A recently disclosed vulnerability in the Common Unix Printing System (CUPS) open-source printing system can be exploited by threat actors to launch distributed denial-of-service (DDoS) attacks with a 600x amplification factor.
Microsoft confirmed today that a nine-hour outage on Tuesday, which took down and disrupted multiple Microsoft 365 and Azure services worldwide, was triggered by a distributed denial-of-service (DDoS) attack.
Newly discovered HTTP/2 protocol vulnerabilities called
IT security software company Ivanti has released patches to fix multiple security vulnerabilities impacting its Connect Secure and Policy Secure gateways.
This joint guide, Understanding and Responding to Distributed Denial-Of-Service Attacks, addresses the specific needs and challenges faced by organizations in defending against DDoS attacks. The guidance now includes detailed insight into three different types of DDoS techniques:
Volumetric, attacks aiming to consume available bandwidth.
Protocol, attacks which exploit vulnerabilities in network protocols.
Application, attacks targeting vulnerabilities in specific applications or running services.
A new Denial-of-Service (DoS) attack targets application-layer protocols that draw on the User Datagram Protocol (UDP) for end-to-end communication. The vulnerability affects both legacy and contemporary protocols. Discovered by Christian Rossow and Yepeng Pan, the attack puts an estimated 300,000 Internet hosts and their networks at risk.
Microsoft says the early June disruptions to its Microsoft’s flagship office suite — including the Outlook email apps — were denial-of-service attacks by a shadowy new hacktivist group. In a blog post published Friday evening after The Associated Press sought clarification on the sporadic but serious outages, Microsoft confirmed that that they were DDoS attacks by a group calling itself Anonymous Sudan, which some security researchers believe is Russia-affiliated. The software giant offered few details on the attack. It did not comment on how many customers were affected.
Cisco has disclosed today a high-severity zero-day vulnerability affecting the latest generation of its IP phones and exposing them to remote code execution and denial of service (DoS) attacks.
