Investigated a collection of suspicious accounts and found last 30 days transactions between them as follows:

Suspicious Accounts

Group Number	Account Names	Suspicious Type
Suspicious #1	@robert31, @steem-ripon	Transactions (Confirmed)
Suspicious #2	@nomita, @sizuka	Transactions (Confirmed)
Suspicious #3	@perry1, @max1994, @rik432, @ratul8940, @rahul72	Transactions (Confirmed)
Suspicious #4	@smileplease, @saqqu, @letssmile	Transactions (Confirmed)
Suspicious #5	@ritue, @pariza, @suchi, @maicle, @quinnpeterson	Transactions (Confirmed)
Suspicious #6	@beforandafter, @askmee, @scoopian	Transactions (Under Investigation)
Suspicious #7	@depu, @trickbd, @steemoffice, @rasal, @opubd, @khaleck, @depubd, @bkash, @abulbd	Transactions (Confirmed)
Suspicious #8	@sthitaprajna, @crypto-wisdom, @shivohum2015, @pardeepkumar	Transactions (Under Investigation)

Edited on (24/01/2018)
Trustworthy Accounts

Group Number	Account Names	Trust Level
Trust #1	@serkagan, @magnata	100% (Confirmed)