Protecting sensitive information in time travel trace debugging

A computer system, comprising:

• one or more processors;
• and
• one or more computer-readable media having stored thereon computer-executable instructions that, when executed by the one or more processors, cause the computer system to perform at least the following:
• process a replayable a trace of execution of an entity, including processing trace data that represents execution of a plurality of executable instructions of the entity;
• based on processing the replayable trace, identify that original information, which was accessed based on execution of one or more first executable instructions of the entity, comprises sensitive information;
• identify derived information of the original information, the identifying being based on identifying execution of one or more second executable instructions of the entity that operate on the original information to create the derived information;
• based on the derived information being derived from the original information, determine that the derived information also comprises sensitive information;
• and
• based on the original information comprising the sensitive information, perform one or more of:
• storing, into the trace, first trace data comprising alternative information, rather than the derived information, into a first trace data stream, while ensuring that an execution path that was taken by the entity based on the derived information will also be taken during replay of the execution of the entity using the first trace data stream;
• or
• storing, into the trace, second trace data into a second trace data stream that causes one or more alternative executable instructions, rather than the one or more second executable instructions of the entity, to be executed during the replay of the execution of the entity using the second trace data stream.

A computer program product comprising one or more physical hardware storage devices having stored thereon computer-executable instructions that, when executed at a processor, cause a computer system to perform at least the following:

• replay a replayable a trace of execution of an entity, including replaying trace data that represents execution of a plurality of executable instructions of the entity;
• based on replaying the replayable trace, identify that original information, which was accessed based on execution of one or more first executable instructions of the entity, comprises sensitive information;
• identify derived information of the original information, the identifying being based on identifying execution of one or more second executable instructions of the entity that operate on the original information to create the derived information;
• based on the derived information being derived from the original information, determine that the derived information also comprises sensitive information;
• and
• based on the original information comprising the sensitive information, perform one or more of:
• storing, into the trace, first trace data comprising alternative information, rather than the derived information, into a first trace data stream, while ensuring that an execution path that was taken by the entity based on the derived information will also be taken during subsequent replay of the execution of the entity using the first trace data stream;
• or
• storing, into the trace, second trace data into a second trace data stream that causes one or more alternative executable instructions, rather than the one or more second executable instructions of the entity, to be executed during subsequent replay of the execution of the entity using the second trace data stream.