"Website under heavy load" warning

What to do

• Check whether you use Coveralls Coveralls.io Web, Coveralls.io API. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 2h 8m it lasted.

  Anything that failed between 2026-08-11 19:02 UTC and 2026-08-11 21:09 UTC may need a replay.

• Subscribe to Coveralls's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=coveralls works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Coveralls 3

1. investigatingAug 11, 2026, 7:02 PM UTC

   We are currently experiencing occasional "Website under heavy load" warnings. We believe this is the second wave of an attack we experienced this weekend involving an army of scraper bots which we successfully mitigated. We believe the attacker may have gotten around an initial phase of defense. Separate from a DDoS attack, these are millions of individual requests coming from over 280K different IP addresses across 12 different countries, so our standard DDoS protection (IP quarantine) does not apply. We are implementing a second phase of defense and will report updates here.

   provider

2. monitoringAug 11, 2026, 7:55 PM UTC

   This was the second wave of the attack we experienced this weekend, broadened and tripled in volume. We implemented a second phase of defense which appear to be working and will continue monitoring for the next hour.

   provider

3. resolvedAug 11, 2026, 9:09 PM UTC

   This incident has been resolved.

   provider

Corrections

None so far.

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