Cyber Threat Intelligence Analyst at Rabobank | Threat Hunter | Malware Analyst |. (All opinions expressed here are mine only). 🇳🇱

The Netherlands
Joined April 2022
Arda Büyükkaya retweeted
The private keys of eight eMudhra intermediate CA certificates have been compromised. They chain to roots trusted by the Mozilla, Microsoft, Apple and Chrome root programs and by many downstream trust stores. emudhra.we-have-a-problem.co…
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Arda Büyükkaya retweeted
🧨🔥 php.net
PHP powers Wikipedia, WordPress publishing and business websites, WooCommerce online stores, Drupal sites and Adobe Commerce storefronts w3techs.com/technologies/det…
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Arda Büyükkaya retweeted
Okay, since the news is already out: an RCE vulnerability in PHP core, CVSS 10.0. Further details are scheduled for release on October 20. Only PHP 8 will receive patches.
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‼️ Ahold Delhaize says the outage at its US and European grocery chains was a cyberattack. Food Lion and Stop & Shop online shopping is still down. It has no evidence yet that sensitive data was taken. It filed a police report Monday.
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Arda Büyükkaya retweeted
october 2026 will go down as the most cybersecurity unaware month of all time
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‼️BREAKING: The hacker behind the AfD email leak told us they targeted the party to expose what they call its greed and financial misuse. "Hacktivism is often the only answer to populism of this magnitude." "The AFD takes a legitimate frustration and uses it to rob the poorest 20% of this country," they wrote. "The amount of financial misuse in these documents is appalling, regardless of what you think of immigrants."
‼️BREAKING: A leak site published 421.179 internal emails from Germany's far-right AfD, including the mailbox of ex-leader Alexander Gauland. ICD found it shows AI-written summaries, not the emails. The newest is from 12 September. Its own index file names a server "afd_exfil".
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Arda Büyükkaya retweeted
krebsonsecurity.com/2026/10/… New research from @briankrebs which indicates that the recently arrested 54-year-old cybersecurity executive was deeply in the loop on recent ShinyHunters attacks... and his former business partner also had odd ties to threat actors...
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Arda Büyükkaya retweeted
She said she was a model...
Bricklayer, 49, travels 1,200 miles for dream girl - only to discover she's AI-generated trib.al/3CcGOfk
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honestly, i fucking love the Netherlands "why aren't the trains running?" "the traffic control left to have drinks at an office party"
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Arda Büyükkaya retweeted
The autumn gloom has arrived in Leiden today and it’s absolutely beautiful
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Arda Büyükkaya retweeted
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Arda Büyükkaya retweeted
So true king
Replying to @SAlsaif7 @bmmashat
"The weakest link in the security chain is the human element" 🙂
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Arda Büyükkaya retweeted
Sophos makes security software used by thousands of businesses. When hackers started breaking into their firewalls, Sophos hid a surveillance tool inside a routine software update to watch the attackers in real time. What they uncovered went far beyond just their own products.
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Arda Büyükkaya retweeted
🚨 The "sophisticated recording device" OpenAI discovered is available for $23.51. The Antenna they found is available for $0.50.
We discovered a sophisticated recording device that was hidden inside one of our offices. We used our models to understand the device and where it had come from, identifying that a specific employee had planted it a few days earlier. We referred the matter to the FBI, and we’re grateful to the agents and prosecutors who moved quickly to make an arrest. The FBI’s investigation is ongoing and we will continue to support their work. At this time, we have no indications of this individual inappropriately accessing or exfiltrating model weights, source code, or customer data. The employee was terminated. We take protecting our technology, data, and people seriously, and as a matter of national importance. Our security program is designed to protect against a wide range of threat actors, from insider risks to cybercriminals to nation states, and this case is an example of how AI can help address these sophisticated security threats.
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Arda Büyükkaya retweeted
Can someone tell me if my TV is backdoored? (This week has been amazing if you are into hardware implants and TSCM)
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Arda Büyükkaya retweeted
🤖 Made with AI
JUST IN: Saudi employee of OpenAI arrested after planting an audio recording device in the company's executive conference room - DOJ
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