All news with #ddos surge tag

Ukrainian Hacker Charged for Aiding Russian Hacktivists

🔒 U.S. prosecutors arraigned 33-year-old Victoria Dubranova, accusing her of supporting Russian state-linked hacktivist groups in cyberattacks against critical infrastructure, including water systems and election-related targets. Dubranova, known by aliases such as Vika and SovaSonya, was extradited this year and has pleaded not guilty to charges tied to NoName057(16) and CyberArmyofRussia_Reborn (CARR). She faces separate trials in February and April 2026 and potential sentences of up to 27 years and 5 years under the respective indictments.

CISA, FBI Warn: Protect Critical Infrastructure Now

🚨 CISA, the FBI, NSA, DOE, EPA, DOD’s DC3, and international partners issued a joint advisory alerting operators that pro‑Russia hacktivist groups are conducting opportunistic, low‑sophistication attacks against U.S. and global critical infrastructure. These actors exploit internet‑facing OT components (notably VNC and SCADA) and sometimes combine intrusions with DDoS. The advisory urges immediate mitigations: reduce OT exposure, improve asset management, and enforce robust authentication.

Weekly Cyber Recap: React2Shell, AI IDE Flaws, DDoS

🛡️ This week's bulletin spotlights a critical React Server Components flaw, CVE-2025-55182 (React2Shell), that was widely exploited within hours of disclosure, triggering emergency mitigations. Researchers also disclosed 30+ vulnerabilities in AI-integrated IDEs (IDEsaster), while Cloudflare mitigated a record 29.7 Tbps DDoS attributed to the AISURU botnet. Additional activity includes espionage backdoors (BRICKSTORM), fake banking apps distributing Android RATs in Southeast Asia, USB-based miner campaigns, and new stealers and packer services. Defenders are urged to prioritize patching, monitor telemetry, and accelerate threat intelligence sharing.

Critical Sneeit WordPress RCE Exploited in the Wild

🔴 A critical remote code execution flaw in the Sneeit Framework WordPress plugin (CVE-2025-6389) is being actively exploited, according to Wordfence. The issue, patched in version 8.4 on August 5, 2025, affects all releases up to and including 8.3 and lets unauthenticated attackers invoke arbitrary PHP functions via sneeit_articles_pagination_callback() and call_user_func(). Wordfence reported more than 131,000 blocked attempts since disclosure, including tens of thousands in a single day, and observed uploads of PHP shells and creation of malicious admin accounts on vulnerable sites.

Suspicious CDN-Header Traffic May Signal Evasion Tests

🔍 SANS honeypots detected increased HTTP requests containing CDN-related headers that may indicate probing to evade CDN protections. Researchers observed headers referencing Cloudflare (Cf-Warp-Tag-Id), Fastly (X-Fastly-Request-Id), Akamai (X-Akamai-Transformed) and an anomalous X-T0Ken-Inf0. Experts warn this could be reconnaissance to bypass CDNs and reach origin servers and urge origin hardening such as IP allowlists, validated tokens, or private connectivity.

Cloudflare Mitigates Record 29.7 Tbps DDoS by AISURU

🚨 Cloudflare reported it detected and mitigated a record 29.7 Tbps distributed denial-of-service attack attributed to the AISURU botnet. The UDP "carpet-bombing" assault, which randomized packet attributes and targeted an average of 15,000 destination ports per second, lasted 69 seconds. Cloudflare also mitigated a 14.1 Bpps event and said AISURU may comprise 1–4 million infected hosts, while blocking thousands of related hyper-volumetric attacks and noting significant quarterly increases in DDoS activity.

Aisuru botnet behind record 29.7 Tbps DDoS attack impact

⚠️ In three months the Aisuru botnet has been linked to more than 1,300 DDoS attacks, including a record peak of 29.7 Tbps in Q3 2025 that Cloudflare mitigated. The botnet, offered as a rental service, leverages an estimated 1–4 million compromised routers and IoT devices exploited via known vulnerabilities and weak credentials. The record incident lasted 69 seconds and used UDP carpet‑bombing across roughly 15,000 destination ports per second; Cloudflare reports a sharp rise in hyper‑volumetric attacks that can disrupt ISPs and critical services.

Cloudflare Q3 2025 DDoS Threat Report: Aisuru Peaks

📈 The 23rd edition of Cloudflare’s Quarterly DDoS Threat Report reviews Q3 2025 data and spotlights the unprecedented Aisuru botnet, estimated at 1–4 million infected hosts. Aisuru launched routine hyper-volumetric attacks exceeding 1 Tbps and 1 Bpps, peaking at 29.7 Tbps and 14.1 Bpps, while Cloudflare mitigated 8.3 million DDoS events in the quarter. Network-layer attacks dominated the mix, and the report warns that short, high-volume strikes often outpace manual defenses, underscoring the need for global, automated mitigation.

ThreatsDay: AI Malware, Voice Scam Flaws, and IoT Botnets

🔍 This week's briefing highlights resurgent Mirai variants, AI-enabled malware, and large-scale social engineering and laundering operations. Security vendors reported ShadowV2 and RondoDox infecting IoT devices, while researchers uncovered the QuietEnvelope mail-server backdoors and a Retell AI API flaw enabling automated deepfake calls. Regulators and vendors are pushing fixes, bans, and protocol upgrades as defenders race to close gaps.

ShadowV2 Mirai Botnet Tested During AWS Outage Activity

⚠️ Fortinet’s FortiGuard Labs identified a Mirai-based botnet called ShadowV2 that exploited known vulnerabilities in routers and other IoT devices from D-Link, TP-Link, DD-WRT and others during a major AWS outage, appearing active only for the outage window and possibly a test run. The malware is delivered via a downloader (binary.sh) that fetches payloads from 81[.]88[.]18[.]108 and uses XOR-encoded configuration and Mirai-style strings. ShadowV2 supports UDP, TCP and HTTP DDoS floods and receives commands from a C2 at 198[.]199[.]72[.]27. Fortinet published IoCs and emphasizes keeping firmware updated, noting many affected models are end-of-life and will not be patched.

ShadowV2 IoT Botnet Exploits Multiple Device Flaws

⚠️ FortiGuard Labs observed a Mirai-derived botnet named ShadowV2 actively exploiting multiple known IoT firmware vulnerabilities to deliver a downloader and ELF payloads that enable remote takeover and DDoS operations. The activity, detected during a late‑October global AWS connectivity disruption, targeted a wide range of devices including D-Link, TP‑Link, DD‑WRT variants and DVR systems. ShadowV2 decodes a XOR-encoded configuration (key 0x22), contacts a hardcoded C2 (silverpath.shadowstresser.info / 81.88.18.108), and supports UDP, TCP and HTTP flood methods. Fortinet provides AV detections, IPS signatures for the exploited CVEs, and recommends firmware updates, network hardening, and continuous monitoring.

Fortinet, Chrome 0-days and Supply-Chain Attacks Recap

⚠️ This week’s recap spotlights multiple actively exploited vulnerabilities, supply‑chain compromises, and a record cloud DDoS that forced rapid vendor responses. Fortinet disclosed a FortiWeb OS command injection (CVE-2025-58034) that was observed chained with a recent critical fix, raising concerns about silent patching and disclosure timing. Google patched an actively exploited Chrome V8 0‑day (CVE-2025-13223), and attackers continued to abuse browser notifications, malicious updates, and SaaS integrations to phish and persist. The incidents underscore urgent priorities: patch quickly, scrutinize integrations, and strengthen monitoring and response.

US, UK, Australia Sanction Russian Bulletproof Hosts

🔒 The US, UK, and Australia have sanctioned Russian bulletproof hosting provider Media Land and related companies for supporting ransomware gangs such as LockBit, BlackSuit, and Play. Three executives were also designated and assets frozen, while clients and facilitators face secondary sanctions. Five Eyes agencies issued guidance for ISPs to detect and block BPH-enabled abuse.

CISA Guide: Mitigating Risks from Bulletproof Hosting

🛡️ CISA, with NSA, DoD CyCC, FBI and international partners, released Bulletproof Defense: Mitigating Risks from Bulletproof Hosting Providers to help ISPs and network defenders disrupt abuse by bulletproof hosting (BPH) providers. The guide defines BPH as providers who knowingly lease infrastructure to cybercriminals and outlines practical measures — including curated malicious resource lists, targeted filters, traffic analysis, ASN/IP logging, and intelligence sharing — to reduce malicious activity while minimizing disruption to legitimate users.

ShadowRay 2.0 Converts Exposed Ray Clusters to Miners

⚠ A global campaign named ShadowRay 2.0 is exploiting an unpatched code-execution flaw (CVE-2023-48022) in Ray clusters to deploy a self-propagating cryptomining botnet. Researchers at Oligo attribute the activity to an actor tracked as IronErn440, which uses AI-generated payloads submitted to Ray’s unauthenticated Jobs API. The malware deploys XMRig to mine Monero, establishes persistence via cron and systemd, and opens reverse shells for interactive control. Operators also throttle CPU use and conceal miners with deceptive names to evade detection.

Azure Mitigates Record 15.72 Tbps DDoS from IoT Botnet

🛡️ Microsoft Azure said it blocked a record 15.72 Tbps DDoS attack tied to the Aisuru IoT botnet that surged to roughly 3.64 billion packets per second and targeted a single cloud endpoint in Australia. The attacker launched extremely high-rate UDP floods from over 500,000 source IPs with minimal spoofing and random source ports. Azure DDoS Protection automatically detected and mitigated the traffic without disrupting customer workloads, and Microsoft urged organizations to validate internet-facing protections ahead of peak periods, noting systemic IoT security gaps.

Microsoft Mitigates 15.72 Tbps IoT-Driven DDoS Attack

🛡 Microsoft automatically detected and mitigated a massive DDoS attack that peaked at 15.72 Tbps and roughly 3.64 billion packets per second against a single Australian endpoint. The traffic was attributed to a TurboMirai-class IoT botnet called AISURU, sourced from hundreds of thousands of compromised routers, cameras, and DVRs and launched from over 500,000 source IPs across multiple regions. Attackers used high-rate UDP floods with minimal source spoofing and random source ports, factors Microsoft said helped simplify traceback and provider enforcement. The incident underscores rising DDoS baselines as broadband speeds increase and IoT devices become more capable.

RondoDox Exploits XWiki Flaw to Rapidly Expand Botnet

⚠️ RondoDox has been observed exploiting unpatched XWiki instances to weaponize a critical eval injection, CVE-2025-24893, enabling arbitrary remote code execution via the /bin/get/Main/SolrSearch endpoint. The flaw was patched in XWiki 15.10.11, 16.4.1 and 16.5.0RC1 in late February 2025, but scanning and exploitation surged in November, including botnet-driven DDoS and cryptocurrency miner deployments. Security vendors noted spikes in activity on November 7 and November 11 and observed RondoDox adding this vector on November 3, 2025. Administrators should apply vendor patches immediately and review logs and network traffic for indicators of compromise.

Cisco Firewall Zero-Days Now Triggering DoS Reboots

⚠️ Cisco warned that two recently patched firewall vulnerabilities (CVE-2025-20362 and CVE-2025-20333) — previously leveraged in zero-day intrusions — are now being abused to force ASA and FTD devices into unexpected reboot loops, causing denial-of-service. The vendor issued updates on September 25 and strongly urged customers to apply fixes immediately. CISA issued an emergency 24-hour directive for U.S. federal agencies and ordered EoS ASA devices to be disconnected. Shadowserver still reports tens of thousands of internet-exposed, unpatched devices.

Hacktivist DDoS Drives Majority of Public Sector Attacks

🛡️ ENISA's study of 586 public administration incidents found DDoS attacks made up roughly 60% of events, with 63% attributed to hacktivist groups. Central government incidents accounted for 69% of the total, while data breaches (17%) and ransomware (10%) caused disproportionate disruption. ENISA warns the sector's low maturity and recent inclusion in NIS2 increase risk and recommends CDNs/WAFs for DDoS mitigation, MFA/PAM/DLP for data protection, and EDR, segmentation and backups to combat ransomware.