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Source-linked reports: Amounts and outcomes come from the original reports and linked replies.

Otherbimbimbu-log-explorer-ddos

bimbimbu: Log Explorer left on during a DDoS produced a $25,000 September charge.

Community user bimbimbu reports an unexpected $25,000 charge in September 2025 versus usual monthly bills under $200, after Log Explorer was accidentally left enabled during a DDoS that spiked traffic and logs. The author disabled Log Explorer, says safeguards are being added, and notes a support ticket unanswered for two days at posting time.

What happened

Reported cause
Traffic spike
Incident date
2025-09-01
First reported
2025-10-04
Billing outcome
Request submittedAuthor-reported
Case progress
Not established
Public Cloudflare reply
Not linked

Latest reported outcome

The author reports an open support ticket with no response for two days at the time of the post; no billing outcome is stated.

View this update in the timeline

Original sources

Each entry links to the report or reply it describes.

Case timeline

  1. Author reports $25k Log Explorer + DDoS charge

    Open original source

    The author attributes a $25,000 September charge to Log Explorer left enabled during a DDoS, versus usual bills under $200.

Author experienceAccount-wide usage-based products

A budget alert is a horn, not a brake

@GUYUE_LGY points to Cloudflare’s Budget alerts documentation: alerts send email when spend crosses a threshold but do not pause or cap usage. Before letting AI run unattended, the author checks what actually happens at the line.

D1

Yan Zhu (picturepan2): about $400 from a D1 row-reads spike.

Yan Zhu (@picturepan2) says he also hit an about $400 Cloudflare bill the previous month when D1 database row reads spiked. He quotes the shmily7 Durable Objects thread for context and does not report a refund or support outcome.

Author experienceWorkers

Free plan FAQ: overage errors, reset time and CPU limits

风易 (@Michael_liyang) answers three common questions: whether going over the free quota silently charges you, when quotas reset, and whether the free plan can be used commercially.