I remember (sorry can't give a proper quote) a biologist interviews about the fear of lab grown "super" seeds escaping the lab. They chuckled basically saying that nature is a very VERY challenging place. There are plenty of ecological niches but they are well guarded by incumbents.
Sure some new hacks will take place, including on poorly guarded infrastructure and yes it will have some very unfortunate consequences... but also infrastructure is precisely designed to be resilient. There is quite a bit of failsafe, redundancy, etc built in which is precisely why those projects are typically slow and expensive, unlike a random website for a restaurant.
TL;DR: nope, some isolated incidents will happen but without chain reactions.
Sure some new hacks will take place, including on poorly guarded infrastructure and yes it will have some very unfortunate consequences... but also infrastructure is precisely designed to be resilient. There is quite a bit of failsafe, redundancy, etc built in which is precisely why those projects are typically slow and expensive, unlike a random website for a restaurant.
TL;DR: nope, some isolated incidents will happen but without chain reactions.