Mitja Kolsek

Mitja Kolsek

@mkolsek.bsky.social

CEO of ACROS Security; Co-founder of 0patch (https://0patch.com) Wishing billionaires would stop buying social platforms and making us rebuild synapses elsewhere https://acrossecurity.com

228 Followers 100 Following 42 Posts Joined Aug 2023
2 months ago

All that the Turing Test proves is that human are much, much stupider than Alan Turing ever suspected.

486 78 12 5
2 months ago

Oh, clever, thanks!

1 0 0 0
2 months ago

Of course having the server auto-sign a customized installer would be a seriously risky thing to do (exposing the signing key) and today with the requirement for the key to be on a secure hardware device may also be impossible to implement. So are customized installers even possible anymore?

0 0 1 0
2 months ago

Thanks, Eric, for explaining why this is a bad idea. When one wants to provide users with a signed installer, but also make it super easy for said installer to be able to auto-register the product to user's account, adding user-specific data as padding sounds like almost the only reasonable option.

0 0 1 0
2 months ago
Post image

Adobe tries to cheat Authenticode, which can result in additional blocks and security warnings.

textslashplain.com/2024/11/15/b...

6 1 2 0
4 months ago
Preview
Tap-and-Steal: The Rise of NFC Relay Malware on Mobile Devices NFC relay malware on Android devices is exploiting Tap-to-Pay systems, targeting financial institutions globally with sophisticated attacks and minimal user interaction.

Zimperium has discovered more than 760 Android apps that steal and relay NFC data to a remote attacker

zimperium.com/blog/tap-and...

10 5 0 1
4 months ago
Preview
Introducing Aardvark: OpenAI’s agentic security researcher Now in private beta: an AI agent that thinks like a security researcher and scales to meet the demands of modern software.

Aardvark is a labor of love and mission for the whole team. We are super excited to bring it to you. Sign up for the beta immediately!!! openai.com/index/introd...

7 4 1 1
4 months ago
Post image

The latest WindowsUpdate disables Windows Explorer previews for files that were downloaded from the Internet or are on Internet Zone network shares.

gist.github.com/ericlaw1979/...

2 1 0 0
5 months ago
YouTube
For our scientists YouTube video by Elle Cordova

Need a summary of all the ways the White House has gutted science?

🧪Or are you scientist who needs to hear your work valorized in song?

From brilliant songwriter, Elle Cordova:

“If they don’t like the data in your graphs/they’ll just turn the lights out in your lab”

youtube.com/shorts/AYm9w...

42 16 1 0
5 months ago
Search Jobs | Microsoft Careers

Come work with me on Microsoft Defender for Endpoint!
jobs.careers.microsoft.com/global/en/jo...

4 2 0 0
5 months ago
One Token to rule them all - obtaining Global Admin in every Entra ID tenant via Actor tokens While preparing for my Black Hat and DEF CON talks in July of this year, I found the most impactful Entra ID vulnerability that I will probably ever find. One that could have allowed me to compromise ...

I've been researching the Microsoft cloud for almost 7 years now. A few months ago that research resulted in the most impactful vulnerability I will probably ever find: a token validation flaw allowing me to get Global Admin in any Entra ID tenant. Blog: dirkjanm.io/obtaining-gl...

87 37 9 5
6 months ago
Unicode 16.0.0

If you want to understand the struggle anyone doing input validation has, just look at ver 16.0 of the unicode standard: unicode.org/versions/Uni...

Unicode 16.0 adds 5185 characters, for a total of 154,998 characters

244 pages.

yeah, good luck with that.

<script>alert('𐒀𐒁𐒂')</script>

6 4 0 0
6 months ago
Preview
The Alot is Better Than You at Everything As a grammatically conscientious person who frequents internet forums and YouTube, I have found it necessary to develop a few coping mechani...

The Alot is better than you...

hyperbole-andahalf.blogspot.com/2016/08/the-...

1 1 1 0
7 months ago
Preview
So Long to Tech’s Dream Job

Five-ish years ago, @lizthegrey.com told me tech workers needed to organize because the tech giants would automate their jobs, the market would flood with talent and they would lose bargaining power. I thought it was unlikely. Here’s a story about me being wrong. www.nytimes.com/2025/08/04/t...

299 82 5 5
8 months ago
Video thumbnail

Morning in Kyiv. No sleep. Air quality is extremely bad. City is covered in thick smoke.

This is Russian terror, aimed at people who chose to stay, resist and fight.

1,808 828 93 59
8 months ago
Post image

Re-reading Stumbling on happiness by @danielgilbert.bsky.social and loving every page again. Relatable facts, interesting actual and thought experiments wrapped in just my type of humor.

2 0 0 0
8 months ago

OAuth is hard and we often find security flaws, but this is next level. Kudos to Modzero.

3 1 0 0
8 months ago

A friendly reminder from the Patron Saint of the Internet, Deth Veggie

14 5 1 0
8 months ago

So sorry to hear this. Chipped in and sharing.

1 0 0 0
8 months ago

Hey, we can sell you a USB-HDMI adapter that works well in your office but flickers on stage.

1 0 0 0
9 months ago
Preview
Roundcube ≤ 1.6.10 Post-Auth RCE via PHP Object Deserialization [CVE-2025-49113] A deep technical breakdown of CVE-2025-49113, a critical Roundcube vulnerability involving PHP session serialization. Learn how the bug was discovered, exploited, and responsibly disclosed with full P...

Threat actors are exploiting a recently patched vulnerability in the Roundcube webmail server.

Attacks began two days after a patch was published on GitHub.

FearsOff believes attackers bin-diffed the code before a final patch was ready and started exploiting servers.

fearsoff.org/research/rou...

7 2 1 1
9 months ago
Preview
Hacking My Car, and probably yours— Security Flaws in Volkswagen’s App This flaw made me the owner of thousands of cars (sort of).

Volkswagen fixed vulnerabilities in its mobile app that could allow attackers to hijack user accounts and retrieve car/owner details.

The app lacked brute-force protection, stored internal credentials in plaintext, and exposed any car owner's details via a VIN.

loopsec.medium.com/hacking-my-c...

32 11 1 4
10 months ago

You receive a call on your phone.

The caller says they're from your bank and they're calling about a suspected fraudulent payment.

"Oh yeah," you think. Obvious scam, right?

The caller says "I'll send you an in-app notification to prove I'm calling from your bank."

🧵 1/4

1,643 1,010 18 265
10 months ago

Makes sense, thanks.

1 0 0 0
10 months ago

Perhaps to prevent someone from pasting your potentially sensitive clipboard content to the username field?

0 0 1 0
10 months ago
Preview
Windows RDP lets you log in using revoked passwords. Microsoft is OK with that. Researchers say the behavior amounts to a persistent backdoor.
40 10 5 2
10 months ago
Preview
New Windows 7 And Windows Server 2008 Security Updates Confirmed Users of end-of-support Windows 7 and Windows Server 2008 platforms are advised of the availability of new security updates.

By me @forbes.com: Roll up, roll up, you legacy-loving loons, get your Windows 7 and Windows Server 2008 R2 security updates here. #kudos @0patch.bsky.social and @mkolsek.bsky.social

#infosec

www.forbes.com/sites/daveyw...

5 2 0 0
10 months ago

Oh

1 0 0 0