2021 Honeywell — malware intrusion disrupting limited IT systems; no confirmed customer exfiltration in public statement (Mar)
Data compromised
Potential enterprise operational data in impacted segments—customer databases not publicly tied to theft in initial Honeywell messaging
Technical writeup
Honeywell issued a March 23, 2021 corporate update acknowledging malware had impacted a limited number of enterprise IT systems, prompting containment steps and Microsoft-assisted investigation. Legal-trade summaries (e.g., Manufacturing Law Blog) echoed Honeywell language that primary customer-information repositories had not shown evidence of exfiltration at the time of disclosure while investigations continued. This BreachHistory row maps to `honeywell-international-india`, a regional directory slug, though the underlying disclosure is group-level.
Root cause
Malware intrusion on portions of corporate IT estate (strain undisclosed in first-party summary)