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The Register of Known Spam Operations
Chen Yu (AKA Sprincy)

Evidence Menu:

Chen Yu (AKA Sprincy) Index

Country: China
State: Jiangsu
Changshu-based Chen Yu (陈宇) mostly sends digital image retouching and refinishing ("Photo Retouching Services", "Video Editing", etc) spam, but "Application Development" and Textile products spam have also been observed, and some mailings directly advertise spamming services.

Before July 2014 (and since at least Spring 2010) he operated without Internet assets of his own except dropboxes, relying on throwaway webmail accounts, open proxies and open relay sending sources. He hijacked several thousand servers all over the world to have his spam delivered, becoming one of the most serious problem on the Internet and inflicting massive costs to thousands of companies across the world.

After July 2014 he switched to a standard snowshoe distribution method and started to purchase low-cost VPSes from ISPs across the world.

Chen Yu (AKA Sprincy) SBL Listings History
Current SBL Listings
Archived SBL Listings

email addresses and throwaway domains

Some dropboxes observed in spams (message bodies and Reply-To headers):

Before October 2013 [Netease terminated all of them]:

After October 2013, until July 2014:

After July 2014:

Seen in domain registrations (before July 2014):

Seen in domain registrations for throwaway domains (used after July 2014):

Throwaways domains (used after July 2014):

Private addresses he uses for one-to-one correspondence:


The Register of Known Spam Operations (ROKSO) collates information and evidence on entities with a history of spamming or providing spam services, and entities affiliated or otherwise connected with them, for the purpose of assisting ISP Abuse Desks and Law Enforcement Agencies.
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