It comes as parts of NSW remain flood-struck and evacuation orders have been issued for areas in the Riverina including the town of Deniliquin.

The ACT Emergency Services Agency sent a text message at 11.03am warning of danger and flash flooding along Ginninderra Creek, between Kingsford Smith Drive and Florey Drive, Macgregor.

"The message was intended to be sent in a training environment. Community members can be assured that flooding is not occurring in Ginninderra Creek at this time," an ESA spokesperson said on Monday.

A spokesperson said the message had been accidentally sent while staff were undergoing annual refresher training on emergency alerts.

Last week 75,000 people received a notification through the ACT Digital Health Record related to historical test results. Health authorities say fewer than five people received alerts for upcoming appointments that were not theirs.

The digital health record, which went live on Saturday collated all paper and digital records in the territory's public health system.

It comes amongst heightened awareness of the use of technology after recent Optus and Medibank hacks. The Russian cybercriminals behind the Medibank hack released more stolen data and personal information this week after the company refused to pay a $15 million ransom to get it back.

Meanwhile, the Bureau of Meteorology issued a severe weather warning for damaging winds across the ACT and much of Southern NSW.

Winds of up to 90km/h are forecast for Monday with gusts of 96km/h recorded at Thredbo at around 1am. Winds are expected to ease later in the evening but the risk in Alpine areas above 1900m will remain overnight.

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There is a chance of thunderstorms and small hail for Canberra on Monday evening and temperatures are expected to hit a top of just 13 degrees.

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