I 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 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.
https://blog.cloudflare.com/ddos-threat-report-for-2025-q1/#hyper-volumetric-attacks-continue-spill-into-q2
BrianKrebs /
npub1rf…5t9xk
2025-05-17 02:55:32
Author Public Key
npub1rfdvtvmesnz7x7s3hjg5q2dgrup9xfh209gvj36angljrfy5edtq25t9xkSeen on
wss://relay.mostr.pubPublished at
2025-05-17 02:55:32Event JSON
{
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"pubkey": "1a5ac5b37984c5e37a11bc914029a81f025326ea7950c9475d9a3f21a494cb56",
"created_at": 1747450532,
"kind": 1,
"tags": [
[
"proxy",
"https://infosec.exchange/users/briankrebs/statuses/114520918090658346",
"activitypub"
],
[
"client",
"Mostr",
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"wss://relay.mostr.pub"
]
],
"content": "I 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 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. \n\nIt'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. \n\nI'll know more in a bit. Below is the CF blog about their April attack. \n\nhttps://blog.cloudflare.com/ddos-threat-report-for-2025-q1/#hyper-volumetric-attacks-continue-spill-into-q2",
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}