BrianKrebsI am reliably informed by Google Shield that my site krebsonsecurity.com on Monday was the target of the biggest DDoS attack Google has ever had to deal with, clocking in at ~6.3 Tbps. This is not quite a record; apparently, an attack Cloudflare had to deal with in April is the largest known DDoS to date -- at ~6.5 Tbps.
It's been a while since we've seen a big DDoS. For reference, this one was about 10x the size of the Mirai botnet attack that launched a record DDoS against my site in 2016, knocking it offline for nearly 4 days until I got the site behind Google Sheild.
I'll know more in a bit. Below is the CF blog about their April attack.
Targeted by 20.5 million DDoS attacks, up 358% year-over-year: Cloudflare’s 2025 Q1 DDoS Threat Report
DDoS attacks are surging. In 2025 Q1, Cloudflare blocked +20M attacks (a 358% YoY spike) along with 5.6 Tbps and 4.8 Bpps record-breaking attacks. And that's just the beginning. Read more in our latest DDoS Threat Report.
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