Outages can disrupt security tools and critical services, showing how failures in infrastructure, vendors, or recovery plans affect cyber resilience.
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Background for this topic.
Outage is a period when a system, network, application, or online service is unavailable or cannot perform its intended function. It may be planned maintenance or an unplanned disruption caused by equipment or software failure, misconfiguration, a dependency problem, natural hazards, or a denial-of-service attack. The tag generally concerns availability incidents, not every performance issue or security breach.
For security practitioners, an outage requires determining whether malicious activity contributed to the disruption while preserving relevant logs, network telemetry, and system state for investigation. Defenses include capacity planning, segmented and redundant architecture, tested failover and recovery procedures, and controls that limit the effect of DDoS traffic or compromised dependencies. Emergency changes made during recovery should be authorized and recorded, since they can create new vulnerabilities or affect data integrity. Clear incident ownership and communications help coordinate technical response without obscuring the cause or scope.
Feds say Mirai-spawned botnet blasted 370K attacks before AWS and pals helped yank its servers RapperBot, a botnet-for-hire blamed for hundreds of thousands of DDoS attacks, has been yanked offline by the Feds, who also hauled in its alleged Oregon-based mastermind.…
Microsoft is investigating an ongoing issue preventing users across North America from accessing Office.com and the company's Copilot AI-powered assistant. [...]
A 22-year-old Oregon man has been arrested on suspicion of operating "Rapper Bot," a massive botnet used to power a service for launching distributed denial-of-service (DDoS) attacks against targets -- including a March 2025 DDoS that knocked Twitter/X offline. The Justice Department asserts the suspect and an unidentified co-conspirator rented out the botnet to online extortionists, and tried to stay off the radar of law enforcement by ensuring that their botnet was never pointed at KrebsOnSecurity.
The Warlock ransomware gang has taken credit for the cyber-attack after the UK telco giant publicly confirmed an incident on August 14
Support Portals Offline as Ransomware Gang Claims It Stolen DataBritish-based multinational telecom Colt Technology Services said a "cyber incident" is responsible for days-long disruptions to its customer portal and support services. The WarLock ransomware operation took responsibility for the hack, asserting it stole "1 million documents."