MIAMI — Federal authorities in South Florida routinely confiscate millions of dollars in hard cash, high-rise condos and luxury cars when they convict criminals of drug trafficking, fraud or money laundering. But in a rare civil case — one of the biggest of its kind in the United States — prosecutors in Miami have seized $34 million in cryptocurrency. The bitcoin fortune was made by a Parkland resident suspected of using the internet to sell people’s account information that had been hacked from HBO, Netflix and Uber, among other popular services. Prosecutors with the U.S. Attorney’s Office sa…