Researchers Rob Ragan and Oscar Salazar have built a free LiteCoin-mining botnet that generates $US1750 a week using free cloud signup promotions.
The pair will outline the exploit at Black Hat next month, but have blabbed to Wired about how they used automatic tools and processes to spread a currency-mining botnet across some 150 popular free services that each generated about 25 cents a day -- all on the providers' electricity bill.

LiteCoin became the pair's crypto-currency of choice because BitCoin is hard to generate without graphical processing units these days.

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