Many developers do not take security into account from the very beginning of their work especially during development, for example, design decisions or creating an application architecture, then how to correctly and timely use the protections offered by the .NET Framework?
Large specialists such as dataxdev – outsource dot net development are very careful about security. Therefore, you need to take an example and try to protect yourself as much as possible.
Potential threats concept
Building a secure architecture and design requires a deep understanding of the application environment. It will not be possible to build secure software if you do not know who has access to the application and where the vulnerabilities are for attacks. Thus, the most important factor in creating a secure software architecture and design is a good understanding of environmental factors such as users, entry points and potential threats with points of attack.
This is why threat modeling is becoming increasingly important in today’s software development process. Threat modeling is a structured way of analyzing an application’s environment in terms of potential threats, classifying threats, and deciding on mitigation techniques. With this approach, decisions regarding security technologies (such as authentication and SSL encryption) always have a valid basis – a potential threat.
However, threat modeling is important for another reason. As you probably know, not all potential threats can be mitigated by the use of security technologies such as authentication and authorization. In other words, some of them are technically impossible to resolve at all.
For example, an online banking solution might use SSL to secure website traffic. But how can users know that they are indeed using a bank page and not a hacker fake website? Ok, the only way to be sure of this is to verify the certificate used to set up the SSL channel. But users must be warned about this, and therefore you must inform them in some way. Therefore, threat mitigation techniques are not only defense technologies. It includes a requirement that all users know how to validate a certificate. (Of course, you cannot force them to do this, but if the system is designed appropriately, you can still encourage most of them to do so.) Threat modeling is an analysis technique that helps identify circumstances such as these, not just technical factors.
Secure coding rules
Of course, secure architecture and design alone cannot make an application completely secure. This is just one of the most important factors. After developing a secure architecture and design, you will also need to write secure code.
When coding web applications, always keep the following rules in mind:
Never trust user input
Assume every user is a malicious user until proven otherwise. Thus, always strictly validate user input. Design your validation code to check that only correct values are entered, not incorrect values (there are always more incorrect values than you might imagine during application development).
Never use string concatenation to form SQL statements
Always use parameterized statements so that your application is not vulnerable to SQL injection attacks as described in the SQL Injection article.
Never output user input to a web page before validating and encoding it
The user may enter some pieces of HTML code (for example, scripts) that trigger a cross-site scripting vulnerability (XSS). Therefore, always use HttpUtility.HtmlEncode () to disable special characters like
Never put important data in hidden fields of a web page
Hidden fields can be easily changed by simply viewing the source code of the web page, modifying and saving to a file. The attacker could then simply send a locally modified copy of the web page to the server. There are browser plug-ins that simplify this technique, making it as easy as sending email in Microsoft Outlook.
Never store important data in view state
View state is just another hidden field on a web page and can be easily decoded and viewed. Encrypting the view state helps protect information that is only valuable for a limited amount of time, but keep in mind that even encrypted data may one day be compromised if an attacker has enough time, resources, and motivation.
However, in order not to worry about security, you can simply trust the specialists https://www.dataxdev.com/blog/software-development-project-team-roles-and-responsibilities/.