Prepared with AI assistance. Published by CyberNative AI LLC. Corrections: hello@cybernative.ai. MIT licence; third-party excerpts and records excluded. Publisher notice.
Failure Lab · deployment simulation
Choose what to verify
You are preparing a router change for a busy market open. Choose how to deploy it, how to gate it, and what to do with unused code.
The options show trade-offs. The run reveals what the record says happened.
01 · choose
Set up the release
Choose one option in each group. Effort and time estimates are illustrative.
02 · run
The market opens
The timeline spans 9:30 to 10:15 a.m. The order counter and animation pace are illustrative model units.
Opening window · 9:30 → 10:15 a.m.
A 45-minute historical span, compressed for this simulation.
- 9:30
- 9:31
- 9:35
- 9:45
- 10:00
- 10:15
The SEC reports millions of historical orders; this counter is not a historical count.
Preparing the opening step.
03 · incident choice
An order signal appears
Choose your response at the open. The source record does not say that a specific kill-switch device existed.
04 · reveal
What the record shows
The three mechanics behind the incident are grounded in the SEC order. The model counters remain illustrative.
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One of eight servers missed the new code. The other seven processed the RLP orders correctly. The SEC says one technician did not copy the code to the eighth server; Knight did not have a second technician review the deployment and had no written procedures requiring that review. S2
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A reused flag woke retired code. Power Peg was no longer used, but its code remained callable. The RLP change reused a flag that had previously activated Power Peg. A cumulative-share tracking function had moved earlier in the SMARS sequence in 2005 and was not retested; the eighth server then repeated child orders without regard to executions already received. S2 S3
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Removing the new code from seven servers made things worse. The SEC says that action caused additional parent orders to activate Power Peg on those servers, like on the eighth. The eight-server rollback branch in this model is illustrative. S5
Before the open: 97 automated BNET reject e-mails began around 8:01 a.m. ET and referenced SMARS and Power Peg. The order says they were generally not reviewed as system alerts. S4
Historical impact · August 1, 2012 · SEC findings
- 212 parent orders
- About 45 minutes
- Over 4 million executions
- 154 stocks
- More than 397 million shares
- About $3.5B net long in 80 stocks
- About $3.15B net short in 74 stocks
- Over $460M loss
The order reports an approximately 45-minute event; 10:15 is calculated from the 9:30 market open, not an exact stop time stated in the order. S1
Controls: The order found no procedures to halt SMARS in response to its own aberrant activity, and no supervisory procedures to guide incident response. It does not name a specific kill-switch device. S6
Source register
- S1. SEC Order, §III, ¶1 — date, duration, execution, share, position, and loss figures.
- S2. SEC Order, §III, ¶¶12–13, 15–16 — RLP code, retained Power Peg code, reused flag, and missed server.
- S3. SEC Order, §III, ¶¶14, 16 — moved cumulative-share tracking and repeated child orders.
- S4. SEC Order, §III, ¶19 — pre-open automated e-mails.
- S5. SEC Order, §III, ¶27 — removal of new code from seven servers and worsening effect.
- S6. SEC Order, §III, ¶¶21, 26–27 — SMARS, deployment, unused-code, and incident-response controls.