ASAE
ASAP EXPO INC
stock OTC

There is a bit to unpack here. I really appreciate your questions and encourage you to post any others you have :)
`"access and use of the CS service"`
I think you may be confusing this phrase. The above phrase denotes how you would access your computershare account.
For example if you open computershare, type in your password, answer the MFA questions and then access is granted. Your "access" was making use of your password and MFA answers. This would be logged like the rest of the activity you preform on the CS service. The use of your CS service is you storing your stocks, checking your balance, buying more, moving from plan to book etc.

If you tried to brute force the password and MFA answer, then that is also how you accessed the CS service. If your running a vulnerability scanner from your CS account then that is how your using the CS service.
Both of the examples above produce logs that are archived and tracked. In the event of a cyber security incident that may involve your account (this can happen if many accounts are breached, if someone is doing recon work against your account to see how to get in, etc). CS would need to call in specialists to do investigations and report the breach and supporting evidence to several authorities. Those specailists need access to those logs to do their investigation.
This is from CS's website:
`We also commission several external audits to provide an independent assurance and attestation of our business and technology controls. These external audits include System and Organisation Controls (SOC), International Standard on Assurance Engagements (ISAE) 3402, Statement on Standards for Attestation Engagements (SSAE) 18, Australian Standard on Assurance Engagements (ASAE) 3150, and ISO 27001:2013 that are applicable to specific business units and geographic locations.`
I have gone through the certification process for most of the above certifications, SOC and ISO both have components about only sharing logs, PII and evidence from investigations with authorized third parties.
Given the certifications that CS currently holds
In regards to your password there is a **very good** chance the security team at computer share doesn't even know or have access to it (this is just good security practice).
Sorry for the wall of text, but does this answer your question?

There is a bit to unpack here. I really appreciate your questions and encourage you to post any others you have :)
`"access and use of the CS service"`
I think you may be confusing this phrase. The above phrase denotes how you would access your computershare account.
For example if you open computershare, type in your password, answer the MFA questions and then access is granted. Your "access" was making use of your password and MFA answers. This would be logged like the rest of the activity you preform on the CS service. The use of your CS service is you storing your stocks, checking your balance, buying more, moving from plan to book etc.

If you tried to brute force the password and MFA answer, then that is also how you accessed the CS service. If your running a vulnerability scanner from your CS account then that is how your using the CS service.
Both of the examples above produce logs that are archived and tracked. In the event of a cyber security incident that may involve your account (this can happen if many accounts are breached, if someone is doing recon work against your account to see how to get in, etc). CS would need to call in specialists to do investigations and report the breach and supporting evidence to several authorities. Those specailists need access to those logs to do their investigation.
This is from CS's website:
`We also commission several external audits to provide an independent assurance and attestation of our business and technology controls. These external audits include System and Organisation Controls (SOC), International Standard on Assurance Engagements (ISAE) 3402, Statement on Standards for Attestation Engagements (SSAE) 18, Australian Standard on Assurance Engagements (ASAE) 3150, and ISO 27001:2013 that are applicable to specific business units and geographic locations.`
I have gone through the certification process for most of the above certifications, SOC and ISO both have components about only sharing logs, PII and evidence from investigations with authorized third parties.
Given the certifications that CS currently holds
In regards to your password there is a **very good** chance the security team at computer share doesn't even know or have access to it (this is just good security practice).
Sorry for the wall of text, but does this answer your question?