Sunday, December 28, 2025

MikeGPT CyberSecurity

“Playbook for the Secure Enterprise”

Threat landscape infographic

Heroes, let's go to it. Here's a curated look at the current cybersecurity landscape for December 28, 2025.

Critical Threats

Researchers have demonstrated a performance-counter attack on AMD's Secure Encrypted Virtualization (SEV-SNP), a technology designed to isolate cloud workloads. This breaks the fundamental promise of trusted execution environments in the cloud.

Business Impact

For cloud-heavy organizations, this means sensitive workloads assumed to be hardware-isolated from the cloud provider or other tenants may be exposed, invalidating compliance assumptions for highly regulated data.

Recommended Action

Ask your cloud infrastructure team: "Are our high-security workloads relying solely on AMD SEV-SNP for isolation, and do we need to apply firmware updates or migrate critical instances?"

New intelligence suggests that secrets vaulting solutions and unmanaged Non-Human Identities (NHIs) are becoming the primary vector for attacks, rather than human error. Machine identities often possess over-privileged access that bypasses standard MFA controls.

Business Impact

An unchecked machine identity can allow an attacker to silently persist in the network, exfiltrating data without triggering user-behavior alarms, leading to massive undetected breaches.

Recommended Action

Conduct an immediate audit of machine identities. Ask your IAM team: "Do we have visibility into all non-human identities and are their secrets rotated automatically?"

SOX, HIPAA Entro Security ↗

High Severity

LaPoste

    The hacktivist group Noname057 has claimed responsibility for a major cyberattack disrupting La Poste's digital banking and online services. This highlights the continued geopolitical targeting of national critical infrastructure.

    Business Impact

    Service disruptions of this magnitude cause immediate revenue loss, customer dissatisfaction, and potential regulatory scrutiny regarding operational resilience (DORA/NIS2).

    Recommended Action

    Review DDoS mitigation strategies and geo-blocking policies. Ask your security team: "Is our perimeter resilient against the specific flooding techniques used by Noname057?"

Trust Wallet has confirmed a security incident in version 2.68 of its Chrome extension where malicious code led to a $7 million loss. Users are urged to update immediately.

Business Impact

For financial institutions or employees using corporate devices for crypto-assets, this represents a direct financial loss risk and a vector for endpoint compromise.

Recommended Action

Audit browser extensions across the enterprise. Ask your endpoint security team: "Can we block or audit the installation of the Trust Wallet extension version 2.68 across our fleet?"

A null pointer dereference vulnerability in the Linux Kernel's RDMA/rxe driver can lead to a system crash (DoS). This affects systems using Remote Direct Memory Access.

Effective Cloud Native Application Protection Platforms (CNAPP) must integrate with CI/CD pipelines, SIEM, and compliance frameworks to secure multi-cloud environments. Isolated security tools are failing to catch real-time threats.

Business Impact

Fragmented cloud security leads to blind spots where attackers can exploit misconfigurations, resulting in data breaches that go undetected until it is too late.

Recommended Action

Evaluate your cloud security stack. Ask your CISO: "Does our CNAPP solution integrate directly with our CI/CD pipeline to catch vulnerabilities before deployment?"

SOX, PCI DSS Fidelis Security ↗

Medium Severity

A null pointer dereference vulnerability in the Linux Kernel's RDMA/rxe driver can lead to a system crash (DoS). This affects systems using Remote Direct Memory Access.

Executive Briefing

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Entro Security · 10:00 PM ·

Vendor Spotlight

CyberArk Identity Security Platform

Spotlight Rationale: With multiple intelligence items today (Entro Security) highlighting the critical risks of **Non-Human Identities (NHIs)** and the failure of traditional secrets vaulting, CyberArk is selected for its specialized focus on securing these exact identity types.

Threat Context: Systemic Risk: Secrets Vaulting and Non-Human Identities

Platform Focus: CyberArk Identity Security Platform

CyberArk moves beyond traditional PAM by securing Non-Human Identities (NHIs)—the machine credentials identified in today's intelligence as a primary attack vector. Their platform automates credential rotation and isolates sessions, directly mitigating the risks of static secrets in CI/CD pipelines and cloud environments.

Actionable Platform Guidance: Ensure the 'Privileged Session Manager' is configured to audit machine-to-machine access, not just human access. Verify that the 'Central Credential Provider' is serving dynamic secrets to applications rather than static keys.

Source: CyberArk ↗

Detection & Response

Detection & Response Kit (4 items)

⚠️ Disclaimer: Test all detection logic in non-production environments before deployment.

1. Vendor Platform Configuration - CyberArk

# CyberArk Core PAS / Privilege Cloud Configuration Check # Goal: Verify NHI (Non-Human Identity) Security Posture 1. IMMEDIATE ACTION: Audit Unmanaged Privileged Accounts - Navigate to: PVWA > Accounts > Pending Accounts - Action: Onboard discovered local admin and service accounts immediately. - Verification: Ensure 'Pending Accounts' count decreases. 2. IMMEDIATE ACTION: Rotate Static Secrets - Navigate to: PVWA > Policies > Master Policy - Setting: 'Require password change every X days' - Action: Set to < 90 days for Machine Identities. 3. VERIFICATION: Check CPM Status - Navigate to: System Health Dashboard - Action: Verify Central Policy Manager (CPM) services are 'Active'.

2. YARA Rule for Trust Wallet Malicious Extension

rule TrustWallet_Malicious_Extension_Dec2025 { meta: description = "Detects artifacts associated with the malicious Trust Wallet Chrome Extension v2.68" author = "Threat Rundown" date = "2025-12-28" reference = "https://thehackernews.com/2025/12/trust-wallet-chrome-extension-bug.html" severity = "high" tlp = "white" strings: $s1 = "/upload" ascii wide $s2 = "/v1/gate" ascii wide $s3 = "chrome-extension://" ascii wide condition: ($s3 and ($s1 or $s2)) }

3. SIEM Query — MongoDB Unauthenticated Access (CVE-2025-14847)

index=security sourcetype="mongodb:log" (component="NETWORK" OR component="ACCESS") | eval risk_score=case( match(_raw, "unauthenticated") AND match(_raw, "heap"), 100, match(_raw, "connection accepted") AND user="unknown", 75, 1==1, 0) | where risk_score >= 75 | table _time, src_ip, dest_ip, component, message, risk_score | sort -_time

4. PowerShell Script — Detect Malicious Chrome Extension

$computers = "localhost", "WKSTN01", "WKSTN02" $targetExtId = "[Insert_TrustWallet_ID_Here]" # Replace with actual ID if known, or search by name foreach ($computer in $computers) { if (Test-Connection -ComputerName $computer -Count 1 -Quiet) { Invoke-Command -ComputerName $computer -ScriptBlock { $extensions = Get-ChildItem "C:\Users\*\AppData\Local\Google\Chrome\User Data\Default\Extensions" -ErrorAction SilentlyContinue foreach ($ext in $extensions) { # Check for suspicious manifest or version 2.68 artifacts if ($ext.Name -eq "Trust Wallet" -or $ext.FullName -match "2.68") { Write-Host "ALERT: Potentially malicious Trust Wallet version found on $env:COMPUTERNAME" } } } } }

This rundown should provide a solid overview of the current threat landscape. Thank you to all our cyberheroes for your diligence and hard work. Stay vigilant!

STIX 2.1 Threat Intelligence Bundle