You are hired as a Database Administrator for Jennifer Shopping Cart Inc. You monitor the server health through the System Monitor and found that there is a sudden increase in the number of logins…

Injection attacks (e.g., SQL injection) manipulate query logic through malformed input and would not cause a measurable spike in the number of login connections to the server.

A virus is malicious code that attaches to files and executes when triggered; it does not generate large volumes of login requests to a database server.

A worm self-replicates across networks but its activity pattern typically appears as unusual network traffic or process activity, not as a surge in database login attempts.

A Denial-of-Service attack works by overwhelming a target server with excessive requests, which can manifest as a sudden spike in login attempts detected via System Monitor. This flood of connections consumes server resources such as connection pools, CPU, and memory, degrading or denying service to legitimate users. The pattern of an abnormal, rapid increase in login count is a classic DoS indicator at the authentication layer.