Case Study · Healthcare / Clinical

Cybersecurity Remediation and Hardening After a Close Call

After a near-miss phishing incident, a Northern Ontario clinic engaged us to rebuild its security baseline MFA, conditional access, EDR, email security, immutable backups, and documented controls aligned to PHIPA and cyber-insurance expectations.

Industry
Healthcare / Clinical
Size
30 staff across two clinic sites
Region
Greater Sudbury and North Bay, Ontario

Client name and confidential details have been omitted. Specifics generalized to protect the business.

The Challenge

  • Phishing email harvested a credential; account was used briefly before being noticed
  • No MFA on Microsoft 365; legacy authentication still enabled
  • Endpoint protection was the default Windows tool with no central management
  • Backups configured but never test-restored and not isolated from production credentials
  • Cyber insurance renewal questionnaire could not be answered honestly

Assessment

  • Conducted incident triage: scoped account access, reset credentials, reviewed sign-in logs
  • Performed Microsoft 365 tenant security review (Secure Score and manual control review)
  • Reviewed endpoint coverage and patch status across all clinic workstations
  • Reviewed backup configuration and retention against PHIPA and ransomware scenarios

The Solution

  • Enabled MFA tenant-wide and rolled out conditional access policies
  • Disabled legacy authentication and tightened external-sharing defaults
  • Deployed centrally managed EDR (Intercept X) on every workstation and server
  • Implemented advanced email filtering and anti-impersonation policies
  • Redesigned backup with Veeam + immutable cloud repository and isolated credentials
  • Documented controls in a single security baseline document for insurance and PHIPA review

Results

100%

MFA enforcement across staff, contractors, and admins

0

legacy authentication sign-ins after policy enforcement

Immutable

backup retention defending against ransomware

Yes

cyber-insurance renewal questionnaire answered honestly across all controls

Technologies Used

  • Microsoft 365
  • Conditional Access
  • Sophos Intercept X (EDR)
  • Veeam Backup
  • Email Security

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