SonicWall announced a significant data breach affecting all users of its cloud backup service, revealing that hackers accessed firewall configuration files, including encrypted credentials and configuration data. Initially, the company reported less than 5% of customers were impacted, but later clarified that all configurations set to back up to the MySonicWall service were vulnerable. SonicWall is actively notifying affected users and has published a list of impacted devices on its portal, urging customers to reset passwords and follow mitigation steps. This incident raises concerns about the cybersecurity posture of organizations relying on cloud services, emphasizing the need for robust security measures in the face of evolving threats.