I don't think it's meant as a way of stopping the "Mallory closed with an old state and DDOSed my connection all over the world until her old-state channel-close reached timeout" attack, which is what you seem to be thinking The scenario I have in mind is the following: Many LN users will not be 24/7 online, but let's say a few hours per day, to be able to react to any malicious channel close. The attacker could speculate that at least a certain percentage of this "retail LN user group" could not use watchtowers or similar mechanisms, and thus wait for a moment in the week where the transaction fee level is relatively high (often Wednesday/Thursday) and close channels massively just before the predicted start of the "high fee cycle" in the early morning in Europe, which is often the moment with the lowest fees. all the lightning stuff is pretty new to me, please excuse me if what i am about to say is wrong - learning daily. i stumbled upon the watchtime-blocks setting in c-lightning here. setting this to the maximum of 2016 would mean, that users who are not 24/7 online, would need to be online once every two weeks, to check for a malicious channel close. which would make your proposed attack scenario more unlikely or harder to execute. this is possible now and should be possible with eltoo enabled, if i understand the setting correctly and what it is supposed to do. as i said - correct me if i am wrong here. nice discussion btw.
I don't think it's meant as a way of stopping the "Mallory closed with an old state and DDOSed my connection all over the world until her old-state channel-close reached timeout" attack, which is what you seem to be thinking The scenario I have in mind is the following: Many LN users will not be 24/7 online, but let's say a few hours per day, to be able to react to any malicious channel close. The attacker could speculate that at least a certain percentage of this "retail LN user group" could not use watchtowers or similar mechanisms, and thus wait for a moment in the week where the transaction fee level is relatively high (often Wednesday/Thursday) and close channels massively just before the predicted start of the "high fee cycle" in the early morning in Europe, which is often the moment with the lowest fees. all the lightning stuff is pretty new to me, please excuse me if what i am about to say is wrong - learning daily. i stumbled upon the watchtime-blocks setting in c-lightning here. setting this to the maximum of 2016 would mean, that users who are not 24/7 online, would need to be online once every two weeks, to check for a malicious channel close. which would make your proposed attack scenario more unlikely or harder to execute. this is possible now and should be possible with eltoo enabled, if i understand the setting correctly and what it is supposed to do. as i said - correct me if i am wrong here. nice discussion btw.

I don't think it's meant as a way of stopping the "Mallory closed with an old state and DDOSed my connection all over the world until her old-state channel-close reached timeout" attack, which is what you seem to be thinking The scenario I have in mind is the following: Many LN users will not be 24/7 online, but let's say a few hours per day, to be able to react to any malicious channel close. The attacker could speculate that at least a certain percentage of this "retail LN user group" could not use watchtowers or similar mechanisms, and thus wait for a moment in the week where the transaction fee level is relatively high (often Wednesday/Thursday) and close channels massively just before the predicted start of the "high fee cycle" in the early morning in Europe, which is often the moment with the lowest fees. all the lightning stuff is pretty new to me, please excuse me if what i am about to say is wrong - learning daily. i stumbled upon the watchtime-blocks setting in c-lightning here. setting this to the maximum of 2016 would mean, that users who are not 24/7 online, would need to be online once every two weeks, to check for a malicious channel close. which would make your proposed attack scenario more unlikely or harder to execute. this is possible now and should be possible with eltoo enabled, if i understand the setting correctly and what it is supposed to do. as i said - correct me if i am wrong here. nice discussion btw.

I don't think it's meant as a way of stopping the "Mallory closed with an old state and DDOSed my connection all over the world until her old-state channel-close reached timeout" attack, which is what you seem to be thinking The scenario I have in mind is the following: Many LN users will not be 24/7 online, but let's say a few hours per day, to be able to react to any malicious channel close. The attacker could speculate that at least a certain percentage of this "retail LN user group" could not use watchtowers or similar mechanisms, and thus wait for a moment in the week where the transaction fee level is relatively high (often Wednesday/Thursday) and close channels massively just before the predicted start of the "high fee cycle" in the early morning in Europe, which is often the moment with the lowest fees. all the lightning stuff is pretty new to me, please excuse me if what i am about to say is wrong - learning daily. i stumbled upon the watchtime-blocks setting in c-lightning here. setting this to the maximum of 2016 would mean, that users who are not 24/7 online, would need to be online once every two weeks, to check for a malicious channel close. which would make your proposed attack scenario more unlikely or harder to execute. this is possible now and should be possible with eltoo enabled, if i understand the setting correctly and what it is supposed to do. as i said - correct me if i am wrong here. nice discussion btw.