Educational operational guidance for common security scenarios.
Repeatable response guidance for the events IT and security teams encounter most.
North Shield security advisories provide general educational and operational guidance. Organizations should evaluate recommendations against their own systems, risk profile and applicable vendor instructions.
Urgent Patch Management Procedures for Critical Windows Updates
Affected: Windows workstations and servers
Critical Windows security updates address vulnerabilities that are frequently exploited within days of publication. Organizations without a fast-track process for critical patches remain exposed longer than necessary.
Responding to Suspicious Microsoft 365 Sign-In Activity
Affected: Microsoft 365 tenants
Suspicious sign-ins frequently indicate stolen credentials or session tokens. Attackers commonly follow with mailbox rules, data exfiltration, or lateral movement.
Recommended Actions After an Employee Reports a Phishing Email
Affected: Email users
A reported phishing email frequently indicates a broader campaign. Prompt response limits credential theft, business email compromise, and secondary infections.
Reviewing Unsupported Operating Systems in Your Environment
Affected: Workstations, servers, and network devices past vendor end-of-support
Operating systems past end-of-support no longer receive security patches. They accumulate exposure over time and are common footholds during incidents.
Securing Remote Access Tools Against Unauthorized Use
Affected: Remote access and remote support platforms
Remote-access tools are frequent targets because they grant privileged access. Weak authentication, missing logging, or forgotten installations are common findings during incidents.
Backup Validation After a Security Incident
Affected: Backup infrastructure
After an incident, backups may contain compromised data or the attacker may have targeted the backup infrastructure directly. Recovering from an untrusted backup can extend the incident.
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