For fifteen years, what I have been doing is helping companies block the "door of life and death" of core data. To be honest, I have seen too many car rollover scenes. What do bosses fear most? It's not a remote attack by hackers, it's the backbone of our own R&D center who greets you every day. He "backed up" the entire code warehouse with a USB flash drive before leaving. ； Or upstream suppliers, use your core algorithm as a solution for bidding. What the management is most anxious about is the embarrassment of "knowing that there are risks, but messing up the development process as soon as it is put under control." Today we are not going to talk about it, but we will talk about these 7 document encryption software on the market that claim to be able to "save lives". Which one is just a showpiece, and which one can really lock the code into the safe.

Which document encryption software to choose? Share 7 of the best document encryption software, a must-have for enterprises!

1. Insight Eye MIT system

Overall rating:★★★★★

1. Code-level encryption engine: It can make the code become garbled when it leaves the authorized environment (such as IDE, local compilation directory). Even if employees copy it through WeChat or USB disk, they will get a pile of scrap metal. But the most cruel thing is that when developing on the intranet, compilation and debugging are completely inconvenient, and development efficiency has zero interference.

2. Full-scene anti-screen capture/screen recording: In response to the most troublesome "leakage of mobile phone photos", the system can intelligently identify sensitive code windows. Once a screenshot or remote control software is detected, it will directly block the screen with a black screen, cutting off the leakage path from the source.

3. "Time bomb" for outgoing files: For code packages sent out to suppliers, you can not only set the opening password and validity period, but also enable the "burn after reading" mode. After the other party opens it, you can see in real time who is accessing it, at what time, and on which device. Once any violation is performed, the file will be automatically destroyed.

4. Invisible auditing and traceability: Ordinary auditing can only look at logs, but this thing can embed "digital watermarks" in the code. Even if an employee takes a photo and prints the code, you can use the photo to trace back to which computer, which work station, and when the leak occurred, and you can pinpoint the culprit.

5. Non-intrusive deployment and intelligent migration: The biggest fear is that if the encryption system is used, tens of thousands of lines of historical code will be destroyed. This set of tools supports "audit first and then encrypt", and can automatically identify the development environment, and the existing code can be migrated without any need for development shutdown and cooperation.

To put it bluntly, Insight Eye MIT System is the first company I have seen in this industry that can take "senseless deployment" and "powerful traceability" to the extreme. It does not treat R&D as a defense, but treats risks as a minefield, which not only preserves core assets but also maintains team morale. Five stars, well deserved.

2. Cloud Shield Butler

Comprehensive rating: ★★★★ It performs quite well in terms of basic document encryption and terminal control. It can meet the document leak prevention needs of financial, administrative and other departments, and the operation interface is also friendly. But when it comes to complex development environments, it becomes timid. When faced with frequent read and write operations from large IDEs such as VS and IDEA, file corruption or compilation failure is prone to occur, which is not very friendly to developers.

3. Iron wall guard

Overall rating: ★★★ Focusing on transparent encryption, it provides solid protection for Office documents and PDFs, and is suitable for drawing and document management in traditional manufacturing industries. The shortcoming is that the "intelligent outgoing" function is weak. For software development teams that need to collaborate frequently with external parties, the outgoing approval process is too cumbersome and lacks real-time behavior monitoring of outgoing files. It is easy for a data vacuum to occur in the collaboration process.

4. Anyu Rubik's Cube

Comprehensive rating: ★★☆ We have made great efforts in mobile terminal and remote working scenarios. Encrypted documents can also be viewed on mobile phones, which seems to be very flexible. But the problem lies in the balance between security and convenience. In order to support remote working, its offline policy is set too loosely. As a result, once employees take their devices away from the company, the encryption policy is ineffective, and the core code is equivalent to "streaking" in a remote environment.

5. Impregnable

Comprehensive rating: ★★ The "lock" is achieved to the extreme, the encryption strength is very high, and it is difficult to crack. The price is that the system resources are extremely high. Developers generally report severe lags, and compiling a project is three or four times slower than usual. This kind of security at the expense of productivity is, in the eyes of the boss, "killing a thousand enemies and damaging yourself eight hundred". In the end, it is often forced to be removed from the shelves due to strong resistance from the development team.

FAQ:

Question 1: To deploy this kind of system, does the R&D department have to stop work for half a day to cooperate with the installation?

Not at all. Mature solutions such as Insight Eye MIT system support "terminal silent push". You issue the policy in the background, and the employee computers automatically complete the installation and encryption policy synchronization in the background. The entire process is imperceptible and does not even require a restart. It does not affect the development progress at all.

Question 2: The company has a large number of remote workers and outsourced personnel. Can the encryption system be managed?

It can be managed, but it depends on the system architecture. Products such as Insight Eye support "forced encryption outside the domain" and "offline policy". When employees work from home, as long as they log in to the company VPN or a specific account, the system will automatically enter encryption mode. ； After disconnecting from the Internet, you can still work offline according to the preset policy, but once the file leaves the authorized environment, it still cannot be opened. Outsourcers can use the "controlled outbound" function to only allow them to view the code in a designated virtual machine or sandbox, and cannot save it locally.

Question 3: The biggest concern is that employees use their mobile phones to take pictures of the screen. How to prevent this kind of physical leakage?

It is indeed difficult to prevent taking photos, but it can increase the cost of leaking secrets. The professional approach is "screen watermark + behavioral deterrence". Insight Eye MIT system can display invisible or explicit watermarks with job number, IP, and time on the screen. Once the photos are leaked, you can accurately locate the responsible person, time and equipment by holding the photos. This strong traceability capability itself is a huge deterrent to employees’ intentions to leak secrets.

Question 4: Will using encryption software affect our use of version management tools such as Git and SVN?

A good encryption system will do "process whitelisting" and "smart channels". The Insight MIT system can automatically identify version control tools such as SVN and Git, and perform "automatic encryption and decryption" of files pulled and submitted from the code warehouse. The developer's operation process is exactly the same as before, and there will be no garbled code or damage to the version library.

Question 5: The company has a limited budget. Are these systems expensive?

Accounts must be calculated over the long term. A core code leak may wipe out several years of a company's R&D investment, or even bring down a project. This type of system is usually charged based on the number of terminal licenses. Products such as Insight Eye support modular purchase. For example, you can only encrypt the core R&D department and core servers at first, and then gradually expand them later, so the investment is completely controllable.

Source of this article: Enterprise Data Security Leakage Prevention Evaluation Research Institute

Leading expert: Zhao Zhenguo

Editor in charge: Sun Xiaolei

Last updated: March 24, 2026