According to an update from Optus, 2.1 million of the 9.8 million current and past customers whose data was exposed had at least one portion of an identification document, such as a license or passport number, accessed. In addition to personal data such as name, address, and date of birth, a current and legitimate form of identification was compromised for around 1.2 million people.  For the remaining 900,000 users, the breach compromised an out-of-date ID. Optus stated that it has contacted all of the affected individuals and instructed them on the steps to take so as to minimize the damage done by this hack. Optus has also promised to reimburse victims the cost of passport replacement.   The company has encouraged the remaining 7.7 million consumers to be cautious. Even though their identification documents were not stolen, the breach disclosed information such as email addresses, birth dates and phone…