Which measure is least effective in preventing hacking?

Using outdated security practices is the least effective measure in preventing hacking because it suggests reliance on methods that may no longer adequately protect against current threats. Cybersecurity is a constantly evolving field, with hackers developing new techniques and exploiting vulnerabilities in older systems. Outdated practices may not address the latest cybersecurity challenges, exposing systems to significant risks.

In contrast, employing strong passwords, keeping software updated, and implementing firewalls are proactive strategies that enhance security. Strong passwords make it difficult for attackers to gain unauthorized access, regular software updates patch vulnerabilities that could be exploited, and firewalls act as a barrier that monitors and controls incoming and outgoing network traffic, reducing exposure to potential threats.