Major Cyber Attacks in August 2026: US and EU Businesses Hit by Session Hijacking, Remote Access, and Insider Risk
Brief
August’s attacks showed how quickly trusted business activity can turn into risk. Across the US and Europe, attackers abused Microsoft 365 sessions, legitimate remote-management tools, business-themed files, and even hiring processes to reach corporate systems.
The result was a mix of account takeover, persistent attacker control, credential exposure, and insider risk that often looked legitimate at first.
Here’s what August’s biggest attacks reveal about where enterprise defenses are under pressure.
What August’s Attacks Revealed About Enterprise Risk
Taken together, August’s incidents point to a broader shift in enterprise risk. Attackers are increasingly targeting the points where organizations already place trust: identities, administrative tools, authentication flows, and employees.