PLUS: 41K DHS Personnel Leak ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ ͏‌ 

Nov 02, 2026

Read in Browser

Nov 02, 2026

Read in Browser

Cybersecurity Insider Header

What else does stolen data unlock?

I’m looking beyond the breach totals today. A test system holds more than test data, personnel records offer more than names, and a multibillion-dollar theft raises questions about who can approve what. - Ken

Missed a newsletter? Read past issues here.

Here’s what you need to know:

  • Binance reports $6.3 billion crypto theft
  • Copenhagen University breach exposes data of 525K
  • Sony breach exposes 2.59 million customer records
  • DHS leak exposes 41,000 workers’ details
  • Broadcom fixes 89 Spring vulnerabilities
Advertise in Cybersecurity Insider

Zero-Day Download

Hackers Drain $6.3 Billion From Binance 

Binance halted withdrawals after attackers reportedly drained $6.3 billion from wallets used to process transactions.

Partners have located or frozen approximately $3 billion in affected assets, although recovery remains uncertain as investigators examine multiple points of compromise.

Hackers Drain $6.3 Billion From Binance

Source: Unsplash

My Take: I’d want proof that a compromised developer account cannot both initiate and approve a transfer, because a second approval offers little protection if the attacker controls both sides. 

Test whether a compromised developer account can access approver credentials or change transfer approval rules.

Copenhagen University Hack Exposes 525,000 People’s Data

Threat actors breached a University of Copenhagen test system, exposing 525,000 people’s personal data, including encrypted national identity numbers. 

The compromise also exposed information needed to decrypt those identifiers and access-card PINs for approximately 20,000 people.

My Take: I’d apply production-level safeguards to any test system holding real identity records or building-access credentials.

Have application owners check test databases for real access credentials and personal identifiers, then replace them with synthetic data.

Sony’s So-net Hack Exposes 2.59 Million Customer Records 

Sony Network Communications disclosed a breach exposing 2.59 million customer records and passwords for 54,401 email addresses.

Stolen personal details could aid impersonation, while email access could let attackers reset passwords on linked accounts.

My Take: I’d check whether our help desk would reset an account based on a birth date or account details an attacker could have stolen. 

Test account recovery with exposed personal details and require verification through a trusted channel.

Share this newsletter!

Facebook XLinkedIn
 

Threat Tracker

DHS Leak Exposes 41,000 Workers’ Details, Including ICE Agents 

Leaked records reportedly exposed contact details, sensitive assignments, and access groups for over 41,000 DHS employees and contractors. 

The details could aid impersonation attempts, but the access method and full dataset remain unverified.

DHS Leak Exposes 41,000 Workers’ Details, Including ICE Agents

Source: ChatGPT

My Take: I’d compare the exposed access groups with current permissions to identify employees an attacker might target for access to sensitive systems. 

Brief affected staff on likely impersonation attempts and verify unexpected access requests by calling the requester at a number listed in your internal directory.

Broadcom Fixes 89 Spring Vulnerabilities

Broadcom delivered early fixes for 89 vulnerabilities to qualifying TrueSource Spring Enterprise customers.

They also introduced tools to identify affected applications and automate patching. 

My Take: I’d track the time from patch availability to verified production deployment, because an automated patch request doesn’t confirm the application is running the patched version. 

Assign an application owner and deployment deadline to each applicable fix.

 

Security Tip of the Day

Could Your Team Stop a Mass Data Export? 

Large data leaks can expose millions of records, making it critical to know where sensitive information lives and who or what can access it.

Could Your Team Stop a Mass Data Export?

Source: ChatGPT

How to reduce data leak risk:

  • Remove unnecessary sensitive records and limit file sharing to authorized users.
  • Use DLP tools to detect or block unauthorized transfers and restrict bulk exports to approved roles.
  • Test your controls with synthetic records and confirm your team receives and investigates the resulting alerts.

Ask data owners to quantify how much sensitive information an attacker could steal through a single compromised account.

Security Tools You Can Use

  • Explore how data security posture management (DSPM) helps CISOs prioritize critical exposures, guide remediation, and measure risk reduction across cloud, on-premises, and hybrid environments. Read the article.
  • Automate like an admin — master Active Directory with PowerShell and save 74% today.
  • Build, deploy, and optimize in the cloud — master GKE, FinOps, and Google Cloud development for 87% off today.

🛡️ This section contains sponsored cybersecurity insights. Advertise with us!

Pulse Check

An attacker starts exporting your customer database. What happens next?

🛑 Export blocked: Controls stop the transfer.
🚨 Export flagged: It continues until we intervene.
❓ Outcome unknown: We haven’t tested this.

Yesterday's Pulse Check Results

Election Time: Where does your security confidence stand?

Pulse Check Results

Meet Our Writer:

Ken Underhill

Ken Underhill

Ken Underhill is an award-winning cybersecurity professional, bestselling author, and seasoned IT professional. He holds a graduate degree in cybersecurity and information assurance from Western Governors University, bringing years of hands-on experience to the field.

Love It? Hate It? Tell Us!
Love It? Hate It? Tell Us!
Sign Up
Contact Us

Secure your spotlight and Advertise in Cybersecurity Insider!

Cybersecurity Insider is a TechnologyAdvice business

© 2026 TechnologyAdvice, LLC. All rights reserved.

TechnologyAdvice, 3343 Perimeter Hill Dr., Suite 215, Nashville, TN 37211, USA.

FacebookX LinkedIn

Want to change how you receive these emails? Update your preferences or unsubscribe here.