Datasets:
pre-view
/
CS50-raw

Dataset card Data Studio Files
xet
 Community
1
text
stringlengths
1
81
start
float64
0
10.1k
duration
float64
0
24.9
known as credential stuffing.
2,726.14
1.83
And we've come across reference to this already in this discussion thus far.
2,727.97
4.86
Credential stuffing-- a credential is something like a username
2,732.83
2.88
and password-- refers to the process of an adversary
2,735.71
3.78
having found a whole bunch of usernames and passwords, maybe online,
2,739.49
3.72
maybe in some database that they or someone else
2,743.21
2.37
attacked and posted for the whole world to download.
2,745.58
2.94
Credential stuffing means not using dictionaries, not using brute force,
2,748.52
4.86
but just literally using a list of already known usernames and passwords,
2,753.38
4.57
maybe from some other application or website,
2,757.95
2.48
to try to stuff them into a different website
2,760.43
3.06
to see if, well, maybe if David's using this username and password over here,
2,763.49
3.93
with high probability, he's probably using the same username
2,767.42
3
and password over here.
2,770.42
1.33
So credential stuffing is the threat that, I daresay, many of you
2,771.75
3.65
are vulnerable to.
2,775.4
1.2
Now, you don't need to raise your hands and admit to this right now.
2,776.6
3.07
But if you are using the same username and the same password
2,779.67
4.07
on 2 websites, 3 websites, 30 websites, all
2,783.74
4.65
websites you are today vulnerable to this attack.
2,788.39
3.24
To be clear, if any one of those websites or apps
2,791.63
3.27
is compromised by some adversary and they figure out all of the usernames
2,794.9
4.32
and passwords on that system, what a smart adversary is going to do now
2,799.22
3.3
is to try that same username and password,
2,802.52
2.32
they found for you on Amazon, on Gmail, on any other website or app
2,804.84
5.06
that you with high probability might be using just because those services are
2,809.9
3.63
popular.
2,813.53
0.69
So what's the takeaway?
2,814.22
1.56
Ideally, if you want to be immune to this kind of credential stuffing
2,815.78
4.323
attack, where someone takes your credentials over here and tries
2,820.103
2.667
to stuff them into these other services over here,
2,822.77
2.61
you have to use different credentials on each and every website,
2,825.38
4.38
on each and every app.
2,829.76
1.14
You cannot, should not be reusing the same password on multiple websites
2,830.9
5.82
or apps.
2,836.72
0.6
Username?
2,837.32
0.72
Yes, especially if it's your email address.
2,838.04
2.26
But passwords, no.
2,840.3
1.34
Now, this is admittedly easier said than done.
2,841.64
1.99
So we'll see soon how we can try to achieve this, avoiding credential
2,843.63
4.16
stuffing by having unique passwords, by at least having some help
2,847.79
3.03
when it comes to managing the same.
2,850.82
1.92
But there's another attack too that's come up indirectly here
2,852.74
2.88
already known as social engineering.
2,855.62
2.8
Social engineering isn't a technical attack per se, but rather
2,858.42
4.46
a social one, an attack among humans.
2,862.88
2.7
For instance, let me go ahead and suggest the following.
2,865.58
2.35
If you have a piece of paper near you and a pen or pencil,
2,867.93
3.89
go ahead and write down, if you could, on that piece
2,871.82
2.82
of paper one of your passwords.
2,874.64
2.52
Any of them is fine.
2,877.16
2.05
Just go ahead on this piece of paper in front of you
2,879.21
3.44
and write down one of your passwords, including
2,882.65
3.84
any letters or digits or punctuation.
2,886.49
5.32
Now, I'm seeing in the chat some resistance.
2,891.81
3.06
I'm seeing some heads down though and some scribbling,
2,894.87
2.55
which is exactly the point.
2,897.42
1.47
Why would you take my suggestion and write down your password
2,898.89
3.69
on a piece of paper, even though I'm presumably
2,902.58
3
someone you should trust in a cybersecurity class?
2,905.58
2.79
Those of you who reached for a pen or pencil, just
2,908.37
2.64
wrote down one of your passwords on a sheet
2,911.01
2.19
of paper were just socially engineered because a circumstance was created
2,913.2
4.65
where you believed or trusted the person that was asking or telling
2,917.85
3.69
you to do something, and you took at face value
2,921.54
2.37
that you should do that thing.
2,923.91
1.74
Moving forward, if any teacher ever asks you to write down
2,925.65
3.87
a password on a piece of paper, one takeaway for today is just don't do it.
2,929.52
5.01
That would be social engineering.
2,934.53
1.77
And in general, if someone calls you on the phone, sends you an email
2,936.3
4.05
and tries to get information from you, even if it seems and sounds legitimate,
2,940.35
5.25
moving forward after today, especially, should always
2,945.6
2.76
have a healthy skepticism, if not just enough paranoia
2,948.36
4.15
to be healthy in the interests of protecting your account.
2,952.51
3.24
Moving forward, if you had someone ask you
2,955.75
2.22
something like that or even a little more nefarious,
2,957.97
2.19
trying to figure out what your first pet was
2,960.16
3.09
or something should kind of perk your ears up.
2,963.25
3.63
Your Spidey senses should go up, so to speak, in the context of Spider-Man.
2,966.88
3.42
And you should wonder, wait a minute, why do they need that information?
2,970.3
4.17
Let me see how this plays out before I share anything about myself.
2,974.47
4.26
And indeed, if you were, bless your hearts.
2,978.73
2.65
But if you did jot down your password with a pen or pencil,
2,981.38
3.42
remember that feeling of being duped because you do not
2,984.8
3.05
want that to happen when it actually matters.
2,987.85
2.25
Now, after this, now, I know you'll believe nothing I say.
2,990.1
2.79
But go shred or tear up or flush whatever piece of paper
2,992.89
3.6
has that password on it.
2,996.49
1.24
The point is not to share it with anyone,
2,997.73
1.73
just to prove that particular point.
2,999.46
2.41
Now, beyond social engineering, there's another threat
3,001.87
3.65
that's a variant of that, but is more technical in nature.
3,005.52
2.905
And that is phishing.
3,008.425
0.875
And most of you probably have heard about phishing in this context.
3,009.3
3.6
And you can think about it sort of physically like going fishing,
3,012.9
3
but trying to hook a sucker, someone like me or you who is duped
3,015.9
3.93
into providing information that they shouldn't.
3,019.83
2.64
And this very often happens via emails.
3,022.47
2.13
Odds are, if you go through your spam folder sometime,
3,024.6
2.37
you will see emails that seem to be coming from paypal.com
3,026.97
4.29