Singtel has completed initial investigations into a recent breach on a third-party file sharing system and has begun reaching out to affected stakeholders.
Based on investigations and analysis conducted so far with the help of cyber security experts, the company has established which files on the Accellion FTA system were accessed illegally during the breach and which stakeholders have been impacted.
The data taken includes consumer information containing varying combinations of personally identifiable information. 23 enterprises have also been impacted. These include suppliers, partners and corporate customers. A large part of the leaked data includes Singtel’s internal information that is non-sensitive such as data logs, test data, reports and emails.
Singtel has begun notifying all affected individuals and enterprises to help them and their staff manage the possible risks involved and take appropriate follow-up action.
“While this data theft was committed by unknown parties, I’m very sorry this has happened to our customers and apologise unreservedly to everyone impacted. Data privacy is paramount, we have disappointed our stakeholders and not met the standards we have set for ourselves,” said Singtel’s Group CEO Yuen Kuan Moon. “Given the complexity and sensitivity of our investigations, we are being as transparent as possible and providing information that is accurate to the best of our knowledge. We are doing our level best to keep our customers supported in mitigating the potential risks.”
Yuen added, “I’d like to thank our customers and partners for their patience and understanding as we continue our cyber and criminal investigations to understand the full extent of this breach. I want to emphasise that our core operations and functions remain unaffected and sound and this incident involves a standalone system provided by a third-party vendor. Information security remains our highest priority and you have my commitment that we are conducting a thorough review of our systems and processes to strengthen them.”
|Exfiltrated data established to date:|
|Personally Identifiable Information of approximately 129,000 customers containing NRIC and some combination of the following information: name, date of birth, mobile number, address|
|Bank account details of 28 former Singtel employees|
|Credit card details of 45 staff of a corporate customer with Singtel mobile lines|
|Some information from 23 enterprises|
Singtel is moving with urgency to reach out to all affected individual and corporate customers to keep them supported on how best to manage the variable risks involved. We are also appointing a global data and information service provider, to provide identity monitoring services at no cost to affected customers to help them manage potential risks. This service monitors public websites and non-public places on the internet, and notifies users of any unusual activity related to their personal information. As we progressively contact impacted customers, those concerned can refer to singtel.com/accellion-incident for more information.
Accellion FTA which Singtel used as a third-party file sharing system was the target of a sophisticated cyber attack exploiting a previously unknown vulnerability.
When first alerted to exploits against the system last December, Singtel promptly applied a series of patches provided by Accellion to plug the vulnerability, the last patch being 27 December. On 23 January this year, Accellion advised that a new vulnerability had emerged that rendered patches previously applied in December ineffective.
Singtel immediately took the system offline. On 30 January, Singtel’s attempt to patch the new vulnerability in the FTA system triggered an anomaly alert. Accellion informed thereafter that the system could have been breached. Singtel’s investigations later confirmed this and identified 20 January as the date the breach occurred.
The FTA system has been kept offline since 23 January. On 9 February, Singtel established that files were taken as a result of the breach and informed the public two days later on 11 February.