Customers have legitimate reasons for using multiple brands in a category.

FORBES: The Wallet Allocation Rule and Your Brand

Just as consumers have legitimate reasons for buying multiple brands in the same category, when we are beginning our careers (or have other reasons why being number one is out of the question), we can brand ourselves in a way that our offer is unique enough to keep us in demand despite a general preference for something else.

FORBES: The Wallet Allocation Rule and Your Brand

However, signatures that are written to be general purpose and block based on a category of potential exploits against known vulnerabilities can cause false positives and thus block legitimate connections.

FORBES: How reputation services enhance IPS