Is it safe to stake with Lido?

I'm considering staking with Lido, but I'm a bit concerned about the safety aspect. Could you please elaborate on the security measures taken by Lido to ensure the safety of staking? Are there any known vulnerabilities or hacks that have occurred in the past? Additionally, how does Lido handle smart contract audits and ensure the integrity of their staking platform? I'd also like to know if there are any insurance mechanisms in place to protect users' funds in case of any unexpected events. I'm trying to make an informed decision, so your insights would be greatly appreciated.