(Bloomberg) -- Global hackers have unleashed a brace of attacks in recent months, but while their haul in bitcoin has been paltry, the revenue hit to companies infected is reaching into the hundreds of millions of dollars.
The WannaCry ransomware that spread in May featured a flawed design that led to its prompt shutdown, and June’s computer virus called Petya was designed to wipe data rather than collect money. The two attacks netted the attackers around $140,000, according to analysis of their bitcoin wallets.
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