{"id":34359,"date":"2025-11-17T03:42:57","date_gmt":"2025-11-17T03:42:57","guid":{"rendered":"https:\/\/nsfocusglobal.com\/?p=32767"},"modified":"2026-04-17T18:07:35","modified_gmt":"2026-04-17T18:07:35","slug":"nsfocus-cloud-ddos-protection-service-cloud-dps-detected-and-mitigated-an-800g-ddos-attack-towards-a-critical-infrastructure-operator","status":"publish","type":"post","link":"https:\/\/nsfocusglobal.com\/pt-br\/nsfocus-cloud-ddos-protection-service-cloud-dps-detected-and-mitigated-an-800g-ddos-attack-towards-a-critical-infrastructure-operator\/","title":{"rendered":"NSFOCUS Cloud DDoS Protection Service (Cloud DPS) Detected and Mitigated an 800G+ DDoS Attack towards a Critical Infrastructure Operator"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><h2 class=\"wp-block-heading\">Incident Summary<\/h2>\n\n\n\n<p>On October 21, 2025, NSFOCUS Cloud DDoS Protection Service (Cloud DPS) detected and mitigated an 800G+ DDoS attack towards a critical infrastructure operator.<\/p>\n\n\n\n<p>The target network sustained a multi-vector volumetric DDoS attack peaking at <strong>843.4 Gbps<\/strong> and <strong>73.6 Mpps<\/strong>. The assault combined <strong>UDP-based floods (dominant)<\/strong> with amplification and reflection techniques.<\/p>\n\n\n\n<p><strong>NSFOCUS Cloud DPS<\/strong> and <strong>Managed Security Service<\/strong> (MSS) team successfully activated real-time mitigation and <strong>dropped over 99.9% of malicious traffic<\/strong>. The clean traffic during the whole incident remains below 700 Mbps.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/DDoS-attack-peaking-at-843.4-Gbps.png\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"266\" src=\"https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/DDoS-attack-peaking-at-843.4-Gbps-1024x266.png\" alt=\"Red circular no entry sign with a white horizontal bar.\" class=\"wp-image-32768\" srcset=\"https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/DDoS-attack-peaking-at-843.4-Gbps-1024x266.png 1024w, https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/DDoS-attack-peaking-at-843.4-Gbps-300x78.png 300w, https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/DDoS-attack-peaking-at-843.4-Gbps-768x200.png 768w, https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/DDoS-attack-peaking-at-843.4-Gbps-600x156.png 600w, https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/DDoS-attack-peaking-at-843.4-Gbps-150x39.png 150w, https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/DDoS-attack-peaking-at-843.4-Gbps.png 1270w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p class=\"has-text-align-center\">Fig. 1 DDoS attack peaking at 843.4 Gbps<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/DDoS-attack-peaking-at-73.6-Mbps.png\"><img decoding=\"async\" src=\"https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/DDoS-attack-peaking-at-73.6-Mbps-1024x264.png\" alt=\"Red circular no entry sign with a white horizontal bar.\" class=\"wp-image-32770\"><\/a><\/figure>\n<\/div>\n\n\n<p class=\"has-text-align-center\">Fig. 2 DDoS attack peaking at 73.6 Mpps<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Attack Overview<\/h2>\n\n\n\n<p><strong>1. Attack Type Distribution (Top 3 Vectors)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th><strong>Rank<\/strong><\/th><th><strong>Attack Type<\/strong><\/th><th><strong>Volume<\/strong><\/th><th><strong>% of Total<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>1<\/strong><\/td><td>UDP Flood<\/td><td>~609G<\/td><td>70.7%<\/td><\/tr><tr><td><strong>2<\/strong><\/td><td>Manual Strategy<\/td><td>~30G<\/td><td>3.6%<\/td><\/tr><tr><td><strong>3<\/strong><\/td><td>Carpet Bombing Attack<\/td><td>~2.9G<\/td><td>0.34%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/Attack-Type-Distribution.png\"><img decoding=\"async\" src=\"https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/Attack-Type-Distribution-1024x855.png\" alt=\"Red circular no entry sign with a white horizontal bar.\" class=\"wp-image-32772\" width=\"768\" height=\"641\" srcset=\"https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/Attack-Type-Distribution-1024x855.png 1024w, https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/Attack-Type-Distribution-300x250.png 300w, https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/Attack-Type-Distribution-768x641.png 768w, https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/Attack-Type-Distribution-600x501.png 600w, https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/Attack-Type-Distribution-150x125.png 150w, https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/Attack-Type-Distribution.png 1263w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p class=\"has-text-align-center\">Fig. 3 Attack Type Distribution<\/p>\n\n\n\n<p><strong>Key Insight 1:<\/strong> <strong>UDP Flood<\/strong> is very likely to reach high volume, which requires mitigation service provider to have dedicated bandwidth and sufficient mitigation gear to absorb the DDoS traffic.<\/p>\n\n\n\n<p><strong>2. Traffic Trend (bps) &acirc;&euro;&ldquo; Peak Mitigation<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th><strong>Metric<\/strong><\/th><th><strong>Value<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Inbound Traffic Peak<\/strong><\/td><td><strong>843.4 Gbps<\/strong><\/td><\/tr><tr><td><strong>Attack Traffic Peak (Dropped)<\/strong><\/td><td><strong>842.8 Gbps<\/strong><\/td><\/tr><tr><td><strong>Passed Traffic Peak<\/strong><\/td><td><strong>710.9 Mbps<\/strong> (0.08% of inbound)<\/td><\/tr><tr><td><strong>Dropped Ratio<\/strong><\/td><td><strong>99.92%<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Key Insight 2:<\/strong> Managed Security Service (MSS) with mitigation effect SLA can be valuable, an experienced, responsive MSS team can do real-time policy tuning to maintain clean traffic at very low level (&lt;0.08%), which is critical to keep the service alive.<\/p>\n\n\n\n<p><strong>3. Attack Timeline<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th><strong>Time<\/strong><\/th><th><strong>Event<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>12:00<\/strong><\/td><td>Baseline traffic normal (~100 Mbps)<\/td><\/tr><tr><td><strong>12:05<\/strong><\/td><td>First spike detected &acirc;&euro;&ldquo; UDP Flood initiation<\/td><\/tr><tr><td><strong>12:15<\/strong><\/td><td>Traffic ramped to 600+ Gbps<\/td><\/tr><tr><td><strong>13:00<\/strong><\/td><td><strong>Peak: 843.4 Gbps \/ 73.6 Mpps<\/strong><\/td><\/tr><tr><td><strong>14:00<\/strong><\/td><td>Attack intensity declined<\/td><\/tr><tr><td><strong>14:16<\/strong><\/td><td>Traffic returned to baseline<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Key Insight 3:<\/strong> Attackers now have adequate resources to peak the traffic in short time and capable of maintaining a peak traffic level of 600G-800G for 30 minutes or more. Modern mitigation service has to support always-on to ensure the minimum Time-to-Mitigate, while traditional service may take 30 mins just to initiate the mitigation.<\/p>\n\n\n\n<p><strong>4. Attack Source IP Geo Distribution<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/Attack-Source-IP-Geo-Distribution.png\"><img decoding=\"async\" src=\"https:\/\/nsfocusglobal.com\/wp-content\/uploads\/2025\/11\/Attack-Source-IP-Geo-Distribution-1024x580.png\" alt=\"Red circular no entry sign with a white horizontal bar.\" class=\"wp-image-32774\" width=\"768\" height=\"435\"><\/a><\/figure>\n<\/div>\n\n\n<p class=\"has-text-align-center\">Fig. 4 Attack Source IP Geo Distribution<\/p>\n\n\n\n<p>The US, Singapore and China were top 3 source countries while the Netherlands and Romania also composed a significant part due to their rich datacenter resources.<\/p>\n\n\n\n<p><strong>Key Insight 4:<\/strong> Mitigation service providers need to cover geographical hotspots include US, China, APAC and Europe. In-depth Threat Intelligence including botnet, command &amp; control, IP gang from above regions is appreciated to bring optimum mitigation effect.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion &amp; Recommendations<\/h2>\n\n\n\n<p><strong>NSFOCUS Cloud DPS<\/strong> demonstrated <strong>carrier-grade resilience<\/strong> against a <strong>terabit-scale, multi-vector DDoS assault<\/strong>. <\/p>\n\n\n\n<p>Key strengths:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sub-second <\/strong>detection and mitigation<\/li>\n\n\n\n<li><strong>AI-driven <\/strong>proactive baseline learning<\/li>\n\n\n\n<li><strong>Near-perfect mitigation accuracy<\/strong> (99.92% drop)<\/li>\n\n\n\n<li><strong>Global scrubbing capacity <\/strong>covering hotspots<\/li>\n\n\n\n<li><strong>Rich rule engine<\/strong> handling multiple concurrent vectors<\/li>\n<\/ul>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p>Incident Summary On October 21, 2025, NSFOCUS Cloud DDoS Protection Service (Cloud DPS) detected and mitigated an 800G+ DDoS attack towards a critical infrastructure operator. The target network sustained a multi-vector volumetric DDoS attack peaking at 843.4 Gbps and 73.6 Mpps. The assault combined UDP-based floods (dominant) with amplification and reflection techniques. NSFOCUS Cloud DPS [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":26981,"comment_status":"open","ping_status":"open","sticky":false,"template":"post-templates\/single-layout-8.php","format":"standard","meta":{"_acf_changed":false,"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","footnotes":""},"categories":[3,5],"tags":[135,375,376,377,536,1050],"class_list":["post-34359","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-ddos-mitigation","tag-cloud-dps","tag-ddos-attacks","tag-ddos-defense","tag-ddos-protection","tag-mss","tag-udp-flood"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NSFOCUS Cloud DDoS Protection Service (Cloud DPS) Detected and Mitigated an 800G+ DDoS Attack towards a Critical Infrastructure Operator - NSFOCUS<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NSFOCUS Cloud DDoS Protection Service (Cloud DPS) Detected and Mitigated an 800G+ DDoS Attack towards a Critical Infrastructure Operator - 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