Definition
A false positive occurs when a security system incorrectly identifies a legitimate activity or file as malicious. This means that an alert is triggered, or an action is taken, based on a mistaken assessment of threat. In practice, security tools flag benign items, leading to unnecessary investigations or blocked legitimate processes. False positives are important because they can waste valuable security team resources and desensitize personnel to real threats. For instance, an antivirus program might flag a common software update as malware, preventing users from installing critical patches. This differs from a false negative, where a real threat is missed entirely. Understanding false positives is crucial for exams like CompTIA Security+ and CySA+.