Which of the following is a sign of a potential data breach?

Unusual accounts access or login attempts is a recognized indicator of potential data breaches. This could involve numerous failed login attempts, logins from unfamiliar locations, or accounts being accessed at strange hours. Such anomalies can point to unauthorized access or attempted breaches, suggesting that an attacker may be trying to exploit vulnerabilities to gain unauthorized access to sensitive information.

In contrast, increased website traffic might stem from various legitimate sources such as marketing campaigns or seasonal interest, and it does not inherently indicate a data breach. Reports of system updates typically reflect routine maintenance and security improvements, which are standard practices to enhance system protection and are not signs of a breach. Employee compliance with security protocols generally suggests that security measures are being followed, thereby reducing the likelihood of a breach rather than indicating one.