Hackers are very much active to cheat the bounty hunters / ICOs . Millions of fake twitter accounts have been infiltrated. All efforts being done by hackers to spam the official twitter accounts of crypto business and impersonating crypto personalities. More than 15000 exclusive hacker's accounts were traced by the agency involved in research.
Following is the link based on study and research by "Duo Security". They took help of Application programming Interface to catch hackers from 88 million twitter accounts.
https://cryptoslate.com/massive-cryptocurrency-botnet-scam-unearthed-on-twitter/As time goes by, these hackers will actually start to increase. What actually is scary that the number of botnet/hackers account found was just the once that are pure bot. Hybrid accounts that are half run by humans have been excluded. Hybrid accounts are more harder to spot and seems more legitimate. Sadly, new users will fall for their scams as they always hunt for giveaways which are the prime method for the hackers to hack the new users.