---
schema_version: "secwatch.filing_event.v1"
accession: "0001174947-26-000761"
form_type: "8-K"
ticker: "IEHC"
cik: "0000050292"
company_name: "IEH Corp"
filed_at: "2026-08-06T17:14:23+00:00"
generated_at: "2026-08-06T17:15:08.090106+00:00"
event_type: "cyber"
sentiment: "negative"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# IEH Corporation reports cybersecurity incident involving unauthorized access to employee Microsoft 365 mailbox

## Summary
- On August 4, 2026, IEH discovered a phishing attack that gave a threat actor unauthorized access to an employee's Microsoft 365 mailbox.
- Accessed data includes email messages, attachments, customer communications, purchase orders, and potentially export-controlled technical information.
- No evidence of data exfiltration yet; account secured and corrective actions taken.
- Company believes the incident will not have a material adverse effect on business operations.

## SEC filing metadata
- accession: 0001174947-26-000761
- form_type: 8-K
- ticker: IEHC
- cik: 0000050292
- company_name: IEH Corp
- filed_at: 2026-08-06T17:14:23+00:00
- event_type: cyber
- sentiment: negative
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/50292/000117494726000761/0001174947-26-000761-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/50292/000117494726000761/form8k-36187_iehc.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001174947-26-000761
- JSON: https://secwatch.observer/filing/0001174947-26-000761.json
- Plain text: https://secwatch.observer/filing/0001174947-26-000761.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.