: Attackers may use Man-in-the-Middle (MITM) attacks to intercept communication traffic between the PC and PLC to find the hidden key used in the authentication challenge-response.
: Read/Write restrictions. The user cannot upload or download blocks without authorization.
Fully prevents program uploading, protecting proprietary logic. The code on the PLC cannot be extracted, even with partial passwords. 2. Official Methods to Clear a Forgotten Password
If you can establish an Ethernet or serial connection to the PLC, use the software interface to clear the memory.