1. https://btcmanager.com/quadriga-cx-ceo-spent-user-funds-margin-trades/?q=/quadriga-cx-ceo-spent-user-funds-margin-trades/&
2. https://cointelegraph.com/news/cme-open-interest-in-bitcoin-futures-contracts-hit-all-time-high
3. https://btcmanager.com/litecoin-foundation-launch-crypto-debit-card-partnership/
4. https://www.newsbtc.com/2019/06/19/pwc-crypto-auditing/
5. https://cointelegraph.com/news/major-korean-crypto-exchange-bithumb-prosecuted-for-failure-to-protect-user-data