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

[@shanehaynes1012]

Love the demonstration that was given.

[@ericschneider2546]

Just a great explanation, thank you!

[@utkarshagrawal6060]

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

[@abrazbashar]

Short and straightforward!

[@roopeshr]

Beautiful explanation!

[@duongdtrai483]

best explaination

[@olisabosah4292]

Thank you

[@eruptrl8893]

Great explanation

[@rein29233]

Thank you!!!! Finally understood!!

[@maximepivi]

Alice really look like bob...

[@colinrickels201]

fantastic explanation

[@manawa3832]

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

[@LastAttempt786]

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

[@memo6032]

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

[@jimmoriarty6964]

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

[@eduardoayora2327]

very important information. You were very clear, thanks

[@nihalkashyap152]

Very nice elaboration 🙌

[@amlivinginhell]

very good explanation. thank you brother

[@onnisnare244]

Top notch content, thank you!

[@emmanuelmotsi]

You explain well, thank you'

[@yoosufahmadh3945]

Great explanation. Thanks

[@ms3ben]

Very helpful and easy to understand.

[@Bmg9bmg9]

Simple and clear. Thanks dude

[@sravani1441]

Thank you .it is so clear for me now

[@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.

[@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?

[@jonathanduran2921]

How did charles get on the network path?

[@zehuawang5765]

Amazing!!

[@maxgordon9022]

Thank you!

[@Rofflemywaffle]

Very helpful, thanks mate

[@romeg4534]

Certificate of Live Birth too or Participation

[@patrikmatula476]

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

[@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... 👿👿

[@SaregamapavanN]

great thanks so much

[@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?

[@ssanaini]

thanks man. i really appreciate it.

[@CyberTronics]

Why don’t you upload anymore

[@janetalvarado6557]

Does this work the same as a certificate of clarification?

[@joeycottone7169]

What happens if you clear certificates on your phone?

[@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

[@dustinscharf3668]

legend!

[@apaapa5113]

thank you it was great!!

[@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.

[@RaviSharma-wo3zs]

Internet curriculum. Mobile glass

[@sharvanaudit9228]

champ

[@workstudy105]

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

[@composedend]

reeeee school

[@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.

[@themob8925]

this dude has issues saying "Certificate Authority" hahaha

[@torisway908]

Ed 😭😭

[@urfan8358]

Binod