Creates a data protection policy for the specified log group. A data protection policy can help safeguard sensitive data that's ingested by the log group by auditing and masking the sensitive log data.
Sensitive data is detected and masked when it is ingested into the log group. When you set a data protection policy, log events ingested into the log group before that time are not masked. By default, when a user views a log event that includes masked data, the sensitive data is replaced by asterisks. A user who has the
logs:Unmask permission can use a
GetLogEvents or
FilterLogEvents operation with the
unmask parameter set to
true to view the unmasked log events. Users with the
logs:Unmask can also view unmasked data in the CloudWatch Logs console by running a CloudWatch Logs Insights query with the
unmask query command.
For more information, including a list of types of data that can be audited and masked, see
Protect sensitive log data with masking.
The
PutDataProtectionPolicy operation applies to only the specified log group. You can also use
PutAccountPolicy to create an account-level data protection policy that applies to all log groups in the account, including both existing log groups and log groups that are created level. If a log group has its own data protection policy and the account also has an account-level data protection policy, then the two policies are cumulative. Any sensitive term specified in either policy is masked.