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Peiran Liu commented on the post, Web Application Hacking, on the site 4 years, 10 months ago
Web applications have become such a target for hackers as more and more companies move their applications to web for convenience, so that the value of web applications becomes higher than before. In my opinion, injection flaws is the most important to securing web applications as injection is one of the most easy way for hackers to access your…[Read more]
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Peiran Liu commented on the post, Database Architecture and Development, on the site 4 years, 10 months ago
Storing in separate tables makes relationship between data more understandable. By using ERD we will have a clear view on how to build the database level by level. A logical mind is required in order to design an ERD. Relationship between multiple tables is needed when working with multiple tables.
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Peiran Liu commented on the post, Programming Languages (For 10/31), on the site 4 years, 10 months ago
C# is a general-purpose, multi-paradigm programming language encompassing strong typing, lexically scoped, imperative, declarative, functional, generic, object-oriented , and component-oriented programming disciplines.
I’ve learnt C before so I’ll compare C and C#.
C is a structured programming language while C# is a object-orientated…[Read more] -
Peiran Liu commented on the post, Forms Applications vs Web Applications, on the site 4 years, 10 months ago
Forms Apps are installed on the device and Web Apps are installed on the server. Forms Apps run faster while Web Apps run slower. But when there is a patch or update, Forms Apps need to be updated on every device while Web Apps only need to be updated on the server.
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Peiran Liu commented on the post, Securing a MySQL DB Server, on the site 4 years, 10 months ago
The reason why we discuss it so much is that it is very important as databases are one of the most valuable asset for the company. The two levels are client level and server level. For client level, we need good password policy and more authentication method. For server level, we need administrators to install updates and patches to make it secure.
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Peiran Liu commented on the post, GUI vs CLI, on the site 4 years, 10 months ago
I prefer CLI more. For GUI, after each update, the interface might change overtime and there are more useless information on screen for easier access. By using CLI, the same command can be used through multiple version unless they change the basis. The information returned from the console are also more direct. Understanding the command line is so…[Read more]
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Peiran Liu commented on the post, What is the point of a Domain?, on the site 4 years, 10 months ago
The domains are important as it can help us to administrate all of the computer under it. It is ok for me to not be on a domain at home as there are not that many devices so that I can configure them all by myself. Also, all of those devices are in my possession and within reach. But for a larger group like companies, it is easier to administrate…[Read more]
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Peiran Liu commented on the post, Importance of Understanding Storage Components, on the site 4 years, 10 months ago
The importance of understanding storage is that if my scope of audit contains a defect storage component, I will know if the data can be recovered and the performance of the remaining hard drives. With the variety of storage components that exist in an organization, the data will be saver than before while there will be more element that is needed…[Read more]
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Peiran Liu commented on the post, IP Addresses and Networks, on the site 4 years, 10 months ago
I thought I understand IP addresses before that night but I think I understand more now as I didn’t fully understand NAT type before and why it will impact my gaming experience in different ways. The identity can also tell what device we are using. Building a network from scratch helps me understand how it works and by knowing better about the…[Read more]
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Peiran Liu commented on the post, Why all the Operating Systems?, on the site 4 years, 10 months ago
It’s necessary to install multiple virtual machine with different operating system using different types of hosting technology as web is always available. Applications like VMware also have advantages like easier to access and run more stable. The installation on device also help us to understand the whole procedure of a system installation rather…[Read more]
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Peiran Liu commented on the post, PC Parts and IT Auditing, on the site 4 years, 10 months ago
The point of building a PC from scratch is to help us understand how PC works so that if there is a problem somewhere, we will know how to troubleshoot. With this knowledge, we can figure out the problem when the problem is related to hardware it self but not the software.
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Peiran Liu commented on the post, What do IT Auditors do?, on the site 5 years, 1 month ago
In my opinion. IT Auditors are the one who set rules or check periodically for the IT System, whether they are internal auditors or external auditors. They are necessary because in most companies, people aim for profit first. They might not pay enough attention for the IT Security risks which may cost them more. IT Auditors are the guy who prevent…[Read more]