Ghost in the Resolver: The Dark Art of DNS Tunnels
How DNS tunneling smuggles data inside ordinary lookups, why it works, and how defenders catch it.
Tag
Security
Security advisories, patches, and best practices
Kerberos RC4 Is Off: What Broke and How to Check
July 2026 removed the Kerberos RC4 rollback switch. The events to pull and the accounts to fix.
BitLocker Asks for Recovery Key After June Update
BitLocker keeps asking for your recovery key after the June 2026 update? Suspend and resume protection to stop the Secure Boot prompt.
Custom Folder Icons Missing After June Windows Update
Custom folder icons or localized names gone after June 2026 update KB5094126? Intentional desktop.ini hardening. How to restore them.
Fix Kernel Trust Lockdown Driver Failure in Windows 11
Fix Kernel Trust Lockdown in Windows 11 April 2026 Update (Build 26200) with clear, tested steps.
BlueHammer: Unpatched Windows Defender Zero-Day
BlueHammer exploits a race condition in Windows Defender to escalate to SYSTEM. No patch yet. Here's what to do.
Microsoft 365 Security Baseline for SMBs
Set up MFA, Conditional Access, and Entra ID hardening for your small business. A practical Microsoft 365 security baseline with clear steps.
Fix CVE-2026-20817: WER Privilege Escalation
CVE-2026-20817 lets attackers escalate to SYSTEM via Windows Error Reporting. Patch now, check exposure, and lock it down.
Fix CVE-2026-21509: Microsoft Office Security Bypass
Microsoft confirmed a high-risk security bypass vulnerability, CVE-2026-21509, which is currently being exploited. This flaw lets attackers get around Object Linking and Embedding (OLE) security.
MFA Fatigue Attacks: How Push Bombing Works
MFA fatigue attacks exploit human nature. Learn how push bombing bypasses authentication and how to defend your business against it.
Fix AADSTS53003 Conditional Access Blocked
Outlook error AADSTS53003 means a Conditional Access policy is blocking sign-in. Find the policy and fix device, location, or auth issues.
By the Numbers: Small Business Cybersecurity in 2026
40+ verified cybersecurity statistics for small businesses in 2026. Ransomware costs, phishing rates, and cyber insurance trends.