiving side have no need to manage multiple passwords, there is a disadvantage that the processing speed when encrypted is relatively time -consuming.

Apart from the above -mentioned story, there are SSL/TLS and PGP/S/MIME methods as encryption technology.

If the email encryption software to be introduced supports various methods and technologies, it will be possible to select each time depending on the needs of the other party and the needs of the company, so it will be more convenient.

2 Choose in consideration of the affinity with the existing internal system

Check out the official information of each software about the affinity (such as compatibility and cooperation of movement) with the mail software service that the company is using.Considering the future, it is safer to support a variety of software services besides the email environment currently used.

3 Check the introduction case and share rate

Each official website of the email encryption software may provide an introduction case and share rate.In order to make your email security strong, check it out as one of the trusted soft services.

summary

Now that telework has become widespread, it is urgently needed to ensure safety in corporate email management.Use the e -mail encryption service to make sure that security measures are thoroughly considered and consider the introduction now to prevent incidents such as information leakage.