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Incident

OC Transpo

Incident posture

Attack window
Dec 2020
Location
Canada
Status
Historical
CIA posture
Available to members
Updated
2025-12-09 00:00

Linked entities

Victim
OC Transpo
Threat actors
0 actors
Sources
1 source

Timeline

Occurred
Dec 2020
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

A cybersecurity incident impacted OC Transpo My Alerts subscribers, potentially compromising their email addresses and passwords. The City of Ottawa investigated the breach, confirming no financial or credit card information was affected, and advised users with reused passwords to update them. The incident prompted notifications to alert service subscribers about the unauthorized access to their credentials.

Motives

Detailed motive labels are available to members.

3 motives

TTPs

Detailed technique labels are available to members.

2 techniques

Description

On or around December 7, 2020, the City of Ottawa publicly disclosed a cybersecurity incident impacting subscribers of its OC Transpo My Alerts system. The city initiated an investigation after detecting unauthorized access to the alert service, which provides transit updates via email. Compromised data included subscribers’ email addresses and associated account passwords stored within the My Alerts system. Officials confirmed the breach did not affect financial data or credit card information, as those details were not collected or stored by the service. The City of Ottawa promptly notified affected subscribers about the incident and advised precautionary measures.

The breach prompted the city to urge all My Alerts users to change their passwords, particularly those who reused identical credentials across multiple online accounts. This recommendation aimed to mitigate potential credential-stuffing attacks leveraging exposed email-password pairs. No operational disruptions to OC Transpo services were reported as a direct result of the incident. The public advisory emphasized the absence of compromised payment systems while reinforcing the importance of password hygiene. Ottawa’s response focused on subscriber notification and preventive guidance rather than disclosing technical specifics about the intrusion vector or attacker identity.

Sources

Sources available to members: 1 source.

CSIDB