A0010: Safety Controller

A safety controller is an embedded ICS asset responsible for safety-critical functions, often using custom logic and redundant hardware to keep operating during component failure. Its business importance is that compromise, misconfiguration, or unauthorized change can affect the last line of automated protection for industrial operations. The ATT&CK relationship context shows this asset is relevant to behaviors such as program download/upload, I/O manipulation, alarm modification, denial of service, restart/shutdown, firmware update mode abuse, process-state monitoring, network discovery/sniffing, and removable media movement.

Executive priority

Treat safety controllers as high-priority cyber-physical risk assets, not ordinary controllers. Leaders should ask whether these devices are inventoried, change-controlled, segmented, monitored, and included in incident response and safety assurance processes. Budget and audit focus should prioritize evidence that only authorized engineering activity can modify safety logic, that unauthorized discovery or network access would be noticed, and that response plans account for scenarios where safety functions may be unavailable, altered, or placed into maintenance/update states.

Technical view

For SOC, OT engineering, and IR teams, the key validation question is whether you can distinguish approved safety-controller maintenance from unauthorized interaction. ATT&CK provides no official detection text for this asset, so coverage must be derived from local architecture and the related techniques targeting it. Validate monitoring around engineering workstations and vendor tools used for program upload/download, online edits, program append, controller tasking changes, firmware/update modes, restart/shutdown events, I/O and alarm setting changes, process state access, and unusual discovery or sniffing near safety networks. Because the asset platform is Embedded, host-level telemetry may be limited; network, engineering-station, controller audit, historian, and operator-console evidence often decide visibility.

Likely telemetry

Safety controller inventory, firmware/version, configuration, and logic baselines where available
Engineering workstation logs and vendor software activity for upload, download, online edit, append, and tasking changes
Controller event/audit logs for mode changes, restart/shutdown, firmware update mode, alarms, overrides, and configuration changes where supported
OT network traffic metadata and packet captures for controller communications, discovery, broadcast/multicast, port scanning, and possible adversary-in-the-middle conditions
Historian, OPC, HMI, alarm, and process-state records showing reads, writes, alarm changes, and abnormal I/O behavior

Detection direction

Build allowlists of expected engineering stations, protocols, maintenance windows, and accounts that may communicate with safety controllers.
Alert on program upload/download, online edit, program append, controller tasking changes, alarm setting changes, I/O overrides, restart/shutdown, or firmware/update mode activity outside approved change windows.
Correlate network discovery, port scans, broadcast or multicast discovery, and sniffing indicators with asset criticality; these may be early-stage behaviors before controller modification.
Compare controller logic/configuration and alarm settings against known-good baselines after maintenance, incidents, or unexplained process anomalies.
Tune false positives around legitimate commissioning, testing, vendor maintenance, and safety proof-test activities; require change-ticket correlation rather than treating all engineering activity as malicious.

Mitigation priorities

Maintain an authoritative inventory of safety controllers, their network locations, approved engineering paths, firmware/configuration state, and responsible process owners.
Enforce strict change management for safety logic, alarm settings, firmware/update modes, and controller tasking, with independent review for safety-critical changes.
Limit access to safety controllers to approved engineering workstations, accounts, and maintenance windows; separate safety-system access from general enterprise and control-network access where architecture permits.
Baseline and periodically verify controller programs, configurations, alarm settings, and I/O-related settings against approved versions.
Monitor and control removable media and third-party/contractor access for environments where safety controllers are isolated but physically reachable.

Additional notes and limits

This object is an ATT&CK for ICS asset, not a technique. The practical value comes from treating it as a critical target class and mapping the related techniques to defensive validation. The supplied relationships indicate a broad set of adversary behaviors that may target safety controllers, especially engineering changes, network discovery, process-state observation, I/O and alarm manipulation, device disruption, and removable media movement.

MITRE provides no official detection guidance for A0010, no tactics for the asset itself, and only the Embedded platform. This take does not assert active exploitation, specific vendor exposure, or guaranteed detection. Local safety architecture, controller capabilities, logging support, engineering workflows, and process hazard analysis are required to determine actual risk and coverage.

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Official MITRE ATT&CK definition

Safety Controller

Safety controllers are typically a type of field device used to perform the safety critical function. Safety controllers often support the deployment of custom programs/logic, similar to a PLC, but can also be tailored for sector specific functions/applications. The safety controllers typically utilize redundant hardware and processors to ensure they operate reliably if a component fails.

View the same entry on attack.mitre.org (MITRE-hosted reference; in-page links above use the Glexia ATT&CK library.)

Glexia analysis

How security teams should use this page

Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.

ATT&CK relationship table

Techniques used

This mirrors the MITRE pattern of making group, software, campaign, and technique relationships scannable. Relationship notes come from mirrored ATT&CK relationship text when available.

Filter related techniques60 rows

Domain	ID	Name	Relationship / procedure
ICS	T0846.003	Multicast DiscoverySub-technique	Multicast Discovery targets this object.
ICS	T1693.002	Module FirmwareSub-technique	Module Firmware targets this object.
ICS	T0859	Valid Accounts	Valid Accounts targets this object.
ICS	T0846.001	Port ScanSub-technique	Port Scan targets this object.
ICS	T0884	Connection Proxy	Connection Proxy targets this object.
ICS	T1691	Block Operational Technology Message	Block Operational Technology Message targets this object.
ICS	T0890	Exploitation for Privilege Escalation	Exploitation for Privilege Escalation targets this object.
ICS	T0834	Native API	Native API targets this object.
ICS	T0801	Monitor Process State	Monitor Process State targets this object.
ICS	T1694	Insecure Credentials	Insecure Credentials targets this object.
ICS	T1692.002	Reporting MessageSub-technique	Reporting Message targets this object.
ICS	T0871	Execution through API	Execution through API targets this object.
ICS	T0842	Network Sniffing	Network Sniffing targets this object.
ICS	T0877	I/O Image	I/O Image targets this object.
ICS	T0851	Rootkit	Rootkit targets this object.
ICS	T0809	Data Destruction	Data Destruction targets this object.
ICS	T0845	Program Upload	Program Upload targets this object.
ICS	T0821	Modify Controller Tasking	Modify Controller Tasking targets this object.
ICS	T1693.001	System FirmwareSub-technique	System Firmware targets this object.
ICS	T0866	Exploitation of Remote Services	Exploitation of Remote Services targets this object.
ICS	T0843.001	Download AllSub-technique	Download All targets this object.
ICS	T0874	Hooking	Hooking targets this object.
ICS	T0878	Alarm Suppression	Alarm Suppression targets this object.
ICS	T0830	Adversary-in-the-Middle	Adversary-in-the-Middle targets this object.
ICS	T0814	Denial of Service	Denial of Service targets this object.
ICS	T1692.001	Command MessageSub-technique	Command Message targets this object.
ICS	T1695.002	EthernetSub-technique	Ethernet targets this object.
ICS	T0835	Manipulate I/O Image	Manipulate I/O Image targets this object.
ICS	T0843.002	Online EditSub-technique	Online Edit targets this object.
ICS	T0843.003	Program AppendSub-technique	Program Append targets this object.
ICS	T0868	Detect Operating Mode	Detect Operating Mode targets this object.
ICS	T0820	Exploitation for Evasion	Exploitation for Evasion targets this object.
ICS	T1694.001	Default CredentialsSub-technique	Default Credentials targets this object.
ICS	T0889	Modify Program	Modify Program targets this object.
ICS	T0840	Network Connection Enumeration	Network Connection Enumeration targets this object.
ICS	T0885	Commonly Used Port	Commonly Used Port targets this object.
ICS	T0843	Program Download	Program Download targets this object.
ICS	T0800	Activate Firmware Update Mode	Activate Firmware Update Mode targets this object.
ICS	T0869	Standard Application Layer Protocol	Standard Application Layer Protocol targets this object.
ICS	T0846	Remote System Discovery	Remote System Discovery targets this object.
ICS	T1693	Modify Firmware	Modify Firmware targets this object.
ICS	T1691.001	Command MessageSub-technique	Command Message targets this object.
ICS	T0861	Point & Tag Identification	Point & Tag Identification targets this object.
ICS	T1692	Unauthorized Message	Unauthorized Message targets this object.
ICS	T0892	Change Credential	Change Credential targets this object.
ICS	T1691.002	Reporting MessageSub-technique	Reporting Message targets this object.
ICS	T1695	Block Communications	Block Communications targets this object.
ICS	T0846.002	Broadcast DiscoverySub-technique	Broadcast Discovery targets this object.
ICS	T0881	Service Stop	Service Stop targets this object.
ICS	T0872	Indicator Removal on Host	Indicator Removal on Host targets this object.
ICS	T0838	Modify Alarm Settings	Modify Alarm Settings targets this object.
ICS	T0862	Supply Chain Compromise	Supply Chain Compromise targets this object.
ICS	T0847	Replication Through Removable Media	Replication Through Removable Media targets this object.
ICS	T0888	Remote System Information Discovery	Remote System Information Discovery targets this object.
ICS	T1695.003	Wi-FiSub-technique	Wi-Fi targets this object.
ICS	T0858	Change Operating Mode	Change Operating Mode targets this object.
ICS	T0806	Brute Force I/O	Brute Force I/O targets this object.
ICS	T0816	Device Restart/Shutdown	Device Restart/Shutdown targets this object.
ICS	T0848	Rogue Master	Rogue Master targets this object.
ICS	T1695.001	Serial COMSub-technique	Serial COM targets this object.

Relationship explorer

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Change history

Object version and sync metadata

The fields below describe the current mirrored snapshot. When Glexia retains multiple ATT&CK source imports, you can open the table to compare the same object across releases (hashes and MITRE timestamps). For MITRE’s own release notes and roadmap, see ATT&CK resources — Updates.

ATT&CK release: 19.1
Object version: 1.1
Created: Sep 28, 2023, 15:10 UTC (UTC+00:00)
Modified: May 12, 2026, 15:12 UTC (UTC+00:00)
Raw hash: daf468fa75f8e253...

Imported snapshots across ATT&CK releases(1)

Release	Bundle imported	Object version	Modified	Status	Raw hash
19.1	Jul 14, 2026, 09:14 UTC (UTC+00:00)	1.1	May 12, 2026, 15:12 UTC (UTC+00:00)	Current bundle	`daf468fa75f8…`

Raw source

Mirrored ATT&CK source object

The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.

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Source references

External references and citations

MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.

[1]
Guidance - NIST SP800-82
Keith Stouffer. (2015, May). Guide to Industrial Control Systems (ICS) Security. Retrieved March 28, 2018.
Open source URL
[2]
SIGTTO ESD 2021
Society of International Gas Tanker & Terminal Operators Ltd. (2021). ESD Systems: Recommendations for Emergency Shutdown and Related Safety Systems (Second Edition). Retrieved September 28, 2023.
Open source URL
[3]
mitre-attackA0010
Open source URL

Source and licensing

Source: MITRE ATT&CK®. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation. Glexia is not affiliated with or endorsed by MITRE.

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