they ring you and say that your IP address is flooding telstra servers.
Then the usual BS to get you to go to their website and run some ransomware to get you to pay money to unlock it.
Stupid morons...
here is where they try to send you...
start, run
wwx.telstracare.weebly.com
(wwx deliberate error so noone runs the link here)
Don't get sucked in.....