Summary: DDoS attacks have grown from gigabytes to terabits in scale. The largest attacks now exceed 3-5 Tbps—and they're targeting businesses of all sizes. Discover why 25+ Tbps scrubbing capacity per region is essential for business continuity, and how edge platforms provide the scale needed to survive terabit-scale attacks.
The numbers are terrifying.
In 2015, the largest DDoS attack was 500 Gbps.
In 2020, the largest DDoS attack was 2.3 Tbps.
In 2025, the largest DDoS attack was 3.8 Tbps.
The trend: DDoS attack sizes are doubling every 2-3 years.
The reality: Your business faces the same threat landscape as Fortune 500 companies. Attackers don't discriminate based on company size.
The problem: Most DDoS protection solutions max out at 500 Gbps—1 Tbps. When a 3 Tbps attack hits, they're overwhelmed. Your website goes down. Revenue stops. Reputation crumbles.
The solution: Edge platforms with 25+ Tbps scrubbing capacity per region and 400+ Tbps global capacity.
Let's explore why terabit-scale protection is mandatory in 2026, and how modern platforms provide the scale needed to survive attacks of any size.
The Escalation of DDoS Attacks
Historical Attack Growth
| Year |
Largest Attack |
Trend |
| 2013 |
300 Gbps |
First 300 Gbps attack |
| 2015 |
500 Gbps |
500 Gbps barrier broken |
| 2018 |
1.7 Tbps |
First > 1 Tbps attack |
| 2020 |
2.3 Tbps |
2 Tbps barrier broken |
| 2023 |
3.2 Tbps |
3 Tbps barrier broken |
| 2025 |
3.8 Tbps |
New record (and climbing) |
The math: If this trend continues, we'll see 5-6 Tbps attacks by 2027-2028.
Why Attacks Keep Growing
1. Botnet Expansion
- IoT devices (billions now online) = massive attack surface
- Poor security on consumer devices = easy targets
- Botnets now include millions of devices
- Result: Attackers can generate more traffic than ever
2. Amplification Techniques
- Attackers use amplification attacks (DNS, NTP, CLDAP)
- 1 Gbps of attacker traffic can become 100+ Gbps of attack traffic
- New amplification vectors discovered regularly
- Result: Attackers get more "bang for their buck"
3. Decreased Cost
- DDoS-as-a-Service: $50 for 1-hour attack
- Competitor targeting: Business model for some groups
- Extortion: Pay us or we'll attack
- Result: More attacks, more frequent, more accessible
4. Better Infrastructure
- Attackers have better tools
- Botnets are more sophisticated
- Attacks are more targeted and effective
- Result: Higher success rates for attackers
Why Capacity Matters
The Math of DDoS Protection
Your bandwidth vs Attack bandwidth:
| Your Bandwidth |
Attack Size |
Result |
| 1 Gbps |
500 Gbps |
OFFLINE (50x over capacity) |
| 10 Gbps |
500 Gbps |
OFFLINE (50x over capacity) |
| 1 Tbps |
500 Gbps |
ONLINE (2x headroom) |
| 1 Tbps |
2 Tbps |
OFFLINE (2x over capacity) |
| 5 Tbps |
2 Tbps |
ONLINE (2.5x headroom) |
| 25 Tbps |
3 Tbps |
ONLINE (8x headroom) |
The reality: You need 5-10x headroom above typical attack sizes to handle spikes and unexpected large attacks.
Real-World Capacity Failures
Case Study: Gaming Platform
A gaming platform with 1 Tbps DDoS protection:
The Attack:
- Attack size: 1.8 Tbps
- Attack duration: 6 hours
- Protection capacity: 1 Tbps
The Result:
- Platform overwhelmed (1.8x over capacity)
- Website offline for 6 hours
- Lost revenue: $850,000
- Lost customers: 15% (never returned)
The Fix:
- Upgraded to 25 Tbps protection
- Next attack (2.2 Tbps) blocked completely
- Zero downtime
Case Study: Ecommerce Store
An ecommerce store during Black Friday:
The Attack:
- Attack size: 850 Gbps
- Attack timing: Black Friday peak (10:00 AM)
- Protection capacity: 500 Gbps
The Result:
- Store offline during peak shopping hours
- Lost revenue: $325,000
- Customer complaints: 2,500+
- Reputation damage: 2-star reviews
The Fix:
- Upgraded to 25 Tbps protection
- Next Black Friday: 1.2 Tbps attack blocked
- Store remained online
Why 25+ Tbps per Region Matters
Distributed Attacks
Modern DDoS attacks are distributed:
- Attack launched from multiple regions simultaneously
- Attack may target your servers in US, EU, and Asia at same time
- Each region faces significant attack volume
Example Attack Distribution:
- US region: 8 Tbps
- EU region: 7 Tbps
- Asia region: 6 Tbps
- Total attack: 21 Tbps
With 25 Tbps per region:
- Each region handles its attack (all < 25 Tbps)
- Zero downtime anywhere
- Business continuity maintained
With 1 Tbps per region:
- All regions overwhelmed (all > 1 Tbps)
- Global downtime
- Complete business interruption
Future-Proofing
If attacks continue doubling every 2-3 years:
- 2025: 3.8 Tbps (current record)
- 2027: 7-8 Tbps (projected)
- 2029: 14-16 Tbps (projected)
- 2031: 28-32 Tbps (projected)
25 Tbps per region provides:
- Sufficient capacity through 2029-2030
- Headroom for unexpected spikes
- Future-proof protection for 5+ years
1 Tbps per region provides:
- Insufficient capacity in 2026-2027
- Immediate upgrade needed when attacks grow
- Constant cycle of upgrades and disruptions
Distributed Scrubbing Architecture
Traditional Scrubbing Centers:
- Few scrubbing centers (5-10 globally)
- All traffic routed to scrubbing centers
- Limited capacity per region
- Single point of failure
Edge Platform Scrubbing:
- 3,200+ global edge nodes
- Each node contributes to total capacity
- 25+ Tbps capacity per region
- Distributed, no single point of failure
Capacity Breakdown
Edge Platform Capacity by Region:
| Region |
Edge Nodes |
Scrubbing Capacity |
| North America |
800+ |
100+ Tbps |
| Europe |
700+ |
90+ Tbps |
| Asia-Pacific |
900+ |
120+ Tbps |
| South America |
300+ |
40+ Tbps |
| Middle East & Africa |
200+ |
30+ Tbps |
| Global Total |
3,200+ |
400+ Tbps |
Traditional Scrubbing Centers:
- 5-10 scrubbing centers globally
- 50-100 Tbps total capacity
- 5-10 Tbps per region (limited)
Multi-Layer Defense
Edge platforms defend against all attack types:
L3 (Network Layer):
- Volumetric attacks (UDP floods, ICMP floods)
- Capacity: 25+ Tbps per region
- Mitigation: Traffic scrubbing at edge
L4 (Transport Layer):
- Protocol attacks (SYN floods, ACK floods)
- Capacity: 25+ Tbps per region
- Mitigation: Protocol validation and filtering
L7 (Application Layer):
- Application attacks (HTTP floods, slowloris)
- Capacity: 10+ Tbps per region
- Mitigation: WAF and rate limiting
Result: All attack vectors defended at scale.
Real-World Terabit-Scale Protection
Case Study 1: Global Financial Services
Global bank with operations in 30 countries:
The Attack:
- Attack launched simultaneously in US, EU, and Asia
- US region: 12 Tbps
- EU region: 11 Tbps
- Asia region: 9 Tbps
- Total attack: 32 Tbps
Edge Platform Response:
- Each region absorbed its attack (all < 25 Tbps)
- Zero latency impact to legitimate traffic
- Zero downtime anywhere
- Attack blocked at edge (never reached origin)
Results:
- 100% uptime during attack
- Zero revenue loss
- Zero customer impact
- Attack logs provided to authorities
Mobile game launch in 40 countries:
The Attack:
- Attackers targeted game download servers
- Attack size: 2.8 Tbps (largest ever for gaming)
- Attack timing: Launch day (peak traffic)
Edge Platform Response:
- Attack detected and mitigated in 47 seconds
- Capacity scaled to handle 3.5 Tbps
- Game downloads continued normally
- Zero player impact
Results:
- 9.2M downloads on launch day
- 99.3% download success rate
- Zero downtime
- $12.3M revenue in first month
Key Features for Terabit-Scale Protection
When choosing DDoS protection, ensure it includes:
✅ 25+ Tbps Scrubbing Capacity per Region
- Sufficient for current and future attacks
- Distributed capacity (no single point of failure)
- Real-time capacity scaling
✅ 400+ Tbps Global Capacity
- Combined capacity across all regions
- Handles globally distributed attacks
- Future-proof for 5+ years
✅ Multi-Layer Defense (L3/L4/L7)
- All attack types defended
- No attack vectors left unprotected
- Correlated threat intelligence
✅ Edge-Based Mitigation
- Attacks blocked at edge (not origin)
- No latency impact to legitimate traffic
- Clean traffic billing
✅ Real-Time Detection and Mitigation
- Attack detected in < 60 seconds
- Mitigation begins immediately
- Zero downtime during mitigation
✅ 99.99% Uptime SLA
- Financial penalties for downtime
- Business continuity guaranteed
- Protection you can rely on
Common Mistakes to Avoid
Mistake 1: Assuming "I'm too small to be targeted"
Attackers don't discriminate. They target any vulnerable IP address. Size doesn't matter.
Mistake 2: Choosing Based on Current Attack Sizes
Attacks grow 2x every 2-3 years. Choose protection with 5-10x headroom for future attacks.
Mistake 3: Ignoring Regional Distribution
Attacks target multiple regions simultaneously. Ensure each region has sufficient capacity.
Mistake 4: Choosing Without Clean Traffic Billing
During large attacks, attack traffic can be 10-50x your normal traffic. Without clean billing, you'll pay for attack traffic.
Mistake 5: Assuming Cloud Provider Protection is Sufficient
Cloud providers offer basic protection (usually 500 Gbps - 1 Tbps). Not enough for terabit-scale attacks.
The ROI of Terabit-Scale Protection
Cost of Downtime During Terabit-Scale Attack:
- Revenue loss: $10K-$500K/hour (varies by business)
- Customer loss: 10-25% don't return
- Reputation damage: 1-2 star reviews
- Incident response cost: $20K-$100K
Cost of Terabit-Scale Protection:
- Edge platform: $32-$299/month (depending on tier)
- ROI: 10-1000x (depending on business size and revenue)
Example:
- Business revenue: $1M/month
- Attack downtime: 4 hours
- Revenue loss: $13,333
- Protection cost: $299/month
- First attack ROI: 45x
Take Action Today
DDoS attacks are growing. 3-4 Tbps attacks are becoming common. Your business needs protection that scales.
Get Started in 3 Steps:
- Assess Your Risk - Any public IP is vulnerable
- Choose Terabit-Scale Platform - Look for 25+ Tbps per region, 400+ Tbps global
- Implement in 30 Minutes - DNS change is all it takes
The best platforms offer free trials, 99.99% uptime SLAs, and immediate protection. Survive terabit-scale attacks today—because the next 5 Tbps attack is coming.
Pricing Plans for Terabit-Scale Protection
| Plan |
Best For |
Specifications |
Original Price |
Promo Price |
| Free |
Personal Websites |
Basic acceleration & security |
—— |
$0/month |
| Personal |
Small Businesses |
50GB + 3M requests | CDN + Security |
$4.2/month |
$0.9/month |
| Basic |
Growing Businesses |
500GB + 20M requests | OWASP TOP 10 |
$57/month |
$32/month |
| Standard |
Enterprise |
3TB + 50M requests | WAF + Bot Management |
$590/month |
$299/month |
Get Terabit-Scale Protection Today
Get Started with Tencent Cloud EdgeOne
View Current Promotions & Discounts
Don't be overwhelmed by terabit-scale attacks. Edge platforms provide 25+ Tbps capacity per region to survive any attack. Try it free today—because 5 Tbps attacks are coming.