# Weekly Tech Update #27

This week's featured links:

-  [Twitter CTO Parag Agrawal will replace Jack Dorsey as CEO](https://www.cnbc.com/amp/2021/11/29/twitter-ceo-jack-dorsey-is-expected-to-step-down-sources-say.html)
-  [Introduction AWS Private 5G](https://youtu.be/2tGMop1ncTk)
-  [The Virtual Phone Farms Scammers Use to Set Up Fake Accounts](https://www.vice.com/en/article/dyppxm/buy-virtual-phone-number-5sim-fake-accounts)
-  [Really stupid “smart contract” bug let hackers steal $31 million in digital coin](https://arstechnica.com/information-technology/2021/12/hackers-drain-31-million-from-cryptocurrency-service-monox-finance)