LMW said it did not know how many people had accessed the data while it was available to the public gaze. The company said independent security consultants had confirmed that the data was accessed via an exposed programming interface on one of our valuation platforms.
The firm is currently in a market halt and it is not known when it will return to trading on the ASX. "As a result of this [the breach], on 14 February, we felt we needed to move into a market halt so we could get some clarity around what this incident means for our business," it said.
The company said that the leaked dataset contained:
- Approximately 137,500 unique valuation records, and approximately 1680 supporting documents.
- Approximately 250,000 individual records in total, but many were duplicates.
- The date range of the documents was between 4 January 2011 and 20 January 2019.
ANZ, Commonwealth Bank and NAB have acknowledged that data about their clients were included in the dataset that was leaked on the Web.
In Friday's update, LMW said: "On 10 January 2019, our team received an email from the Australian Cyber Security Centre alerting us to a vulnerability. At that point in time, LMW was in the process of undertaking pre-planned systems upgrade work on the valuation platform the subject of the incident.
"LMW also separately received a post from a user on our Twitter account at that time relating to data that we now know was publicly available on the dark web. Our Twitter account was not actively monitored over the holiday period, and we have only recently become aware of it.
"The full extent of the incident was not apparent to us at the time of any of these communications, and we were not aware that there had been a disclosure of data at this time.
"On 23 January, we closed off Internet access to the valuation platform the subject of the incident. We believe it was the closure of the access to the platform that prompted the disclosure of the dataset by the unknown third party."
LMW was founded in 1982 and listed on the Australian Stock Exchange in 2003. It employs 450 staff across the country and 99.7% of its shareholders are in Australia.