They weren't false positives. False positives are when WildFire gives a Benign file a Malicious verdict.
In this case, WildFire gave the files a Benign verdict, but they were triggering Antivirus signatures. We call these Signature Collisions. These happen when the digital patterns that the firewall looks at to identify a file, concide between a Benign sample and an Antivirus signature that has been generated from a Malicious sample that is similar in structure to the Benign file.
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