A few days ago @cryptobitcoins wrote a wonderful article on Steemit but when he came to introduce himself here at Hive, the poor guy forgot his writing skills and grammar:
https://steemit.com/hive-141434/@cryptobitcoins/burnsteem25-or-or-steemit-engagement-challenge-s4-w3-three-goals-that-i-met-and-three-that-i-want-to-achieve-by-cryptobitcoins

But five days ago he was caught posting a plagiarized article on Steem and later deleted it:
https://steemit.com/hive-109435/@cryptobitcoins/what-is-blockchain-by-cryptobitcoins

@drtipu is a confirmed scammer on steemit using multiple accounts to fool the community. They have hired a team to write articles for them. They have defrauded an estimated 200k Steem to date. You can check more details here:
https://steemit.com/hive-195150/@sharp-eyed/ri6ijp

Now they are expanding their network on the Hive blockchain to fool the Hive community. Their team leader @mohammadfaisal is running another account on Hive with a different name. Some of their team members are already verified here but soon we will knock out all their accounts. They think the hive community is also the same as steemit where a team like Steemcurator01 sits and they don't care about cheaters.

I have caught 4 of their accounts which are here:
1- @iffatilyas/eye-to-eye-your-eye
2- @allahnawaz03/posts
3- @alihussain077/how-my-schedule-is-disturb
4- @drhive75/volunteering-is-a-happiness-for