Cable modems are less secure than DSL connections because cable modems are shared with other subscribers?

The premise that the shared medium of cable modems inherently makes them less secure than DSL connections is largely outdated due to advances in network security and isolation technologies like DOCSIS.

Modern cable modem technologies, such as DOCSIS, implement robust encryption and traffic isolation features that effectively segment each subscriber's data, preventing direct eavesdropping by other users on the same segment. Therefore, the shared medium itself no longer inherently makes cable modems less secure than DSL connections, which also rely on secure protocols.