Which of the following is a common way for attackers to gain unauthorized access?

Using weak or reused passwords is a significant vulnerability that attackers often exploit to gain unauthorized access to systems. Passwords serve as the first line of defense against unauthorized access, and if users select simple or easily guessable passwords, or reuse the same credentials across multiple sites, they create a weak point that attackers can capitalize on.

For instance, if a password for a less secure site is compromised, the attacker may try the same password on more sensitive accounts, like email or banking, often leading to a successful breach. This technique is known as credential stuffing, where attackers utilize stolen username and password combinations to gain access to various accounts.

In contrast, installing software updates, employing strong firewall protection, and engaging in regular security audits are all proactive measures designed to enhance security rather than avenues for attackers to exploit. Keeping software up to date helps patch vulnerabilities, firewalls act as barriers to unauthorized access, and security audits help identify and mitigate potential risks before they can be exploited. Therefore, understanding the significance of strong password management is crucial for safeguarding systems against unauthorized access.