Matt Johansen

Matt Johansen

@mattjay.com

Friendly neighborhood cybersecurity guy | expect infosec news, appsec, cloud, dfir. | Long Island elder emo in ATX. vulnu.com <- sign up for my weekly cybersecurity newsletter

10.1K followers481 following814 posts

Woah. Trenchant, who develops zero-days and surveillance tools for Five Eyes intelligence agencies (US, UK, Canada, Australia, and New Zealand). Has had an insider accused of selling secrets to Russia.

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Woah. Trenchant, who develops zero-days and surveillance tools for Five Eyes intelligence agencies (US, UK, Canada, Australia, and New Zealand). Has had an insider accused of selling secrets to Russia.

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The criminal information doc is light on specifics - doesn't name the victim companies or detail nature of stolen trade secrets. But does list all the watches the FBI collected from him... We can connect some dots based on what they do as a company.

Arraignment/plea agreement hearing scheduled for Oct 29 in DC. Williams isn't currently in federal custody. His attorney John Rowley declined comment when contacted by TC.

Woah. Trenchant, who develops zero-days and surveillance tools for Five Eyes intelligence agencies (US, UK, Canada, Australia, and New Zealand). Has had an insider accused of selling secrets to Russia.

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Timeline: Williams allegedly stole 7 trade secrets between Apr '22-Jun '25, and an 8th between Jun-Aug '25. He was Trenchant's GM from Oct '24 until Aug '25, operating out of DC.

Worth noting that this comes on heels of recent internal Trenchant investigation into leaked hacking tools. Not yet clear if the two incidents are connected.

Woah. Trenchant, who develops zero-days and surveillance tools for Five Eyes intelligence agencies (US, UK, Canada, Australia, and New Zealand). Has had an insider accused of selling secrets to Russia.

This BBC reporter was offered 25% of a ransom payout if he gave hackers access to the corporate network. He played along so we got a look inside their tactic here:

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This BBC reporter was offered 25% of a ransom payout if he gave hackers access to the corporate network. He played along so we got a look inside their tactic here:

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Worth noting actors maintained professional demeanor throughout most interactions. Only escalated to aggressive tactics (MFA bombing) after patience wore thin. Even apologized and said that was just them testing the login page.

Funnily enough, I was looking for Medusa stuff while writing this thread, and CISA's advisory on how to protect yourself from them is the top search result. While this is all good advice, it wouldn't have done much to stop this type of attack. Hacks are just logins in 2025.

This BBC reporter was offered 25% of a ransom payout if he gave hackers access to the corporate network. He played along so we got a look inside their tactic here:

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When reporter delayed, group pivoted to aggressive MFA bombing - continuously triggering 2FA notifications hoping for accidental approval. Same technique used in 2022 Uber compromise.

Group referenced previous "successful" insider compromises at UK healthcare and US emergency services orgs. Claims align with known Medusa TTPs focusing on high-value targets.

This BBC reporter was offered 25% of a ransom payout if he gave hackers access to the corporate network. He played along so we got a look inside their tactic here:

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Threat actor claimed to be a "reach out manager" for Medusa - a Ransomware-as-a-Service operation believed to operate from Russia/CIS region. Group has hit 300+ victims in past 4 years per US cyber authorities. (img: TheHackerNews)

They requested specific network reconnaissance via command line queries, demonstrated knowledge of BBC's IT infrastructure, and offered "trust payment" of 0.5 BTC as deposit.

This BBC reporter was offered 25% of a ransom payout if he gave hackers access to the corporate network. He played along so we got a look inside their tactic here:

Initial contact came to @JoeTidy via Signal from "Syndicate" offering 15% of potential ransom payment for access to BBC systems. Offer later increased to 25% of what they claimed would be "1% of BBC's total revenue."

I think the separation of dev and prod is one of the most important things we need to solve in AI coding land. Keys. Secrets. Deployment. All that jazz. None of the tools help, if anything they make it super easy to do wrong.

That viral women's only dating app 'Tea' was hacked by some 4chan users. They didn't phish, social engineer, or use some crazy hacker technique either - the database was just public

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That viral women's only dating app 'Tea' was hacked by some 4chan users. They didn't phish, social engineer, or use some crazy hacker technique either - the database was just public

They found the database exposed on Google's Firebase. The app is meant to be basically the "are we dating the same man?" Facebook group in a dating app. In order to verify that the users are women, they ask for photos and driver's licenses.

"No authentication, no nothing. It's a public bucket" This is why security and privacy pros hate these ID verification laws that require drivers license uploads - these apps just can't keep this stuff secure.

If I was a bad guy who was looking for memory vulns, I'd be ALL OVER these new hotness web browsers. (Comet, Arc, etc.) Market share is small but much more valuable targets. - Teams behind them way smaller than ...Google

Which Windows drivers keep Microsoft’s security engineers busiest - and which ones do attackers actually exploit? Artem Baranov did the dang math. He scraped every CVE bulletin from Jan 2022 through May 2025 and built a clean data set of kernel-mode driver patches.

🚨 New macOS backdoor alert: North-Korean hackers are disguising a Zoom update that drops malware built to hijack laptops and steal data & passwords. If you or your devs run macOS, keep scrolling.👇

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🚨 New macOS backdoor alert: North-Korean hackers are disguising a Zoom update that drops malware built to hijack laptops and steal data & passwords. If you or your devs run macOS, keep scrolling.👇

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The data exfiltration: Keychain creds, browser data, Telegram chats, then push over WebSockets - encrypted channel, tricky for network sensors that ignore non-HTTP(S) traffic

macOS isn’t safe just because of Gatekeeper social-engineering + obscure languages (Nim) = new blind spots. Patch, monitor WebSocket egress, & warn employees: *no legit Zoom update arrives as an AppleScript!* RT to keep teams safe.

🚨 New macOS backdoor alert: North-Korean hackers are disguising a Zoom update that drops malware built to hijack laptops and steal data & passwords. If you or your devs run macOS, keep scrolling.👇

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Stage-2 drops two binaries in /private/var/tmp • `a` (C++) - kicks off data-stealing chain • `installer` (Nim) - sets up persistence via signal handlers so killing the process re-installs the backdoor on reboot.

Nasty little persistence trick - malware revives itself when killed. It intercepts `SIGINT` / `SIGTERM`, then rewrites LaunchAgents on shutdown. "any user-initiated termination of the malware results in the deployment of the core components, making the code resilient to basic defensive actions."

🚨 New macOS backdoor alert: North-Korean hackers are disguising a Zoom update that drops malware built to hijack laptops and steal data & passwords. If you or your devs run macOS, keep scrolling.👇

The attacker pretends to be a trusted contact → DM on Telegram → Calendly invite → follow-up email with a Zoom link that tells victims to “run this update script.” It's been hyper successful and catching founders/devs off-guard

That script (`zoom_sdk_support.scpt`) hides *10,000 blank lines* scroll forever, never see the payload. The last 3 lines fetch stage-2 from `support.us05web-zoom[.]forum` (notice the look-alike Zoom domain)