Sie müssen Software entwickeln, die sicher ist. Wie fangen Sie an?

Try to classify the design into user space, system space, and kernel space during the development of software design. Identify the key areas (vulnerable) in the design w.r.t to spaces, and divide key areas into two levels. The first level is to identify potential vulnerability within the space (US, KS, SS), and the second level is among the space (interaction b/w different spaces) This process will make a threat model matrix and then start deriving potential surface attacks for each case. Mark all those elements of the matrix that look to be a tentative attack in context with design, this evolve side channel attack test cases. Start coding, follow secure coding, perform threat analysis, and on completion execute your threat modeling matrix.

To design secure software, start with a threat modeling process to identify potential security risks. Incorporate security into the software development life cycle from the beginning. Adopt a principle of least privilege for system access. Use secure coding practices, regularly updating to address known vulnerabilities. Implement strong authentication and encryption methods. Ensure data validation to prevent injections and other attacks. Include security testing as part of your QA process, using both static and dynamic analysis tools. Plan for regular security audits and updates post-deployment. Educating your team on security best practices is also crucial for maintaining software security over time.

Designing secure software is hard. Often times the hardest part is to introduce security at a later stage which is often, because introducing security earlier on is viewed as a slow-down by most teams. This leads to insecure and hard to secure products. There are lots of good techniques of designing secure software like Zero-Trust, principle of least privilege etc, but one way that I have used in the past is to create a Threat model and be truthful about all attack vectors and list them down. Every secure system has some flaws, know them and isolate them. Moreover, security is a continuous investment. You have to constantly re-evaluate your thread model and the known vectors. Validating assumptions is also important - pen tests etc help!

To design secure software, I start by conducting a thorough risk assessment to identify potential vulnerabilities and threats. This involves analyzing the application's architecture, data flow, and dependencies. Next, I implement security best practices such as input validation, parameterized queries, and encryption techniques to mitigate known risks. Additionally, I prioritize security features such as access control, authentication, and logging mechanisms to detect and prevent unauthorized access or malicious activities. Regular security audits and testing, including penetration testing, are crucial to ensure ongoing protection against evolving threats.

Well I would start with the requirements first. Why does this software have to be secure. What has to be achieved. Who is using the software and how is it used. Only then I would start with the threats. Without with this understanding it will be hard to see those in context.

Secure software systems need to be designed using the principles used in industry and also make a separate unique secure design element that will be helpful against intruders. That specific element may be a encrypted key or something else other than the access token, etc.

The "secure" for me is actually just a term. There are no such applications that can say they design "securely". They could due to many reasons like libraries, os , language so on. People in the community will still finds exploit or vulnerabilities. The way that can keep your applications safe is make sure to patch all the updates and make sure all bugs resolve immediately.

I don't agree with the previous comment. Even if using out of the box security solutions, you should still design with security in mind, and continually monitor as mentioned in the final part of the article, as new security issues can arise and be a problem even when using a third party's solution.

In the context of designing and implementing a solution for GDPR compliance requirements, I had an opportunity to evaluate and choose an Enterprise Key management solution (KMS). Such technologies at Enterprise scale can easily cost upwards of $ million, and so it is imperative to clearly lay out the problem domains to be addressed, such as Secrets management, Data encryption and decryption, Key management and Certificate management. Accordingly shortlist Tech vendors based on coverage of their offerings to your problem domain, followed by a deep dive into their architecture, capabilities, efforts required analysis into rollout/deployment and adoption across the Enterprise applications landscape and cost/licensing and support models.

Authorization and authentication are the initial steps in developing a secure software platform. Use credentials to identify individuals if you want only certain users to have access to the application. For instance, you have an employee directory application that uses email addresses to categorize different employees. In such a scenario, before storing the emails in the database, you must encrypt them.

Updating your code regularly to keep up with emerging threats is key. Code that is secure and functional now will be a sitting duck in a couple of years. Operational threat modeling on a regular basis will also help identify what to update. This will also identify gaps between Threat Modeling done at the Design phase and post-implementation phase.

It's easy to think it's just software that must be secure. I'd start back with making sure the organization understands the nature and importance of security so that it's prepared to adapt as needed in terms of processes, planning, infrastructure, budget, and even culture. Clean, protected transport and storage of data, sure, but also a culture that rewards people calling out their own errors or worries without fear of rebuke. Some goals are in tension with one another, so trade-offs must be made. Centralization and efficiency, common goals, can invite security risks. Open source has benefits, but challenges, too. Software should avoid problems, but processes must be in place for when that fails. It's a whole-organization effort.

Security isn’t really a design problem; it’s a utility service to the rest of the system. It shouldn’t impact the design; instead, it should be an available service to all the system components.

First, identify potential threats. Second, understand that you can’t identify all possible threats and design the system accordingly. In particular (but not only), use out of the box trusted solutions, and also don’t trust anything that arrives to your server from a client. Good luck!

To create secure software, you should start by identifying potential risks and vulnerabilities. Think about how users might misuse the software or how external attackers could exploit weaknesses. Then, set up strong authentication measures to ensure only authorized users can access the system. Regularly update your software and its dependencies to patch any known security issues. Encrypt sensitive data to protect it from unauthorized access, and use secure coding practices to prevent common vulnerabilities. Conduct thorough testing, including security testing, to identify and fix potential problems before releasing the software.

Security measures are essential to safeguard sensitive data, protect against cyber threats, and maintain user trust. However, these security measures can sometimes introduce complexities that hinder usability. As a software designer, we need to find the sweet spot.