Let's figure out who are suspicious accounts.
Suspicious accounts are Instagram bots, stolen accounts, abandoned accounts and people who use specific tools to artificially boost their accounts' followers, likes, and comments number.
It's ok to have some suspicious accounts among your followers. Some might have lost their credentials or got tired from social media. Others may be commercial accounts, such as small businesses or brands, as well as aspiring influencers who are actively trying to grow their audience, these accounts often use the follow/unfollow strategy to attract new followers, which can result in a high percentage of mass followers.
Your goal is to keep the level of suspicious accounts among your audience as low as possible.
Simply check the Audience Authenticity section in HypeAuditor report on a regular basis. This metric gives you a warning sign if the number of suspicious accounts is getting high or if you are doing just fine.