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~7 MIN READ
FACTGoogle committed the fix for its Brotli decoder bug (CVE-2026-111497) on February 27, but no Brotli release shipped it until October 21, almost eight months later. (The Hacker News, October 2026)
The Signal
 
The biggest risks this week weren't shiny new tools. They were old trust: vendor portals, "anonymous" tip lines, forgotten updaters and patches nobody finished applying.

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In this edition
 📌 Big Cyber News
 🚨 Can't Miss
 🤖 AI in Cyber
 🕵️ Threat Intel
 🛠️ Tools & Tactics
 🧪 Strange Cyber
📌 Big Cyber News
 
Data Breach / Healthcare
The Lab That Serves One in Three US Adults Is Back to Paper Requisitions
Intro
Quest Diagnostics says it serves half of US doctors and hospitals and one in three American adults each year. Last week, its customers went back to paper.
What Happened
Quest learned October 21 that an intruder had gotten into Quanum Lab Services Manager (LSM), the online platform clinicians use to order tests, track status and view results. In an SEC filing, it said it believes some patient data was exposed; which data, and how many people, is still unknown. Quest shut LSM down, paused Essential Insights and LabHQ, pointed customers to paper requisitions or Quanum eLabs, and informed law enforcement. No group has claimed it.
Why It's Important
Lab results are among the most sensitive data in healthcare, and Quest is still in litigation over the 2019 AMCA billing-vendor breach that exposed about 11.9 million of its patients. Baylor Genetics recently disclosed a breach of more than 2.8 million patients, too.
The Other Side
Quest says customer-facing operations weren't disrupted, labs connected through direct LIS or EMR interfaces weren't affected, and the incident is unrelated to the recent PHP bugs.
 
👉 Takeaway
If your practice used Quanum LSM, expect patient questions and prepare answers now. Everyone else: list the vendor portals that hold your patients' or customers' data and confirm who can log in to them.
TL;DR: An intruder got into the portal clinicians use to order Quest lab tests, and some patient data was exposed.
Further reading: BleepingComputer
🚨 Can't Miss
 
 
Data Breach
CBC reported that more than 1.5 million tips from Crime Stoppers chapters across Canada were exposed, about half with personal details, and reached more than a dozen tipsters. The data came from a March hack of vendor Navigate360. Toronto froze operations hours later. Navigate360 told Toronto in April its data wasn't taken, then said in June it was.
→ "Anonymous" is a vendor promise; ask how it's enforced.
 
Data Breach
Capcom detected and confirmed the intrusion October 19. The records hold email addresses, account creation dates, login counts and the last sign-in IP; 43 also include birth date, gender and region. Attackers changed passwords on 196 accounts, since reset. Capcom says there's no evidence passwords were stolen, card data wasn't affected, and it hasn't said how they got in.
→ Expect Capcom-themed phishing; skip the links.
 
Vulnerability
CVE-2026-113380 in RingRTC, the library behind Signal calls, let a caller flood the call's event queue so your hang-up got stuck. Researcher Imahian says audio, and possibly video, "keeps flowing to the attacker while the victim believes the call ended." It scores CVSS 9.3, hits Android, iOS and Desktop builds before RingRTC 2.72.0, and has no known exploitation.
→ Update Signal on every device you call from.

How Jennifer Aniston’s LolaVie brand grew sales 40% with CTV ads

For its first CTV campaign, Jennifer Aniston’s DTC haircare brand LolaVie had a few non-negotiables. The campaign had to be simple. It had to demonstrate measurable impact. And it had to be full-funnel.

LolaVie used Roku Ads Manager to test and optimize creatives — reaching millions of potential customers at all stages of their purchase journeys. Roku Ads Manager helped the brand convey LolaVie’s playful voice while helping drive omnichannel sales across both ecommerce and retail touchpoints.

The campaign included an Action Ad overlay that let viewers shop directly from their TVs by clicking OK on their Roku remote. This guided them to the website to buy LolaVie products.

Discover how Roku Ads Manager helped LolaVie drive big sales and customer growth with self-serve TV ads.

The DTC beauty category is crowded. To break through, Jennifer Aniston’s brand LolaVie, worked with Roku Ads Manager to easily set up, test, and optimize CTV ad creatives. The campaign helped drive a big lift in sales and customer growth, helping LolaVie break through in the crowded beauty category.

🤖 AI in Cyber
 
 
Ransomware
SOCRadar found an exposed server holding 8,257 messages across 133 sessions from a Russian-speaking operator working with INC and The Gentlemen affiliates. A human writes victim-specific prompts and approves each step while OpenCode, running OpenRouter-hosted models, does the hacking. About 62 organizations were targeted, over half in the US. When models refused, the operator called it a red team test.
→ Patch edge gear and kill password reuse.
 
AI Security
Symantec caught an agent that hunts for unprotected AI models, then makes them plan and run its attacks while the owner pays for compute. It scans for targets, exploits web frameworks, steals credentials and installs crypto miners, for up to 100,000 steps without human approval. Its honeypot logged more than 127,000 requests from tens of thousands of addresses.
→ Require authentication on every model server, AI gateway and MCP endpoint.
🕵️ Threat Intel
 
 
Nation-State
ESET says UAC-0099 phished its way into a Ukrainian logistics company on July 16, 2025, then planted MythicRatatoskr, a new backdoor with its command server on the Yggdrasil mesh network. It handed access to Sandworm, which wiped the victim September 17, 2025 via Group Policy. ESET says no state-aligned actor had been documented abusing Yggdrasil this way.
→ One crew's quiet phish can be another crew's wiper.
 
Bootkit
Kaspersky found BlackX, tied with medium confidence to APT41, in early-2026 espionage against diplomatic agencies in Tajikistan, Uzbekistan and Turkmenistan. It used Baton Drop (CVE-2022-21894), the BlackLotus flaw, to load a driver that kills security processes. Victims were patched but never triggered Microsoft's Secure Boot revocations, which don't happen automatically.
→ Patching isn't revoking: apply the boot manager revocations.
🛠️ Tools & Tactics
 
 
Patch Management
CVE-2026-111497, a memory-corruption flaw in Google's Brotli decoder, lets crafted compressed data crash a program, leak memory or run code. Imperva ran code on Node.js; no in-the-wild attacks yet. The play: update to Node.js 22.23.4, 24.22.1 or 26.12.1, Bun 1.4.4, Brotli 1.2.1 or brotlicffi 1.2.1.0, plus patched Envoy and Istio, then restart services and rebuild images. Can't patch? Reject requests with Content-Encoding: br or uninstall Python's Brotli packages. Dropping "br" from Accept-Encoding doesn't help.

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🧪 Strange Cyber
 
Strange but real
Researchers Hacked Millions of Forgotten Popcorn Time Installs, Just to Turn Them Off
Intro
Most people who find a way into millions of computers sell it. Eye Security used it to shut the door.
What Happened
Time4Popcorn, an abandoned Popcorn Time fork, shipped Windows and macOS updaters that checked the lapsed domain popcorntimeupd.xyz over plain HTTP and ran whatever came back as SYSTEM or root (CVE-2026-30612). Eye Security registered it and saw up to 3 million Windows and 350,000 macOS clients calling in, including from corporate, government and military networks. From November 2025 to March 2026 it pushed an "update" that only stopped and disabled the updater: 2 million downloads, and requests fell 98% by March 1.
Why It's Important
Forgotten software is still running software. "If we were able to send an update, we could potentially get code execution on millions of systems," the researchers wrote.
The Other Side
Pushing code to strangers' machines without asking is exactly what attackers do, and antivirus flagged the fix. Android users are still exposed, since updates there need a tap.
 
👉 Takeaway
Hunt for abandoned apps with auto-updaters across your fleet and uninstall them. The domains now sit with The Shadowserver Foundation, but Popcorn Time users should remove the app entirely.
TL;DR: Researchers grabbed an abandoned app's update domain and used it to disable the updater on millions of PCs.
Further reading: BleepingComputer

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