Using attack data from F5 Silverline, F5 Labs has just posted it's annual review of DDoS attacks for 2021.
Go read the article now for a full breakdown on how attack frequency, size, methods and targets have changed over the past year, and if you're new to cyber security then now is a good time to go learn the basics of a DDoS attack.
DDoS Attacks By The Numbers
- Silverline mitigated its largest-ever DDoS attack, which peaked at just under 1.4 Tbps, almost 5.5 times larger than the largest attack in 2020.
- The overall number of DDoS attacks declined 3% between 2020 and 2021.
- Small to medium-size DDoS attacks (up to 250 Gbps) declined by 5%.
- DDoS attacks larger than 250 Gbps grew by 1,300%.
- Finance, the target of over 25% of all attacks, became the most attacked sector in 2021.
- Volumetric (network flood) DDoS attacks are still the most prevalent, accounting for 59% of all attacks.
- Protocol and application DDoS attacks both grew in 2021 by 2% and 5%, respectively.
- TCP DDoS attacks almost doubled in 2021 compared with 2020 and accounted for 27% of all attacks.
This was just a brief summary of the main findings from the report and if anyone has any questions about the data, analysis or attack methods in general, please post a question here and I'd be delighted to answer!