"Wave of SIM swapping attacks hit US cryptocurrency users"

ZDNet:

These types of attacks have been going on for half a decade now, but they've exploded in 2017 and 2018 when attackers started focusing on attacking members of the cryptocurrency community, so they could gain access to online accounts used for managing large sums of Bitcoin, Ethereum, and other cryptocurrencies.

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But despite a period of calm in the first half of the year, a rash of SIM swapping attacks have been reported in the second half of May, and especially over the past week.