The security organization
Shadowserver found out in a portscan of all possible 4.3 billion IPv4 addresses in June 2020 that about 80,000 unsecured printers can be addressed via Internet Printing Protocol (IPP) support.
IPP allows attackers to obtain a range of information from openly communicating printers over the Internet, including the firmware version, standard, and WLAN SSID.
Based on the information obtained, hackers can exploit possible security gaps (exploits) and thus use the printers as a gateway into company networks. The command IPP Get-Printer Attributes on TCP port 631 was used for the port scan. According to
Speedguide...
