First, security vulnerabilities.
Buffer overflow occurs when a program tries to read or write an out-of-range buffer. It may cause data in existing code to be overwritten or appended.
And the resulting stack buffer overflow attack. Buffer overflow allows attackers to execute code, change program flow, read sensitive data or crash the system. Vulnerabilities involving buffer overflow usually occur in architecture and design, implementation or operation stages.
Second, the transport layer protection is insufficient.
Transport layer refers to the process of data transmission from client to server. In the case of insufficient security at the transport layer, hackers can access data through web crawlers and modify or steal data according to their own wishes. The general solution is to use SSL and TLS to encrypt communication. But the problem is that not all SSL is the same.
Many of them are issued or signed by third-party analysis companies. Therefore, in addition to two kinds of communication encryption, we should also use the industry standard password suite with appropriate key length when developing software, and add the communication certificate detection module to the software. If an invalid certificate is detected, the user should be reminded immediately.
Third, code protection.
Use DSA data security isolation system to protect software development code and prevent source code from leaking and expanding. In the development environment, a secure area/encrypted subnet exclusive to the development department is formed.
In the encrypted subnet, the storage, circulation and use of data such as codes are not restricted, and code data cannot be leaked out through channels such as disks, networks and port peripherals. You can use the external network through the virtual desktop to realize the one-way circulation of network data (only in and out).
Fourth, unsafe data storage.
A common practice for developers is to rely on client-side data storage. However, client storage is not a sandbox environment, and security vulnerabilities are inevitable. Hackers are likely to access the database through such questions, thus manipulating and changing the information in the database.
The best way to ensure cross-platform data storage is to use the basic encryption provided by the operating system and then build an additional encryption layer. This can greatly improve the security of software and reduce the dependence on default encryption.