2rlp Posted December 1, 2023 Report Share Posted December 1, 2023 https://www.bleepingcomputer.com/news/security/hackers-breach-us-water-facility-via-exposed-unitronics-plcs/ Is this true? and how does one avoid this Ron Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted December 1, 2023 MVP 2023 Report Share Posted December 1, 2023 It's totally true. You avoid it by not connecting your PLC to the Internet via port forwarding port 20256 on your router. Connect to the PLC via a VPN. Joe T. 1 Link to comment Share on other sites More sharing options...
2rlp Posted December 1, 2023 Author Report Share Posted December 1, 2023 Thankyou Joe 1 Link to comment Share on other sites More sharing options...
kvlada Posted February 28 Report Share Posted February 28 Unitronics published a software update for Vision PLCs, which requires you to set an alphanumeric password to access PLC via PCOM protocol for online and programming mode. When upgraded, only those with the password will be able to access the PLC and download new program. Password can be set via ladder, or via HMI, so operators in field can change passwords on their own per company policy. Link to comment Share on other sites More sharing options...
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