18-lawyer firm in Westmount
Challenge: Ransomware attack via phishing — complete encryption of file server, $75,000 ransom demand.
Solution: Restored from Backblaze B2 immutable backups (Object Lock) from 8h before attack. No ransom paid.
Result: Business resumed in 16 hours. Data loss: 6 hours of input. Law 25 compliance maintained (CAI notification filed).