Steam Data Breach Alleged

A post on X by MellowOnline1 from Sunday reports that user details for approximately 89 million Steam accounts are being offered for sale on the Dark Web following an alleged data breach (thanks XDA). A second post follows up with indications that the unconfirmed leak was through a third-party vendor, rather than Steam itself. As said, this is unconfirmed, but the included suggestion that users change their passwords seems like an easy way to be prudent as this gets sorted. Here's a bit from Sunday's post:

Yesterday, an alleged major @Steam data breach occurred, compromising over 89 million user records (roughly two-thirds of all Steam accounts).

These datasets are being sold for over $5,000 on what appears to be a site akin to Mipped.
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23.
 
Re: Steam Data Breach Alleged
May 15, 2025, 10:14
23.
Re: Steam Data Breach Alleged May 15, 2025, 10:14
May 15, 2025, 10:14
 
Pr()ZaC wrote on May 14, 2025, 16:11:
Probably the same source

Aged like milk
22.
 
Re: Steam Data Breach Alleged
May 14, 2025, 20:38
Prez
 
22.
Re: Steam Data Breach Alleged May 14, 2025, 20:38
May 14, 2025, 20:38
 Prez
 
Laughing, I was curious as to why you're always so angry so I took a cursory glance at your post history. That's quite the list of accumulated "REMOVED" posts considering your low post count. I didn't really learn anything but it was entertaining nonetheless.
"The assumption that animals are without rights, and the illusion that our treatment of them has no moral significance, is a positively outrageous example of Western crudity and barbarity. Universal compassion is the only guarantee of morality."
Avatar 17185
21.
 
Re: Steam Data Breach Alleged
May 14, 2025, 19:32
21.
Re: Steam Data Breach Alleged May 14, 2025, 19:32
May 14, 2025, 19:32
 
Laughing Man wrote on May 14, 2025, 16:45:
you lazy fucks

Yep.

And pretty damned proud of it, too!
-=Threadcrappeur Extraordinaire=-
20.
 
Re: Steam Data Breach Alleged
May 14, 2025, 18:55
20.
Re: Steam Data Breach Alleged May 14, 2025, 18:55
May 14, 2025, 18:55
 
Prez wrote on May 14, 2025, 17:39:
Overon wrote on May 14, 2025, 17:09:
Prez wrote on May 14, 2025, 13:38:
Haha why do I see my entire Steam library of games disappearing in the future? I would imagine that I am pretty high on the list of targets given that my library is over 14000 games and DLC. I have 2FA on but it seems that hackers can get into anything if they want to badly enough.
Can you even play that many games?

Well, now that I am disabled, I am knocking them out at quite a clip. My math shows that as long as I live to be 265 years old I can finish them all.
You will be buying more and the pile of shame will grow.
19.
 
Re: Steam Data Breach Alleged
May 14, 2025, 18:44
19.
Re: Steam Data Breach Alleged May 14, 2025, 18:44
May 14, 2025, 18:44
 
Prez wrote on May 14, 2025, 17:39:
Overon wrote on May 14, 2025, 17:09:
Prez wrote on May 14, 2025, 13:38:
Haha why do I see my entire Steam library of games disappearing in the future? I would imagine that I am pretty high on the list of targets given that my library is over 14000 games and DLC. I have 2FA on but it seems that hackers can get into anything if they want to badly enough.
Can you even play that many games?

Well, now that I am disabled, I am knocking them out at quite a clip. My math shows that as long as I live to be 265 years old I can finish them all.

I'll be there waiting to take them off your hands when you are on your deathbed! Wings
18.
 
Re: Steam Data Breach Alleged
May 14, 2025, 17:44
18.
Re: Steam Data Breach Alleged May 14, 2025, 17:44
May 14, 2025, 17:44
 
Overon wrote on May 14, 2025, 17:09:
Prez wrote on May 14, 2025, 13:38:
I would imagine that I am pretty high on the list of targets given that my library is over 14000 games and DLC.
Can you even play that many games?

Prez is playing the secret game-within-a-game called Backlog Padding. He’s definitely playing to win.
"Absent that caring, we get “the AI does not love you, nor does it hate you, and you are made of atoms it can use for something else.”" ~ Eliezer Yudkowsky
17.
 
Re: Steam Data Breach Alleged
May 14, 2025, 17:39
Prez
 
17.
Re: Steam Data Breach Alleged May 14, 2025, 17:39
May 14, 2025, 17:39
 Prez
 
Overon wrote on May 14, 2025, 17:09:
Prez wrote on May 14, 2025, 13:38:
Haha why do I see my entire Steam library of games disappearing in the future? I would imagine that I am pretty high on the list of targets given that my library is over 14000 games and DLC. I have 2FA on but it seems that hackers can get into anything if they want to badly enough.
Can you even play that many games?

Well, now that I am disabled, I am knocking them out at quite a clip. My math shows that as long as I live to be 265 years old I can finish them all.
"The assumption that animals are without rights, and the illusion that our treatment of them has no moral significance, is a positively outrageous example of Western crudity and barbarity. Universal compassion is the only guarantee of morality."
Avatar 17185
16.
 
Re: Steam Data Breach Alleged
May 14, 2025, 17:29
JTW
16.
Re: Steam Data Breach Alleged May 14, 2025, 17:29
May 14, 2025, 17:29
JTW
 
Regardless, it's a good reminder to change passwords. I had a strong one, but it was a strong one from the days before password managers made truly strong passwords possible.
15.
 
Re: Steam Data Breach Alleged
May 14, 2025, 17:25
NKD
15.
Re: Steam Data Breach Alleged May 14, 2025, 17:25
May 14, 2025, 17:25
NKD
 
Prez wrote on May 14, 2025, 13:38:
Haha why do I see my entire Steam library of games disappearing in the future? I would imagine that I am pretty high on the list of targets given that my library is over 14000 games and DLC. I have 2FA on but it seems that hackers can get into anything if they want to badly enough.

It doesn't sound like they actually have any data about what's on your account, or even passwords. In fact it sounds like it's just a third party they use for SMS 2FA verification that got hacked, so they'd need to further phish or hijack your shit somehow using this information to get anything.
Do you have a single fact to back that up?
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14.
 
Re: Steam Data Breach Alleged
May 14, 2025, 17:09
14.
Re: Steam Data Breach Alleged May 14, 2025, 17:09
May 14, 2025, 17:09
 
Prez wrote on May 14, 2025, 13:38:
Haha why do I see my entire Steam library of games disappearing in the future? I would imagine that I am pretty high on the list of targets given that my library is over 14000 games and DLC. I have 2FA on but it seems that hackers can get into anything if they want to badly enough.
Can you even play that many games?
13.
 
Re: Steam Data Breach Alleged
May 14, 2025, 17:02
13.
Re: Steam Data Breach Alleged May 14, 2025, 17:02
May 14, 2025, 17:02
 
Prez wrote on May 14, 2025, 13:38:
Haha why do I see my entire Steam library of games disappearing in the future? I would imagine that I am pretty high on the list of targets given that my library is over 14000 games and DLC. I have 2FA on but it seems that hackers can get into anything if they want to badly enough.

BRB, buying Prez's account info off of the dark web.
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12.
 
removed
May 14, 2025, 16:54
12.
removed May 14, 2025, 16:54
May 14, 2025, 16:54
 
* REMOVED *

This comment was deleted on May 14, 2025, 21:06. Reason: Cleanup. Sorry Golwar.
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11.
 
removed
May 14, 2025, 16:45
11.
removed May 14, 2025, 16:45
May 14, 2025, 16:45
 
* REMOVED *

This comment was deleted on May 14, 2025, 21:04. Reason: Personal attacks (rule 1)
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10.
 
Re: Steam Data Breach Alleged
May 14, 2025, 16:11
10.
Re: Steam Data Breach Alleged May 14, 2025, 16:11
May 14, 2025, 16:11
 
Overon wrote on May 14, 2025, 15:13:
Donkey_Punch wrote on May 14, 2025, 14:58:
This has already been debunked. Your passwords are safe. This third party vendor denies a data loss and they aren't even used by steam in the first place.

Pathetic journalism by the original reporting.
What is your source?
Probably the same source
9.
 
Re: Steam Data Breach Alleged
May 14, 2025, 15:13
9.
Re: Steam Data Breach Alleged May 14, 2025, 15:13
May 14, 2025, 15:13
 
Donkey_Punch wrote on May 14, 2025, 14:58:
This has already been debunked. Your passwords are safe. This third party vendor denies a data loss and they aren't even used by steam in the first place.

Pathetic journalism by the original reporting.
What is your source?
8.
 
Re: Steam Data Breach Alleged
May 14, 2025, 14:58
8.
Re: Steam Data Breach Alleged May 14, 2025, 14:58
May 14, 2025, 14:58
 
This has already been debunked. Your passwords are safe. This third party vendor denies a data loss and they aren't even used by steam in the first place.

Pathetic journalism by the original reporting.
7.
 
Re: Steam Data Breach Alleged
May 14, 2025, 14:30
Jim
7.
Re: Steam Data Breach Alleged May 14, 2025, 14:30
May 14, 2025, 14:30
Jim
 
That information sounds worthless. The 2FA codes are instanced per login attempt and are not reusable.
6.
 
Re: Steam Data Breach Alleged
May 14, 2025, 14:14
6.
Re: Steam Data Breach Alleged May 14, 2025, 14:14
May 14, 2025, 14:14
 
Leaked info includes:

Message contents (e.g., the 2FA codes)

Delivery status (e.g., sent, delivered, failed)

Metadata (timestamps, recipient numbers, etc.)

Routing costs (how much it costs to send each message)

So that's what, phone numbers and perhaps associated usernames (if they were included in the messages)? No wonder they're asking only $5,000 for up to 89 million records...
5.
 
Re: Steam Data Breach Alleged
May 14, 2025, 14:11
5.
Re: Steam Data Breach Alleged May 14, 2025, 14:11
May 14, 2025, 14:11
 
If you previously installed Steam on a mobile device, it's likely it sent 2FA code via SMS to that device (potentially via Twilio).
I've also moved the Steam Guard authenticator between devices, and that sends an SMS text (potentially via Twilio).
4.
 
Re: Steam Data Breach Alleged
May 14, 2025, 13:59
4.
Re: Steam Data Breach Alleged May 14, 2025, 13:59
May 14, 2025, 13:59
 
So the people wanting to get extra security are the ones that got hacked?
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