What is a certificate authority?

Establishing a secure communication channel is important-​but how do you know you are communicating with the right entity? The structure of the internet makes it easy to launch so-called man in the middle attacks. This allows even secure communication channels to be established with the wrong site or computer. Alternatively, phishing attacks may try to confuse users by mimicking the look and feel of websites they are used to-​like their bank’s site. On the web this problem is solved using so-called certificate authorities. A small number of trusted entities provide a basis on which the legitimacy of other sites can be established.
Credits: Talking: Geoffrey Challen (Assistant Professor, Computer Science and Engineering, University at Buffalo). Producing: Greg Bunyea (Undergraduate, Computer Science and Engineering, University at Buffalo).
Part of the www.internet-c... online internet course. A blue Systems Research Group (blue.cse.buffa...) production.

[@8t8t82]

As a firewall technician this channel have helped me so much. Please keep up ⬆️ thank you a lot

[@ClownBass]

This was very, very well explained. Thank you for backing up the lecture with a real world example and illustrations!

[@anumsheraz]

I couldn't leave this video until watching fully. Your way of explaination is engaging!

[@ahandoko9091]

Thank you for the explanation with common language and not with IT language. This explanation make me well explained

[@utkarshagrawal6060]

hmm, very clearly to understand, and nice combo (First theory, and then practically)

[@abrazbashar]

Short and straightforward!

[@ericschneider2546]

Just a great explanation, thank you!

[@shanehaynes1012]

Love the demonstration that was given.

[@maximepivi]

Alice really look like bob...

[@roopeshr]

Beautiful explanation!

[@memo6032]

Can't anyone copy google digital signature and put it on their certificate

[@LastAttempt786]

Amazing explanation. I saw your video on digital certificates too. Very lucid :)

[@duongdtrai483]

best explaination

[@patrikmatula476]

whole video im fighting with intention, not to believe guy in leather jacket and snapback explaining whatever technical

[@rein29233]

Thank you!!!! Finally understood!!

[@jimmoriarty6964]

So, if I understand this correctly, certificate authorities are what protects us from MItM attacks?

[@eruptrl8893]

Great explanation

[@colinrickels201]

fantastic explanation

[@eduardoayora2327]

very important information. You were very clear, thanks

[@olisabosah4292]

Thank you

[@amlivinginhell]

very good explanation. thank you brother

[@nihalkashyap152]

Very nice elaboration 🙌

[@ms3ben]

Very helpful and easy to understand.

[@deb62615]

What about when you communicate between users over a channel like skype/whatsapp? How can you bind a certificate with a user. With a site you use a unique domain, but with a user on a phone communicating from skype? IP address maybe?

[@nonamespls3468]

The certificate authority, you mention about "it is being signed by an entity I trust", i don't even know that entity, how can you say it is trusted? sorry if it's a dumb question, just starting to learn coding.

[@onnisnare244]

Top notch content, thank you!

[@reza3275]

Eve usually gets in the middle not Charles.

[@jithinmv6516]

Haha😂😂

[@BloemkoolGaming]

No, its Trudy, Trudy always gets in the middle.

[@jithinmv6516]

Noo its eve... 👿👿

[@Bmg9bmg9]

Simple and clear. Thanks dude

[@sravani1441]

Thank you .it is so clear for me now

[@emmanuelmotsi]

You explain well, thank you'

[@yoosufahmadh3945]

Great explanation. Thanks

[@Connor-iu1xc]

Uhhh, I mean I guess thanks? I want to know what is a CA like who picks them? How does someone become one? Can a hacker become one or pretend to be one?

[@God0fTime]

I think icann has info on that

[@manawa3832]

Sigh ok but Charles can intercept the messages between (Bob, Alice) AND the CA. So right back at square one.

[@Lonewadi6242]

1) How can I check the validity of a security certificate on my Android device? 2) Can I safely delete an outdated security certificate on my device?

[@Rofflemywaffle]

Very helpful, thanks mate

[@jonathanduran2921]

How did charles get on the network path?

[@romeg4534]

Certificate of Live Birth too or Participation

[@zehuawang5765]

Amazing!!

[@maxgordon9022]

Thank you!

[@joeycottone7169]

What happens if you clear certificates on your phone?

[@janetalvarado6557]

Does this work the same as a certificate of clarification?

[@MrDavidKord]

I got confused when you said "click on this" at 4:18, and now I can't find the click. Help out?

[@JonKroeker]

He was referring to the link called "Details" that appeared in that drop down that was triggered by clicking the lock icon. But since the video is from was 3 years ago, the UI has changed :) Things have been moved around but are all there.

[@SaregamapavanN]

great thanks so much

[@dustinscharf3668]

legend!

[@ssanaini]

thanks man. i really appreciate it.

[@CyberTronics]

Why don’t you upload anymore

[@apaapa5113]

thank you it was great!!

[@RaviSharma-wo3zs]

Internet curriculum. Mobile glass

[@sharvanaudit9228]

champ

[@shakeelm5339]

Please do us a favor - you don't exactly understand the concept as how the Certificate Authority works! Please read and clear your concepts

[@manafro2714]

Perhaps you could help us all out by explaining it yourself, or maybe providing us with a link to an article or video which gives the "correct" explanation.

[@TheSageHarpuia]

share us the corrections by yourself to find out whats he is missing please :)

[@TomTom-jv5sv]

@@TheSageHarpuia what if there is a man in the middle while communication with CA? Then we are exactly on problem 1 again. So I'm also sure that it's not working like he explained it.

[@workstudy105]

Is no-one else bothered by the blinking cursor? 😂

[@themob8925]

this dude has issues saying "Certificate Authority" hahaha

[@torisway908]

Ed 😭😭

[@composedend]

reeeee school

[@urfan8358]

Binod