Chevron Left
返回到 IT Security: Defense against the digital dark arts

學生對 Google 提供的 IT Security: Defense against the digital dark arts 的評價和反饋

18,397 個評分


This course covers a wide variety of IT security concepts, tools, and best practices. It introduces threats and attacks and the many ways they can show up. We’ll give you some background of encryption algorithms and how they’re used to safeguard data. Then, we’ll dive into the three As of information security: authentication, authorization, and accounting. We’ll also cover network security solutions, ranging from firewalls to Wifi encryption options. The course is rounded out by putting all these elements together into a multi-layered, in-depth security architecture, followed by recommendations on how to integrate a culture of security into your organization or team. At the end of this course, you’ll understand: ● how various encryption algorithms and techniques work as well as their benefits and limitations. ● various authentication systems and types. ● the difference between authentication and authorization. ● how to evaluate potential risks and recommend ways to reduce risk. ● best practices for securing a network. ● how to help others to grasp security concepts and protect themselves....




Great course for beginners and experts. Easy to understand and a good refresher for those who have been into IT for a long date. Recommend it to everyone looking for a high quality course on coursera.



Great course that is full of useful information and presented in an easy to understand way. It's an awesome beginner course that will add to your knowledge and further your knowledge of IT security.


76 - IT Security: Defense against the digital dark arts 的 100 個評論(共 3,016 個)

創建者 Sarah H


too much info (too much terms that is explained) but not enough practice.

創建者 Mikhail M


I enjoyed "The Bits and Bytes of Computer Networking" as much as I am disappointed in "IT Security" course.

1. The instructor usually does not bother to provide explanatory images or diagrams. He just talks and expects us to build the full image in the head. He uses many abbreviations, some of which were not introduced before. Hm, what do you have the video for? For instance, Kerberos protocol. The diagram (wow, they have one) includes "KDC". It is never explained what it is. The helpful diagram is hidden while the instructor talks about what happens in the protocol. C'mon, do you really think that your face is more important than the diagram in this case?

2. The information is very high-level and I just can't see how it might form a proper structure. "Digital signature is used to proof authenticity". Ok. I new that. If anyone does not know that, they can easily guess from its name. How exactly does it do this? How exactly is the private key applied to form a signature? The answer is actually simple: append a digest formed as a message hash encrypted with a private key. But this is not in the video.

3a. Some information is plain wrong! E.g. "But the output should be unique to the input, such that two different inputs should never yield the same output". This is theoretically not possible, since the size of a hash is fixed, while the size of a message is arbitrary.

3b. Another example: Diffie–Hellman. The instructor says "combine the numbers" and the image shows "+" sign. You might think this is addition. But it is not. It would make no sense to use addition here. The algorithm actually uses power by module operation, but it is omitted from the course.

創建者 Alex S


On the whole, great foundation. But the number of quizzes vastly outnumber the labs - decidedly not "hands on" - and the labs present held my hand the whole way. The technical detail is sparse and the quizzes were confusingly worded. I loved the certificate on the whole, but the last two courses were significantly less engaging than the ones before them.

創建者 Hans T


Missing transciprts, spelling mistakes in transcripts, lots of missing supplemental readings. What is the point of offering a course when no one checks the basics are right?

創建者 Anthony D


Lots of talking and almost no hands on that explains how to explement or how to actually use the knowledge and practices they talk about.

創建者 Naman K N


I was lost while studying this course many times. Often the critical concepts were just spoken, at least have a PPT of critical concepts



I have submitted my verification still lot of delay in my certificate , it's really very frustrating

創建者 Brian


Much too dense to absorb, and not necessary for an *entry-level* IT position.

創建者 Taylor G


lots of technical stuff really fast without lots of examples not my favorite.

創建者 David M


Honestly, I'm very confused how this course is so bad compared to the other courses in this certificate program. When I finished the other courses, I felt accomplished. I felt like I learned so much about something I knew nothing about. With this course, I feel like I just learned a bunch of vocabulary words. In no way did this show me how to implement any of these acronyms to make a company securer. I have no idea what to do to set up a sucure network, how to install firewalls, what a firewall even looks like. Unbelievable.

創建者 Sasha B


Courses developed for people who didn't see computers and Internets in their life even one time. Good for my grandmom.

創建者 Carmos1970


terrible support when u have problems using there software for labs! and by terrible i mean zero support!

創建者 Amit S


The lectures are all over the place. The content does not flow well and it super hard to follow along.

創建者 Jose L A D N


They charge me after i finish the espezialization

創建者 Ahmed S M


This is Ahmad Serag, an Egyptian student studying high school in Saudi Arabia.

My course for Google IT Support Professional Certificate from Coursera I've finished today after I stayed up nights and wrote and documented a lot of things and meanings to this wonderful course about the IT field from Googlers, It's been an incredible journey. These are all not easy concepts for a 17 years old guy with unlimited passions, but I made it through the whole thing.

So, I’m asking google today if you can encourage me via giving me a T-Shirt from google as a congratulations gift on finishing the Google IT Support Professional Certificate that will support me to apply for an internship at google in future and go forward for my goals. Hope Google team celebrate me :))

Warm regards,

Ahmed Serag

創建者 Ardee D


First, I would like to thank the organizers for this opportunity, for creating this program and making it possible to those who want to try some new possibilities within the IT world. I'm coming from a non-IT background and it was really good to have a good grasp of the fundamentals or should I say the basics to be an IT Support Specialist. There were things that I did in my computer without any knowledge prior to this course but now, I'm equipped with terminologies that sounded gibberish to me before but not anymore. After this course, I can confidently say that I learned a lot and I know I'll be able to use this new found knowledge. I must also point out that it also gives you a boost in self confidence knowing that anything is possible if you are determined. So, thank you.

創建者 Gijs O


Many thanks to the teachers, who explained key principles in a clear and accessible way. I appreciated their knowledge, experience, enthusiasm, and encouragement. Thanks to Coursera for providing this user-friendly learning platform. Via regular assessments, I could apply principles I had learned and consolidate my understanding. Help Center staff responded to queries promptly and were friendly and supportive. The knowledge I gained from these courses has boosted my confidence and will serve as a foundation for further reading and practice. I would not hesitate to recommend this certificate programme to anyone wanting to develop their IT and IT support knowledge.

創建者 Dana A F


I must be honest...module 3 was my preferred since it had some practical features, then I liked a lot the last module since contained information which I was really familiar and also other that I didn’t know at all. In module 1 I liked a lot the part with "building" a computer and all the useful information received in order to start better understanding all the IT stuff. I've struggle a lot in module 2, the info was so dense, a lot of terms were new for me and a bit difficult to understand but I managed to pass through them. Overall it was an interesting experience, I've learn a lot of things and hopefully I will have sun the chance to apply some of them.

創建者 Patrick L


I absolutely loved this course. It was a great ending to the IT Tech Support Certificate because we could understand a lot of the concepts used to breach networks. I loved this course in the way they illustrated what historical hacks have occurred due to oversights and unseen gaps. I've learned the bad guys are just as up on things as the good guys, sometimes even more so. What a challenging environment IT security is. This course only scratched the surface as I'm sure there is a lot more to know, but it definitely does all it can to prepare on the defenders side of things. I'd recommend this course. It's a great starter for an online six week course.

創建者 Kevin L


Wow! Here I am at the end of this certificate, but definitely not at the end of continuing to learn and keep my skills fresh. I never ever thought about quitting, but this hasn't be easy! But, things that are worth it rarely are easy.

This was a module I was able to really think about how my company handles things for security and privacy, especially with Covid as things have moved to a more remote focused level. I'll want dive into these topics further even though my role is focused on the front end. Thanks to everyone that put this course together, and I look forward to seeing what other certificates I can gain. Gotta keep going!

Thank you,


創建者 Francis L


A good course wrap up, I found the topics on this section very engaging as it is something we can all actively relate to (the safety of our devices). There was a lot of cool new concepts to learn and the pacing was very smooth in that I found myself clicking the next video so fast because I WANTED to know the next topic. The great thing about this course was it also included the interview strategies and helpful advice in the end so that it does not leave you hanging. Honestly my biggest fear was completing the whole program and not even know how to speak in an interview. Definitely would recommend the Google IT program to all!

創建者 Kerdia J


I'm thrilled to have just completed the last course in Google IT Professional Certifcate! I enjoyed this course and really appreciated the practicals. At times it got a bit technical and that's expected, this is IT! 😊 There are some things I need to brush up on, but overall this course is great, with customer service and interview training included, made it more all rounded. This has been a wonderful learning process, made me more confident that I am being productive with my time by learning new and valuable skills. Thank you so much Google and Cousera!



This course taught me the arts of cyber security, how to protect and protect my company from hacker attacks, what are the main types of attacks and how to defend, what are the main vulnerabilities and how to minimize them, methods and ways to ensure that information be transmitted in a safe, confidential and authentic way, I learned a lot from this course and the teacher is great, taught each step in detail and gave practical activities on how to put the course into practice. Thank you all.

創建者 Van L


I am very very happy that I found the Couresa online program, I think, this program is one of the very best program to study online, reasonable free, and very profesional platfrom easy to follow, plenty of topic to select.

I have been telling all of my friends and all the peoples that I know about how greatful of Couresa,

Thank you so much for create such a wonder program that you can help alot of people to gain more knowledge

that they can improve their jobs

Van Le,

創建者 Luis


I genuinely enjoyed this course, it was very informative and made me aware of small changes that I can make in my personal home network to be more secure. It also gave me a great overview of all the possible attack vectors, which might be a little overwhelming but great to know.

There aren't as many practice exercises as some of the other courses in the specialization but they have the information in this course has been amazing, especially for a beginner like myself.