Stay updated on DoS threats. Explore the latest news and insights on Denial of Service attacks, prevention tips, and cybersecurity strategies.
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Background for this topic.
DoS, which stands for Denial of Service, is a type of cyber attack where the aim is to make a computer or network resource unavailable to its intended users. This is done by overwhelming the target with a flood of internet traffic, or sending information that triggers a crash. In information security, DoS attacks are a significant threat as they can disrupt the operation of businesses, governments, and other organizations.
These attacks exploit the limitations in the target system’s resources, such as the bandwidth of a network, the processing power of a server, or the capabilities of a website. Attackers can use various methods to carry out a DoS attack, including but not limited to, TCP SYN floods, UDP floods, and ICMP floods. The impact of a DoS attack can range from temporary service interruptions to long-term outages, potentially leading to data losses, financial harm, and damage to an organization's reputation.
In the context of information security, defending against DoS attacks involves implementing proper security measures such as firewalls, intrusion detection systems, and robust network architecture. It also entails active monitoring of network traffic to identify and mitigate potential threats promptly. As cyber attackers continue to innovate, staying informed and prepared against DoS attacks is a critical aspect of maintaining cybersecurity resilience.
Weekly headline count for the current query.
A new denial-of-service (DoS) attack dubbed HTTP/2 Bomb can be launched from a single machine to take down web servers within seconds. [...]
Cybersecurity researchers have discovered a remote denial-of-service exploit that affects major web servers, including NGINX, Apache HTTPD, Microsoft IIS, Envoy, and Cloudflare Pingora
DDoS attacks are increasingly being sold like subscription services, complete with pricing tiers, support, and reseller programs. Flare explores how the DDoS-as-a-Service market has evolved from scattered tools into polished attack platforms. [...]
Every single day, hackers are finding new ways to crash websites and steal data
DOJ Says KimWolf Powered Massive DDoS-for-Hire OperationsU.S. prosecutors charged a Canadian man accused of operating the KimWolf botnet, alleging the DDoS-for-hire platform compromised nearly two million IoT devices and powered attacks that reached record traffic volumes worldwide.
Authorities in Europe and North America have announced the dismantling of a criminal virtual private network (VPN) service used by criminal actors to obscure the origins of ransomware attacks, data theft, scanning, and denial-of-service attacks
U.S. and Canadian authorities arrested and charged a Canadian man with operating the KimWolf distributed denial-of-service (DDoS) botnet, which infected nearly two million devices worldwide. [...]
The U.S. Department of Justice (DoJ) on Thursday announced the arrest of a Canadian man in connection with allegedly operating a distributed denial-of-service (DDoS) botnet known as Kimwolf
Canadian authorities on Wednesday arrested a 23-year-old Ottawa man on suspicion of building and operating Kimwolf, a fast spreading Internet-of-Things botnet that enslaved millions of devices for use in a series of massive distributed denial-of-service (DDoS) attacks over the past six months. KrebsOnSecurity publicly named the suspect in February 2026 after the accused launched a volley of DDoS, doxing and swatting campaigns against this author and a security researcher. He now faces criminal hacking charges in both Canada and the United States.
Microsoft has disclosed that a privilege escalation and a denial-of-service flaw in Defender has come under active exploitation in the wild
Akamai Links Attack Growth to AI-Enabled Botnets and HacktivistsAkamai says AI-enabled botnets, geopolitical hacktivism and financially motivated cybercriminals drove a massive rise in DDoS, API and web attacks against global financial services firms in 2025, with banks suffering the majority of incidents.
Cybersecurity researchers have discovered four new npm packages containing information-stealing malware, one of which is a clone of the Shai-Hulud worm open-sourced by TeamPCP
An 18-year-old flaw in the NGINX open-source web server, discovered using an autonomous scanning system, can be exploited for denial of service and, under certain conditions, remote code execution. [...]
cPanel has released updates to address three vulnerabilities in cPanel and Web Host Manager (WHM) that could be exploited to achieve privilege escalation, code execution, and denial-of-service
Also, Taiwan Rail Hack, Massive DDoS Attack and Karakurt Jail SentenceThis week, Microsoft Edge exposed passwords, Taiwan police make arrests in high-speed rail hack and a 2.45 billion-request DDoS attack. A Karakurt negotiator jailed, North Korean IT worker scams led to prison terms and France detained a teen over a government data breach. Another Ivanti zero-day.
Cybersecurity researchers have exposed a new Mirai-derived botnet that self-identifies as xlabs_v1 and targets internet-exposed devices running Android Debug Bridge (ADB) to enlist them in a network capable of carrying out distributed denial-of-service (DDoS) attacks
Cisco patched a Crosswork Network Controller and Network Services Orchestrator denial-of-service vulnerability that requires manually rebooting targeted systems for recovery. [...]
The Apache Software Foundation (ASF) has released security updates to address several security vulnerabilities in the HTTP Server, including a severe vulnerability that could potentially lead to remote code execution (RCE)
313 Team tells Canonical: pay up or the packets keep coming
313 Team tells Canonical: pay up or the packets keep coming Canonical says its web infrastructure is under attack after a pro-Iran hacktivist group instructed its members to target the open source giant.…