What's the mean of the initial announcement, is it some kind of warning message pinned on to the top?
If that's what you mean, then basically these people already know what consequences they need to consider when getting involved in the crypto industry. Something that appears legitimate can be compromised and hacked, so the community should be able to consider the consequences from the start.
Pin it on top of the landing page can be annoying with many users but I agree with some newbies. Why only some newbies, because many newbies will not read it like they don't read Terms of Services, Guidelines for users.
I have another idea. The team can write a short guide article on this security issue, and add it to their blog page that can be categorized to different topics like Security and others.
That's why all users are advised to store their crypto assets in a secure wallet offline. They should not mix up using the same device for work and storing their assets, so purchasing a hardware wallet or other wallet that is declared safe is a priority they should consider.
They simply don't have enough knowledge to differentiate between good and bad wallets because they have never been taught or exposed to such education resources on Bitcoin and cryptocurrency wallets. Some were educated but they ignored good advice and decided to prioritize convenience with online wallets from online platforms, centralized exchanges rather than secure their assets in non custodial wallets by themselves.
Hardware wallets are good but must note that good hardware wallets must be open source.
[List] Open Source Hardware Wallets[GUIDE] How to buy a Hardware Wallet the right wayChoose a good hardware wallet is a first step, then buy it with right way, and very last step is back up your wallet properly.
How to back up a seed phrase