Misbehaviour LossOfReliability

URI: LossOfReliability

Package: Users

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Description: The device, process or human is liable to make errors with an unacceptable frequency or extent. Caused by internal failings including lack of expertise, software bugs, etc., by using forged, corrupt or inaccurate information as input, or by a dependency on some other asset that is not reliable.

This misbehaviour affects the trustworthiness attribute Reliability

Host

A device that can store, process, transmit or receive data.

Process

Represents a process (usually implemented by software running on a Host) that can read, update or create data, or exchange data with other processes.

Human

An individual user role within the socio-technical system that uses and/or manages assets.

LossOfReliability
Hu.U.HuirPvDF.0

User Human affected by corrupt data Data from FlowsFrom received by Process: if the flow of data Data to Process is corrupt, and this is displayed to user Human, they may make decisions based on the incorrect information.
LossOfReliability
Hu.U.HuirPvDF.3

User Human affected by accessing forged Data from FlowsFrom via Process: user Human interacts via Process with data Data sent from FlowsFrom, so if the incoming data contains malicious alterations, then Human may make decisions based on false information.
LossOfReliability
Hu.U.HuirPvDS.0

User Human affected by corrupt data Data read by process Process: if a locally stored copy of Data is corrupt, and this is loaded by process Process and displayed to user Human, they may make decisions based on incorrect information.
LossOfReliability
Hu.U.HuirPvDS.3

User Human affected by forged data Data read by process Process: if a locally stored copy of Data contains malicious alterations designed to deceive, and this is loaded by process Process and displayed to user Human, they may make decisions based on false information.
LossOfReliability
Hu.U.HuirPv-iD.0

User Human affected by output Data from unreliable process Process: if process Process is unreliable, any output it provides for display to interactive user Human is likely to be incorrect and may affect the user.
LossOfReliability
P.U.HP-iDSDI.0

Corrupt input Data stored at Host affects Process: since process Process uses the locally stored copy of data Data on Host, if that copy becomes corrupt Process will become unreliable.
LossOfReliability
P.U.HP-iDSDI.3

Loss of reliability at process Process due to forged input Data: process Process uses the copy of Data stored on Host as input so if this is forged by an attacker, Process may become unreliable.
LossOfReliability
P.U.HuirPiD-DF-DS.0

User Human provides incorrect input Data affecting Process: user Human provides incorrect input Data, which is consumed (not saved or forwarded) by and affects Process.
LossOfReliability
P.U.P-iDFDI.0

Loss of reliability at process Process due to corrupt input Data from FlowsFrom: process Process uses the copy of Data sent by FlowsFrom as input so if this is corrupt, Process may become unreliable.
LossOfReliability
P.U.P-iDFDI.3

Loss of reliability at process Process due to forged input Data: process Process uses the copy of Data sent by FlowsFrom as input so if this is forged by an attacker, Process may become unreliable.
LossOfReliability
Co.U.Co.0

Loss of reliability due to unavailable controller Controller: if controller Controller is unable to run processes, the associated physical process will continue in an uncontrolled fashion, making it unreliable.
LossOfReliability
Co.U.CoPDS.0.1

Loss of control process reliability at Controller: if the onboard control input at a controller is faulty or corrupt, it means the controller will not be reliable.
LossOfReliability
Co.U.CoPDS.0.2

Loss of reliability due to out of date input at Controller: if the onboard data at a controller is out of date, it means the controller will not be reliable unless it does not require real-time updates to operate safely.

LossOfReliability
DF.I.HDBDRDF.0

Loss of reliability at DB corrupts outbound flow of data Data to FlowsTo: if there is a loss of reliability at process DB it may send corrupt output Data to FlowsTo. Normally, this is not considered likely when DB is acting only as a data relay, but DB is a DB process which processes incoming queries before requesting or forwarding data, so a loss of reliability may lead to the wrong data being retrieved or updated.
LossOfReliability
DF.I.HDBDSDF.0

Loss of reliability at DB corrupts outbound flow of data Data to FlowsTo: if there is a loss of reliability at process DB it may send corrupt output Data to FlowsTo. Normally, this is not considered likely when DB is serving stored data, but DB is a DB process, so it selects data by processes incoming queries, so a loss of reliability may lead to retrieval or update of the wrong data.
LossOfReliability
DF.I.HP-iDODF.0

Loss of reliability at Process corrupts outbound flow of data Data to FlowsTo: if there is a loss of reliability at process Process it may send corrupt output Data to FlowsTo.
LossOfReliability
DF.I.HuirPiDF.0

User Human interacting with Process provides incorrect input Data: user Human provides incorrect input Data to Process, due to having previously received corrupt data from the system.
LossOfReliability
DS.I.HP-iDS.0

Unreliable process Process corrupts locally stored copy of Data: if process Process is not reliable, it may accidentally corrupt a copy of Data stored on its host device Host, to which it has write access.
LossOfReliability
DS.I.HuirPiDS.0

User Human interacting with Process provides incorrect input Data: user Human provides incorrect input Data to Process, due to having previously received corrupt data from the system.
LossOfReliability
Hu.U.HuirPv-iD.0

User Human affected by output Data from unreliable process Process: if process Process is unreliable, any output it provides for display to interactive user Human is likely to be incorrect and may affect the user.
LossOfReliability
P.U.HuirPiD-DF-DS.0

User Human provides incorrect input Data affecting Process: user Human provides incorrect input Data, which is consumed (not saved or forwarded) by and affects Process.
LossOfReliability
P.U.HP.0

Unreliable host Host affects Process: if there is a loss of reliability at device Host, it causes a loss of reliability in process Process running on that device.

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