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.
A French dad faces jail time and a hefty fine after using a signal jammer to prevent his kids from going online and taking the rest of a nearby town down with them. [...]
Five major Canadian banks went offline for hours blocking access to online and mobile banking as well as e-transfers for customers. The banks hit by the outage include Royal Bank of Canada (RBC), BMO (Bank of Montreal), Scotiabank, TD Bank Canada, and the Canadian Imperial Bank of Commerce (CIBC). [...]
What geopolitical standoff could this possibly be linked to? The websites of the Ukrainian military and at least two of the nation's biggest banks were knocked offline in a cyberattack today.…
The BlackCat ransomware group, aka ALPHV, has claimed responsibility for the recent cyber attack on cargo and hospitality services giant Swissport that caused flight delays and service disruptions. [...]
Sports equipment and sportswear brand Mizuno is affected by phone outages and order delays after being hit by ransomware, BleepingComputer has learned from sources familiar with the attack. [...]