If I recall, there is a bug in Monero were your XMR could be traced when you send monero within a short period of time. If I recall one should wait 2 hours or 10 blocks?
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Because some of wallets didn’t update, there’s still significantly less decoys that are 10 blocks old exactly. Sure it is enough, but you’ll statistically be way more exposed.
The decoy selection algorithm isn’t perfect though, and it also seems like it doesn’t choose enough recent outputs, so that means again you’re statistically more exposed if you spent from 10 to idk like 100 blocks old. Nothing that alarming though.
10 is enough for most cases, 11 is better if you want the extra privacy :)
If you really need the privacy, churn and/or wait at least a few hours.
