Telus Digital hit with massive data breach

In other words, he said, the systems likely trusted the attacker, noting that, based on publicly available details, this incident aligns with a growing class of data theft first operations that include:

  • Long-term persistence using valid credentials or trusted pathways
  • Lateral movement across internal systems once inside
  • Slow, controlled data staging to avoid triggering alerts
  • Large-scale exfiltration disguised as normal encrypted traffic
  • Public disclosure or extortion signaling once data is secured.

According to Jean-Louis, “this is not smash-and-grab ransomware. It is strategic, disciplined, and optimized for maximum leverage. The [attack] actually exposes a blind spot many organizations still have: [they] are good at detecting ‘bad behavior,’ but not abnormal trusted behavior.”

Priorities for mitigation

This incident, he pointed out, reinforces the importance of several priorities for organizations, including:



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