undercover sting

Q&A: FBI agent looks back on time posing as a cybercriminal

In September 2008 police began arresting alleged members of Dark Market, an underground Internet forum for buying and selling credit card data used for identity fraud. The sting wouldn't have been possible without the work of FBI agent J. Keith Mularski who spent two years infiltrating the group.

Mularski became hacker "Master Splynter," a play on the name of the Teenage Mutant Ninja Turtle character called "Master Splinter," a rat who lives in New York City's sewers. He was so successful in his online disguise that he ended up running the server that hosted … Read more